NEW RECORDS AND SUPPLEMENTARY INFORMATION ON THE GEOGRAPHIC DISTRIBUTION OF AUCHENORRHYNCHA (Hemiptera) IN SLOVENIA Gabrijel SELJAK Kromberška cesta 8, 5000 Nova Gorica, Slovenija e-mail: gabrijel.seljak@gmail.com Abstract: Sixteen leaf- and plantleafhopper species are recorded for the first time for the fauna of Slovenia: Anoscopus alpinus, Batracomorphus irroratus, Calligypona reyi, Chloriona glaucescens, Cixidia lapponica, Dictyophara multireticulata, Doratura butzele, Eupteryx immaculatifrons, Eurhadina saageri, Kybos calyculus, Nesoclutha erythrocephala, Oncopsis tristis, Praganus krkinus, Tamaricella ribauti, Tettigometra atra and Ziczacella heptapotamica. Biological associations and distributional ranges of a total of thirty-two species including new records for Slovenia are briefly discussed. The female of the species Praganus krkinus is described for the first time here. First occurrence of Ziczacella heptapotamica in Slovenia, as well as in Europe outside Russia and Ukraine is recorded. With these additions, the number of plant- and leafhoppers recorded for Slovenia has risen to 574 species. A study is under way to clarify the identity of the taxa Arboridia adanae, A. dalmatina, and A. vitisuga, which are recorded as occasional pests of grapevines in the eastern Mediterranean area. KEy Wo Rd S: Hemiptera, Auchenorrhyncha, fauna, new records, Slovenia Izvleček: Nove najdbe in dopolnila h geografski razširjenosti škržatkov (He- miptera, Auchenorrhyncha) v Sloveniji o bravnavanih je šestnajst vrst škržatkov, ki so novi za favno Slovenije. Anoscopus alpinus, Batracomorphus irroratus, Calligypona reyi, Chloriona glaucescens, Cixidia lapponica, Dictyophara multireticulata, Doratura butzele, Eupteryx immaculatifrons, Eurhadina saageri, Kybos calyculus, Nesoclutha erythrocephala, Oncopsis tristis, Praganus krkinus, Tamaricella ribauti, Tettigometra atra in Ziczacella heptapotamica. Na kratko so obravnavane biološke značilnosti in razširjenost dvaintrideset novih, manj znanih ali redkih vrst škržatkov v favni Slovenije. Prvič je opisana samica vrste Praganus krkinus, ki do sedaj ni bila poznana. Prvič je zabeleženo pojavljanje vrste Ziczacella heptapotamica v Sloveniji, kot tudi v Evropi izven Rusije in Ukrajine. S tem prispevkom se je število škržatkov v favni Slovenije povzpelo na 574 vrst. V 133 ACTA ENTOMOLOGICA SLOVENICA LJUBLJANA, DECEMBER 2023 Vol. 31, øt. 2: 133–162 teku je raziskava preverjanja identitete taksonov Arboridia adanae, A. dalmatina in A. vitisuga, ki se pojavljajo kot občasni škodljivci vinske trte na območju vzhodnega Sredozemlja. Kl jUč NE BESEd E: Hemiptera, Auchenorrhyncha, favna, nove najdbe, Slovenija Introduction The discovery of an animal species new to a well-explored area is a remarkable enough event. This statement also holds true to a large extent for the plant- and leafhoppers of Slovenia, especially for its western part (Ho l z iNGER & SEl jAK, 2001, SEl jAK, 2004, 2016, 2017, 2018). Nevertheless, the amazing geographical, orographic, geological, climatic, and vegetation diversity of this area continues to surprise with unpredictable discoveries. Species new to the fauna of Slovenia, as well as some rare and little-recorded ones, are presented and briefly discussed below. Material and methods Three main collecting methods were used to provide specimens for subsequent laboratory examination: sweep-netting, suction sampling with a leaf blower (McCulloc MAC GBV 345) and light-trapping. Exceptionally, specimens were also obtained from yellow sticky traps (y ST) set up for monitoring different phytoplasma vectors. Voucher specimens were card-mounted and are included in the author’s private col- lection [GSPC]. Concerning taxonomy and nomenclature, Mü Hl ETHAl ER & al. (2018) are followed. For each sampling site, the topographic name, the UTM-grid (MGRS ) code, and the collecting date are given. Where specimens have been provided by col- lectors other than the author, their name is indicated. Species new to the fauna of Slovenia are indicated with an asterisk (*). Results FUl Go Ro Mo RPHA Evans, 1946 Achilidae *Cixidia lapponica (Zetterstedt, 1828) [Figures 1 and 2] Material examined: Bač, 650 m (Vl 45), 24.8.2023 [GSPC, 3 ♂♂; B. z adravec leg., light-trapped]; Trnovski gozd (Krnica), 970 m (Vl 08), 12.8.2020 [1 ♂, light- trapped; photo j . Kamin in TRil AR & al., 2023; ]. An Eurosibirian species, widely but scattered distributed in Northern Europe and northeastern Asia. Rarely it has been recorded in Central European countries. isolated occurrences have been recorded in Slovakia, Germany, Austria, Romania, and Moldova (d l ABo l A, 1976; NiCKEl , 2010; Ho l z iNGER & FRiESS, 2014; ASCHE, 2015). it is con- sidered a boreoalpine (d l ABo l A, 1987b) or boreomontane species (Ho l z iNGER, 2009). Therefore, the occurrence of this species in Slovenia seemed less plausible. However, the often very cold winters and the extensive coniferous forests throughout the d inaric Mountains, provide suitable climatic and environmental conditions for its survival. The relatively low altitude (650 m and 970 m) of the two known localities is also sig- Acta entomologica slovenica, 31 (2), 2023 134 nificant, as it confirms the boreomontane distribution of C. lapponica in Central Eu- rope. The second locality in Trnovski gozd is not documented with a voucher specimen, but only with two photographs (TRil AR & al., 2023). The habitat in which the photos were taken (montane coniferous forest; j. Kamin, pers. comm.) clearly indicates C. lapponica. The preimaginal stages live under the bark of decaying conifers in associ- ation with wood decaying fungi. They develop one generation per year. The adults appear from july to September with a peak in August (ASCHE, 2015). in Slovenia, there is currently much more faunistic data on Cixidia pilatoi d ’Urso & Guglielmino, 1995 (SEl jAK, 2016). it inhabits warm habitats, mostly lowland white oak forests (Quercus pubescens l .) and their edges. The currently known distribution of the two species is shown in Figure 3. UV light traps have proven to be a very efficient tool for detecting and monitoring Cixidia species. To date, 44% of our faunistic data for this genus have been obtained using this method. Males were captured more frequently than females. This could be an indicator of the greater mobility of males. d elphacidae l each, 1865 *Calligypona reyi (Fieber, 1866) Material examined: d ragonja, 25 m (Ul 93), 31.8.2017 [GSPC, 1 ♀]. A trans-Palaearctic species with its distribution centre in Europe. in Slovenia, this species is only known from a single macropterous female captured with a light trap about two kilometres from the Adriatic Sea shore. its host plants are Schoenoplectus tabernaemontani (Gmel.) Palla and S. lacustris (l .) Palla (NiCKEl , 2003). S. lacustris is widely spread in permanently flooded sites near slow-running fresh water throughout the country, while S. tabernaemontani commonly occurs only in the Adriatic coastal area (j o GAN & al., 2001). Further findings of this leafhopper species are expected since its habitats have been little explored so far. *Chloriona glaucescens Fieber, 1866 Material examined: Koper (Vl 04), 15.5.2008 [GSPC, 1 ♂, 1 ♀]; l azaret (Vl 04), 3.7.2017 [GSPC, 1 ♂]; Škocjanski zatok (Vl 04), 27.4.2008 [GSPC, 4 ♂♂, 5 ♀♀]. Monophagous on Phragmites australis (Cav.) Trin. ex Steud.. in Slovenia, this species is confined to salt marshes along the Adriatic coast, but even there, it is rather rare. in these habitats, it occurs sympatric with the much more common C. sicula Matsumura, 1910. The latter is not strictly bound to saline habitats and occurs inland in freshwater marshes as well. d ictyopharidae Spinola, 1839 *Dictyophara (Dictyophara) multireticulata Mulsant & Rey, 1855 [Figure 13] Material examined: Rakitovec, 480 m (Vl 13), 13.9.2022 [GSPC, 1 ♂]; This is a Mediterranean species distributed from Portugal to South Russia, radiating into the Pannonian plain. o n the territory of Slovenia, this species was confirmed only very recently, although expected. Specifically, THEN (1886) and GRä FFE (1903) reported it from the nearest vicinity around Trieste in italy, and i collected it in some Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 135 localities on the Croatian side of istria. Adults were mainly swept from canopies of Quercus pubescens Willd. on hot sunny slopes. Apparently, this species is much rarer than D. europaea. issidae Spinola, 1839 Issus muscaeformis (Schrank, 1781) Material examined: Blatnik pri č rmošnjicah, 500 m (Wl 15), 1.6.2007 [GSPC, 1 ♀]; Kalce (Vl 38), 15.5.2012 [GSPC, 1 ♂]; l ekmarje, 390 m (WM31), 26.6.2023 [y ST, 1 ♂]; l itmerk, 310 m (WM84), 27.6.2023 [y ST, 1 ♂]; Pared (Kačiče), 450 m (Vl 25), 19.5.2018 [GSPC, 1 ♀]; Vetrnik, 700 m (WM40), 17.6.2006 [GSPC, 1 ♀]; Žejna dolina, 580 m (Vl 39), 23.6.2018 [GSPC, 1 ♂]. o ther records: Kasaze (WM11), 16.5.2020 and Mrzlica (WM01), 26.5.2018; Photo d . janević http://www1.pms-lj.si/animalia/load.php?species=5950 A rather rare species in Slovenia was collected mainly in the continental part. in the western part, it has been only found in one locality, despite the area being well explored. Adults appear from May to the end of july. Tettigometridae Germar, 1821 *Tettigometra (Tettigometra) atra Hagenbach, 1825 Material examined: Koritnice, 760 m (Vl 45), 13.9.2023 [GSPC, 1 ♀] The specimen was swept from the grass layer of an extensively grazed xerothermic pasture on limestone. Tettigometra (Tettigometra) fusca Fieber, 1865 New record: Unec (Vl 47), 31.8.2008 [GSPC, 1 ♂]. Previously, this species was recorded from the surrounding of Tolmin and Škofja l oka (GRä FFE, 1903; KiAUTA, 1962). However, no respective voucher material for these records is available. Therefore, the specimen mentioned above is the only doc- umented material for Slovenia. Tettigometra species are becoming very rare throughout Europe, and many popu- lations have vanished in recent decades, which is partly due to their complex life history associated with ants but especially due to the vanishing of suitable habitats (NiCKEl , 2003). Many of them are therefore threatened with extinction. The two species, T. atra and T. fusca prefer dry low productive grassland on neutral to basic substrates. CiCAd o Mo RPHA Evans, 1946 Aphrophoridae Amyot & Serville, 1843 *Neophilaenus infumatus (Haupt, 1917) Material examined: Sebeborci (WM97), 22.7.2003 [GSPC, 2 ♂♂ and 1 ♀]. in Slovenia, this species is reliably confirmed only from the above locality. Spec- imens from the N. exclamationis s.l. complex collected and studied thus far in the area of the d inaric Mountains and the julian Alps belong to either N. exclamationis (Thunberg, 1782) or N. limpidus Wagner, 1935. There has been very little material Acta entomologica slovenica, 31 (2), 2023 136 collected and studied thus far, so any conclusions concerning the distribution of these species in Slovenia are highly speculative. The occurrence of N. limpidus, an endemic species of the southern Alps and the d inarides, additionally complicates discrimination between these species. The existing descriptions of N. limpidus in the literature are all based on the type series of W. Wagner from Mt. Nanos (WAGNER, 1935; WAGNER, 1955; Ho l z iNGER & al., 2003). The intraspecific variability (body size, surface coloura- tion, aedeagus shape) of N. limpidus has not been sufficiently studied and remains somewhat enigmatic. Specimens collected by me on Mt. Snežnik in july 2017 show a considerable range of variability in colour patterns, which in some darker male specimens may come quite close to those of N. exclamationis. Further collections and comparative examination of specimens from the wider d inaric area and the south-eastern Alps will be needed for a better understanding of the species delimitation of the N. exclamationis complex in the territory of Slovenia. Cicadellidae l atreille, 1825 Aphrodinae Haupt, 1927 Anoscopus alpinus (Wagner, 1955) [Figures 17 and 18] New records: Mangart, 2050 m (UM94), 3.7.2018 [GSPC, 39 ♂♂, 14 ♀♀, 1 nymph]; Rogla, 1490 m (WM24), 20.7.2021 [GSPC, 1 ♂]. Previously, this species has only been recorded from Peca (VM85) (SEl jAK, 2016). in early july 2018, an unusually large population was observed on an alpine meadow on Mangartsko sedlo at 2050 m. With suction sampling, several dozens of specimens were collected from the grass turfs. The taxonomic validity and position of A. alpinus in relation to A. assimilis (Sig- noret, 1879 and A duffieldi (l e Quesne, 1964) remain a matter of discussion. GUGl iEl MiNo and Bü CKl E (2015) consider A. alpinus to be a separate species after reviewing material from various parts of Europe. This species mainly populates mountain grasslands in the upper montane and subalpine belt. it has been recorded from several parts of the Alps and Central European mountains (Mü Hl ETHAl ER et al., 2016; Mü Hl ETHAl ER et al., 2018, Gę BiCKi et al., 2013). Here, i follow the argumen- tation by Guglielmino and Bückle (2015), taking into consideration the morphological traits of the specimens being examined, the geographical position of Slovenia, and the fact that all existing material was gathered in the upper montane and subalpine belt above 1500 m. d eltocephalinae Fieber, 1869 Colladonus torneellus (Zetterstedt, 1828) [Figure 16] Material examined: l abinje, 700 m (VM21), 13.4.2019 [GSPC, 1 ♂]. Previously, this species had only been recorded from the Trenta Valley (SCHü RRER & l ö CKER, 2003: 78); this new locality is only the second in Slovenia. The studied specimen was swept from the undergrowth vegetation in a coniferous forest on lime- stone. The distribution range of this species extends throughout the Palaearctic and Alaska (d MiTRiEV & al., 2023). in Central and South Europe, it is rare everywhere. More commonly, it occurs in Scandinavia and northern Russia (o SSiANNil SSo N, Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 137 1983). it lives in shrubby undergrowth of mixed and coniferous forests, but its life history is still poorly understood (NiCKEl , 2003). *Doratura butzele Guglielmino & Bückle, 2021 [ Figures 4 - 6] Material examined: Miren (Ul 98), 30.6.2017 [GSPC, 1 ♂, 1 ♀], 11.7.2017 [GSPC, 2 ♂♂, 1 ♀] and 21.8.2017 [GSPC, 4 ♂♂, 3 ♀♀]; l oke (Ul 99), 24.8.2017 [GSPC, 3 ♂♂, 1 ♀]; Bilje (Ul 98), 6.9.2017 [GSPC, 20 ♂♂, 15 ♀♀]; Vipava (Mlake), 120 m (Vl 17), 1.6.2018 [GSPC, 2 ♀♀]. This is a very recently described species with the circum-Adriatic distribution range. it has been recorded in italy (Veneto, Piedmont, Abruzzo, Molise, Apulia, Campania, Basilicata, Calabria and Sicily), Croatia (istria), Bosnia and Herzegovina, Montenegro, and conceivably Slovenia (GUGl iEl MiNo & Bü CKl E, 2021; Bü CKl E & GUGl iEl MiNo , 2022). This ambiguous record for Slovenia refers to GRä FFE (1903, sub D. paludosa), who recorded it in the area around Tolmin. As the type locality for D. paludosa (Monfalcone, italy) is not far from this one, it is possible that this citation refers to either D. plaudosa or D. butzele. Gräffe’s citation of D. paludosa certainly merits verification since this species has not been confirmed in Slovenia thus far. The first specimens of D. butzele in Slovenia were collected in an abandoned gravel pit between Vrtojba and Miren in early summer 2017. The number of specimens was rather modest in this locality. l ater in September of the same year, a larger number (35 specimens) was obtained by suction sampling in an abandoned vineyard in Bilje about a kilometre further east. The species was identified as D. veneta d labola, 1959 at that time, with which collected specimens shared most characteristics. The most recent monographic study of the genus Doratura of the Palaearctic region showed, however, that the type material of D. veneta matches that of D. paludosa Melichar, 1897; thus, the name became a younger synonym for it (Bü CKl E & GUGl iEl MiNo , 2022). D. butzele is closely related to D. paludosa, and they differ only in aedeagus structure, this being ‘stouter (in lateral view), with rather evenly curved ventral margin and proximally curved dorsal margin in D butzele. Spinules are present only in the central portion, with the apical sector remaining smooth and shiny. in D. paludosa the aedeagus is slender in lateral view, widened only in its central portion, the ventral margin is strongly curved in the middle, the dorsal margin proximally straight, curved in its distal portion. Spinules are present on the entire surface including the apical part, a short proximal sector only remains free of them’ (Bü CKl E & GUGl iEl MiNo , 2022: 34). in our cases, D. butzele populates ruderal habitats with short grasses, mainly Cynodon dactylon (l .) Pers. Adults were collected from early june to mid-july and from mid-August to mid-September. it appears to develop two generations per year, but reliable confirmation for that is lacking. Metalimnus formosus (Boheman, 1845) [Figures 19 and 20] Material examined: d olenje jezero, 550 m (Vl 56), 17.7.2017; ig, 290 m (Vl 69), 16.8.2018; l aze pri Gorenjem jezeru, 550 m (Vl 56), 17.7.2017 [GSPC, 15 ♂♂ and 5 ♀♀]; Muriša (XM24), 26.7.2004 [GSPC, 1 ♂ and 1 ♀]; Puščava, 240 m (Wl 18), 17.6.2006 [GSPC, 1 ♂]; Rakitna, 800 m (Vl 58), 12.9.2008 [GSPC, 1 ♂ and 1 ♀]; Acta entomologica slovenica, 31 (2), 2023 138 Škofljica, 290 m (Vl 69), 11.7.2018; Trebnje (Wl 08), 10.7.2004; Ulaka, 750 m (Vl 57), 17.7.2017; Velika Polana (XM05), 26.7.2004 [GSPC, 1 ♀]; Velike Bloke, 740 m (Vl 67), 17.7.2017; Volčje, 750 m (Vl 67), 16.8.2018 [GSPC, 1 ♂]. Metalimnus steini (Fieber, 1869) [sensu Anufriev & Emeljanov, 1988] Material examined: Ajševica (Ul 98), 8.9.2001 [GSPC, 1 ♀]; Bilje (Ul 98), 6.9.2017; d ombrava, 50 m (Ul 98), 8.8.2007 [GSPC, numerous]; Gradišče pri Vipavi, 115 m (Vl 17), 3.10.2018 [GSPC, 1 ♂]; Horjul (Vl 49), 19.9.2007; Hotedršica, 550 m (Vl 38), 26.8.2016; l andol, 530 m (Vl 37), 18.7.2016; l oke (Ul 98), 19.8.2004 [GSPC, 1 ♂ and 1 ♀]; l opata, 260 m (WM12), 28.9.2010; Maribor - Tezno (WM55), 16.9.2004 [GSPC, 1 ♂]; Nova Gorica (Ul 98), 17.7.1999 [GSPC, 2 ♂♂] and 18.6.2005 [GSPC, 7 ♂♂ and 5 ♀♀]; Prvačina (Ul 98), 10.6.2006 [GSPC, 2 ♂♂]; Spodnje Bukovo (VM11), 4.6.2017; Staro Selo, 240 m (UM82), 24.8.2016 [GSPC, numerous]; Stojnci (WM73), 31.7.2008; Vogrsko (Ul 98), 21.9.2014 [GSPC, 1 ♂ and 1 ♀]; Žejna dolina, 580 m (Vl 39), 26.8.2016. The taxonomic identity of M. steini remains unclear as the type specimens have not been re-examined and compared with other related taxa (NiCKEl , 2003). in Europe, it is currently interpreted according to ANUFRiEV & EMEl jANo V (1988). Accordingly, the older material in my collection also needed revision. it turned out that all earlier published records of M. formosus for Slovenia (Ho l z iNGER & SEl jAK, 2001) refer to M. steini. The record of M. formosus by Gräffe (1903) for Tolmin also remains ques- tionable as it cannot be verified. The current known distribution of both species in Slovenia is shown in Figure 20. . *Nesoclutha erythrocephala (Ferrari, 1882) [Figure 14] Material examined: Korada, 500 m (Ul 89), 14.9.2022, captured on light [GSPC, 1 ♂; B. z adravec leg.]; l azaret (Vl 04), 22.6.2023 [GSPC, 1 ♀; B. z adravec leg.]. This species has a wide circum-Mediterranean distribution. it is also recorded in the Caucasian region, iran, China, japan, and South Africa (z HANG & l U, 2011). From the closer vicinity of Slovenia, it was previously recorded from Croatian istria, specifically in Volosko (GRä FFE, 1903) and Antenal near Novi Grad (SEl jAK, 2016). Thus far, i have always swept this species from the grass Bothriochloa ischaemum (l .) Keng, mostly together with large numbers of Balclutha frontalis (Fieber, 1872). it is not certain whether it lives monophagously on this grass or not, but the known distribution pattern of N. erythrocephala matches the old-world distribution range of this grass well (Po Wo , 2022). *Praganus krkinus Dlabola, 1987 [Figures 8 – 12] Material examined: Rakitovec, 500 m (Vl 13), 31.5.2022 [GSPC: 9 ♂♂, 24 ♀♀]; 24.6.2022 [GSPC: 8 ♂♂, 16 ♀♀] and 13.9.2022 [3 ♂♂, 19 ♀♀]. Praganus d labola 1949 is a Palaearctic genus represented by only three species: P. hofferi (d labola 1947), P. admirabilis Mitjaev, 1975 and P. krkinus d labola 1987 (d MiTRiEV & al., 2023). P. hofferi has a wider distribution area in Central and Eastern Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 139 Europe, known to occur in Germany, the Czech Republic, Hungary, Moldova, Ukraine, and Kazakhstan, while P. admirabilis and P. krkinus are endemic with a limited dis- tribution range, the first only recorded from Kazakhstan (MiTjAEV, 1975) and the second from Croatia (d l ABo l A, 1987a). The speciation of them may have happened by the area fragmentation of their common ancestor during the last glaciations. P. krkinus is the result of a long-lasting population isolation kept by the mountains of the d inaric ridge. To date, P. krkinus has only been recorded from the type locality in Baška on the island Krk in Croatia (d l ABo l A, 1987a). This new finding in southwestern Slovenia is the second one and considerably expands the distribution range of this species. This locality in Slovenia probably represents only the northernmost limit of the range. Further findings can be expected in the restricted area around the Kvarner Gulf and on its islands. d l ABo l A (1987) classified P. krkinus as to be a stepp-associated and perhaps even an insular species. The habitat in which the species occurs in Slovenia fully confirms its steppe-like habitats. Thus far, all specimens have been obtained with suction sampling in an extremely dry and rocky sub-Mediterranean meadow. Among the vegetation in place, Stipa eriocaulis Borbás and Sesleria juncifolia Suffren have been the leading plant species and are therefore considered the most plausible host plant candidates. Since grasses from the genus Stipa are also recorded as host plants of the other two species (EMEl jANo V, 1964; MiTjAEV, 1975, NiCKEl , 2003), Stipa eri- ocaulis can be considered the most likely one. o ther, more abundantly represented plant species were Festuca rupicola Heuff., Carex pumila Thunb., Satureja subspicata subsp. liburnica Šilić, Teucrium montanum l ., Euphorbia nicaeensis All., Ruta di- varicata Ten., Galium corrudifolium Vill., Genista sericea Wulfen, Allium lusitanicum l am. From the original description of P. krkinus, it can be concluded that d labola’s type series only consists of the holotype and a paratype male. d labola apparently did not find female specimens, as he did not describe them. Therefore, a brief description of the female is provided here. d escription of the female [Figures 10 and 11]: Body length 2.9-3.5 mm (avg. 3.25 mm; 15 specimens measured); same colour as males, yellowish-white, uniform, without marked pattern; postclypeus bright yellowish brown with thin whitish transver- sal lines on both sides of the whitish median line. Forewings are mostly uniform yel- lowish-white without or, in some specimens, with scattered brownish patches or streaks along the white veins, notably in apical region; wings may reach the end of the abdomen, but mostly leaving the pygofer and anal tube and often also a part of the tergite Viii, uncovered; pygofer bears numerous robust pale-yellow setae. Ab- dominal tergites pale yellow, 1.–5. medially often brawn with a bright marginal area; sternites ± uniformly pale yellow to bright brown. The pregenital sternite is about twice as wide as long, with ± straight posterior margin or only slightly protruding posterolateral angles and a strongly protruding median process; its basic colour is pale yellow, medially bright brownish, the spine-like process in its apical half always dark brown to almost black [Figures 11 - 12]. The anal tube is very small, almost Acta entomologica slovenica, 31 (2), 2023 140 completely covered by caudal parts of the pygofer. o vipositor pale yellow to light brownish and extends to the end of pygofer. Females are easily recognisable by the typical pregenital sternite, which is of the same shape as in P. hofferi (see BiEd ERMANN & NiEd RiNGHAUS, 2004). P. krkinus, P. admirabilis and P. hofferi are very closely related species. P. krkinus and P. hofferi clearly differ in the structure of the aedeagus, while other morphological characters mostly overlap in both sexes. in P. krkinus, the aedeagus shaft arises from the lower part of the phallobase and then bends sharply upwards, building a very sharp angle with the phallobase, in profile ± straight or only slightly sigmoid; apical appendages (when aedeagus observed from behind) are adpressed to the shaft in their basal third and bent arch-shaped lateroventrally then [Figure 12]. in P. hofferi, the aedeagus shaft arises ± perpendicularly from the middle of the phallobase and is then ± evenly arched upwards in profile; apical appendages are T-shaped, set perpendicular to the shaft axis and then sigmoidal curved downwards (d l ABo l A, 1954; BiEd ERMANN & NiEd RiNGHAUS, 2004). Much less defined are the differences between P. admirabilis and P. krkinus, as both show ± the same structure of male terminalia according to the original descriptions and drawings by MiTjAEV (1975). o ther characteristics, such as degree of body colouration and colour patterns, are difficult to assess without having authentic spec- imens of A. admirabilis for comparison. d escriptive characters may easily be a matter of personal interpretation and, therefore, of a rather vague value for reliable species discrimination. According to Mitjaev’s original description, P. admirabilis should be stronger coloured with more pronounced brown patterns on the vertex and pronotum (MiTjAEV, 1975). in contrast, P. krkinus is light-coloured in all body parts. Nevertheless, very isolated populations of both species and a huge geographical distance between them suggest keeping the two taxa as separate species for now. in Europe and specifically in Slovenia, steppe habitats have become very rare and fragmented. The still-preserved valuable habitats of this type on the edge of the Slovenian Karst and below it, are threatened mainly by the abandonment of extensive grazing and gradual overgrowth with bushes. Endemic species like Praganus krkinus and the newly described Dudanus karra, which are specialised strictly to such envi- ronmental conditions and have a very restricted distribution range, are highly vulner- able and endangered of extinction (GUGl iEl MiNo & al., 2023). Therefore, these habitats also should merit the highest conservation concern in Slovenia. iassinae Amyot & Serville, 1843 *Batracomorphus irroratus Lewis, 1834 [Figure 15] Material examined: Rakitovec, 490 m (Vl 13), 24.6.2022 [GSPC, 1 ♂, 1 ♀]; č rnotiče, 440 m (Vl 14), 21.6.2023 [GSPC, 1 ♀]. The species has a West-Palaearctic distribution ranging from Europe to Mongolia (d MiTRiEV & al., 2023). in Middle- and South-eastern Europe, it is widely but rather scattered distributed in xerothermic grassland on limestone. Helianthemum nummu- larium (l .) Mill. is recorded as its hostplant (NiCKEl , 2003). in Slovenia, it is Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 141 apparently very rare. The studied specimens were collected in very dry karstic pastures on limestone. idiocerinae Baker, 1915 Balcanocerus pruni (Ribaut, 1952) [Figures 21 and 23] New records: Ajševica (Ul 98), 22.3.2005; Ankaran (Vl 04), 6.10.2001 [GSPC, 1 ♂ and 1 ♀]; Banjški Kuk (Ul 99), 19.3.2014; Kromberk (Ul 99), 10.3.2014; l andol, 530 m (Vl 37), 3.6.2021; l oke (Ul 98), 12.3.2017 [GSPC, 4 ♀]; Maribor, 270 m (WM45), 21.9.2021; Skalnica, 300 m (Ul 99), 18.7.2004 [GSPC, 1 ♀]; Vrtojba (Ul 98), 29.3.2014. Some additional records are published in SCHü RRER & l ö CKER (2003). Balcanocerus larvatus (Herrich-Schaeffer, 1835) [Figures 21 and 23] New records: Ajševica (Ul 98), 2.8.2003 [GSPC, 2 ♀♀] and 19.8.2004 [GSPC, 1 ♀]; Ankaran (Vl 04), 6.10.2001 [GSPC, 1 ♀]; Brestovica pri Komnu, 50 m (Ul 97), 6.8.2005; č rnotiče, 420 m (Vl 14), 8.8.2023; d ivača (Vl 25), 24.9.2005; d vori, 170 m (Vl 13), 5.7.2023; l oke (Ul 99), 15.6.2012; Petelinjsko jezero (Vl 46), 9.7.2006; Podnanos, 140 m, 20.6.2006 [GSPC, 1 ♂]; Potoče (Vl 08), 27.7.2005; Rožice, 500 m (Vl 24), 25.7.2006; Stepani (Vl 14), 7.7.2006; Šempas (Vl 08), 27.6.2023; z agorje (pri Pivki) (Vl 35), 9.7.2006. B. pruni and P. larvatus are two closely related species, both associated with Prunus spinosa l . as the host plant. Both develop one generation per year but with completely different life histories. The first one hibernates as an adult, and therefore adults occur from late summer to the beginning of june next year. The second one hi- bernates in the egg stage, and adults occur from the end of june onwards until late September. in late summer, both may occur sympatrically. B. larvatus has a middle- to south-European distribution range, while B. pruni is even more thermophilous and shows a more Mediterranean distribution (NiCKEl & REMANE, 2002; d MiTRiEV & al., 2023). The faunistics of these two species have thus far been studied satisfactorily only for the western part of Slovenia. Metidiocerus rutilans (Kirschbaum, 1868) [Figure 25] New records: Ajševica (Ul 98), 2.7.2006; Avče, 160 m (UM90), 24.5.2018; Bevke (Vl 59), 6.4.2022; Bukovščica, 460 m (VM41), 17.7.2010 [GSPC, 1 ♀]; Hotedršica (Vl 38), 15.5.2017 [GSPC, 1 ♀]; Kanal ob Soči (UM90), 5.7.2003 [GSPC]; l andol, 520 m (Vl 37), 25.7.2022; l oke (Ul 99), 21.6.2017; Mangartska planina (UM94), 25.8.2017 [GSPC, 1 ♀]; Mangartsko sedlo, 1750 m (UM94), 16.9.2019; Miren, 50 m (Ul 98), 6.4.2018 [GSPC, 1 ♀]; Nova Gorica (Ul 99), 24.3.2012 [GSPC, 1 ♂ and 2 ♀♀]; Prelože (Vl 35), 30.3.2012; Preval pri Podutiku, 330 m (VM50), 6.6.2012; Solkan (Ul 99), 21.5.2006 [GSPC]; Škocjanski zatok (Vl 04), 7.5.2016 [d . Vadnjal leg.]; Vipava (Mlake), 120 m (Vl 17), 1.6.2018; Vojsko, 1040 m (Vl 19), 18.8.2001 [GSPC, 1 ♀]; Volče, 480 m (UM91), 7.4.2018 [GSPC, 1 ♂]; Želin (VM10), 25.6.2003 [GSPC, 1 ♂]. Acta entomologica slovenica, 31 (2), 2023 142 A common species with the Euro-Siberian distribution range. its host plants are various willow species (Salix), notably the narrow-leaved ones (NiCKEl , 2003). in Slovenia, it was mainly swept from bushes and trees of Salix purpurea l . and S. alba l . but also from S. caprea l ., S. cinerea l . and S. appendiculata l . Earlier findings of this species in Slovenia were reported by SCHü RRER & l ö CKER (2003). Macropsinae Evans, 1935 Macropsis fuscula (Zetterstedt, 1828) [Figure 24] New records: Grčarice (Vl 85), 21.7.2013; Kobariški Stol, 1300 m (UM82), 8.9.2013; Kolovrat (UM91), 16.8.2018; Kromberk (Ul 99), 21.7.2011; l andol, 520 m (Vl 37), 25.7.2022; l epena, 700 m (UM92), 22.8.2003 [GSPC, 1 ♀]; l ijak (Vl 09), 20.7.2008 [GSPC, 1 ♀]; Mala l azna (Vl 09), 1.8.2010; Mirtovički potok (Vl 84), 21.7.2013; Nova Gorica (Ul 98), 30.8.2011 [GSPC, 5 ♂♂ and 1 ♀]; o silnica (Vl 74), 20.7.2013; Planina Kuk, 1150 m (VM01), 2.9.2006 [GSPC, 1 ♂]; Podpleče, 950 m (VM20), 30.8.2022; Spodnji l okovec, 790 m (Vl 09), 12.8.2014; Strunjan (Ul 94), 10.8.2005 [GSPC, 1 ♀]; Voglarji (z avrh) (Vl 09), 1.8.2010; Volovja reber, 1025 m (Vl 44), 27.7.2017 [GSPC, 1 ♀]; Vremščica, 1000 m (Vl 25), 16.7.2011 [GSPC, 4 ♂♂ and 4 ♀♀]. This leafhopper dwells on various Rubus species (R. idaeus l ., R. caesius l ., R. fruticosus l . s.l.) and is widely distributed across Europe (NiCKEl , 2003, d MiTRiEV & al., 2023). Adults occur from late jun to early September. in the territory of Slovenia, this species was recorded more than a hundred years ago (THEN, 1886; GRä FFE, 1903). Although it is relatively common, recent data on its occurrence and distribution in Slovenia have not been published yet. *Oncopsis tristis (Zetterstedt, 1840) [Figure 26] Material examined: č rni vrh nad Cerknem, 950 m (VM21), 4.7.2009; Gorenji Novaki, 1028 m (VM21), 4.7.2009 [GSPC, 7 ♂♂, 5 ♀♀]; Kranjska gora, 850 m (VM04), 27.7.2008 [GSPC, 1 ♂]; Mala l azna (Vl 09), 1.8.2010 [GSPC, 1 ♀]; Porezen, 1300 m (VM21), 7.7.2018 [GSPC, 1 ♂]; Soriška planina, 1300 m (VM22), 3.8.2008 [GSPC, 8 ♂♂, 8 ♀♀]. The smallest species (3.8-4.6 mm) of the genus Oncopsis associated with birch (Betula pendula Roth and B. pubescens Ehrh.). it has a Eurasian distribution range and is quite common in Europe (d MiTRiEV & al., 2023). its distribution in Slovenia remains poorly studied. All the above localities belong to the upper montane belt, which indicates its preferences for cooler conditions at higher altitudes. Megophthalminae Kirkaldy, 1906 Megophthalmus scabripennis Edwards, 1915 [Figures 27 – 30] New records: Ajdovščina (Vl 18), 1.6.2002 [GSPC, 1 ♂]; Beka (Vl 14), 30.6.2016 [GSPC, 1 ♂ and 1 ♀]; Branik (Golec), 370 m (Vl 07), 25.5.2014 [GSPC, 2 ♂♂ and 1 ♀] and 21.8.2016; Golo Brdo (UM80), 20.5.2016 [GSPC, 3 ♂♂]; Kastelec (Vl 14), 26.5.2016; l okvica (Ul 97), 29.5.2004 [GSPC, 1 ♂]; l ukovec, 380 m (Vl 07), 26.5.2018; Movraž, 240 m (Vl 13), 6.6.2014; Nanos, 900 m (Vl 27), 26.7.2002 Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 143 [GSPC, 1 ♀]; Petrinje (Vl 14), 16.6.2017; Rakitovec (Vl 13), 6.6.2014 [GSPC, 6 ♂♂ and 3 ♀♀] and 31.5.2022 [GSPC, 10 ♂♂ and 4 ♀♀]; Socerb (Vl 14), 21.9.2016 [GSPC, 9 ♀♀]; Spodnji Kras (Vl 14), 21.9.2016; Vale pri Brestovici,140 m (Ul 97), 8.5.2005 [GSPC, 1 ♀] and an earlier published record: Solkan, 100 m (Ul 99), 23.5.1999 [GSPC, 1 ♂ and 1 ♀] (Ho l z iNGER & SEl jAK, 2001). A Mediterranean species, of which distribution range also extends to some warmer parts of Central Europe and Britain (d MiTRiEV & al., 2023). in Slovenia as well, all known records belong to the sub-Mediterranean phytogeographical region. Here, it is rather common in some places on xerothermic dry grasslands. it is somewhat under- recorded, because it is easily confused with the closely related but much more common M. scanicus. Typhlocybinae Kirschbaum, 1868 The genus Arboridia z achvatkin, 1946 in Slovenia and taxonomic ambiguity re- garding the Mediterranean ampelophageous species A. adanae, A. dalmatina and A. vitisuga. There are about 20 leafhopper species belonging to the genus Arboridia in the West-Palaearctic. All are arboricolous, exploiting broad-leaved shrubs and trees as host plants. They are parenchyma-feeders causing speckled discoloured points at the place of piercing. Most are of no economic importance. A few of them tend, however, to temporary gradations, and if they infest cultivated plants, they may be considered minor pests. l ately, such extreme cases have been reported from South Russia, Crimea, and Romania caused by the alien east-Palaearctic species A. kakogawana (Matsumura) (GNEz d il o V & al. 2008; RAd io No VSKAy A & d id ENKo 2015; CHiRECEANU & al. 2019). This species is rapidly spreading towards the winegrowing regions of Southern and Central Europe and is becoming a subject of increased phytosanitary concern (EFSA, 2022). Three further indigenous Arboridia species have also been recorded to provoke similar damage on vines in different east Mediterranean regions. Serious damage on vines caused by Arboridia adanae (d labola, 1957) has repeatedly been reported from different parts of Turkey (y iğ iT A. & ERKil iç , 1987; ö z GEN & KARSAVURAN, 2009; 2010). in the 1960s, several heavy infestations on vines by A. vitisuga (d labola, 1963) were recorded in d almatia, Montenegro, and Bulgaria (VEl iMiRo Vić , 1966, 1968). Again, serious injuries on the leaves of vines in southern d almatia (Korčula, Pelješac) were observed in late summer 2021 and A. dalmatina Wagner, 1962 as the cause iden- tified (unpublished data). in the same period, heavy infestation on vines by an Arboridia species in Apulia in italy has also been reported (PiCCiNNo et al., 2023). My comparative morphological examination of specimens from d almatia and Apulia in 2021 showed, however, that the same species is most likely involved in both populations. All three above-mentioned species have always been reported to occur on Vitis spec., notably on Vitis vinifera. This suggests that they are mono- or at most oligophagous on Vitaceae; therefore, they can be considered to be strictly ampelopha- geous or largely so. Furthermore, all these species show more or less the same structure of male terminalia (aedeagus, styles, pygofer processes). VEl iMiRo Vić (1966) Acta entomologica slovenica, 31 (2), 2023 144 studied in detail the morphology and biology of A. adanae vitisuga populations in southern Montenegro and stated that the body size and colour variation fit the original descriptions of both taxa, A. adanae and A. adane vitisuga, respectively. y oung and summer specimens are, as a rule, lighter than mature and late-season specimens, no- tably those in September, before moving from vines to overwintering plants. Among the large number of dissected specimens, VEl iMiRo Vić (l.c.) did not notice any re- markable variation in the shape of male terminalia. He concluded, ‘The genitalia of all the males we dissected have had the same appearance. if there are two species, then both of them would be represented here (in Montenegro)’ (VEl iMiRo Vič , 1966: 55), suspecting that the entire population likely belong to the same species, which is A. adanae. The question arises of whether the three mentioned species with the same trophism and morphology really co-occur in such a compact distribution area. o r perhaps all three taxa refer to the same species, of which the distribution range stretches from Anatolia and adjacent regions through the southern Balkans to the southern Adriatic region and extends further into southernmost regions in italy? The recent rapid spread of the alien A. kakogawana in southern Russia and south-eastern Europe demonstrates that many Arboridia species apparently possess the flying ability to conquer significant distances. Therefore, it should not be a surprise if the indigenous A. adanae has similar abilities, historically occupying a vaster area suitable to its biological require- ments. if their conspecifity is correct, the senior name Arboridia (Arboridia) adanae d labola, 1957 would have priority. Analysing the chronology of the original descriptions of these three taxa is worth- while, because it additionally suggests their possible conspecificity. First, d labola described Erythroneura adanae n. sp. after specimens caught ‘by sweeping and by net on car’, and there is no reference to its host plant (d l ABo l A, 1957: 66). its host association was only recorded later (l iNNAVUo Ri, 1962). in 1962, W. Wagner described and illustrated male terminalia of A. dalmatina n. sp. based on specimens collected by Petar Novak in the surrounding area of Split (Kaštel Sućurac, Croatia). Both de- scription and illustrations are virtually identical to those of d labola’s A. adanae. Wagner apparently did not know about d labola’s species, as he did not mention it, despite the undeniable similarity, nor he cited d labola’s paper among the references (No VAK & WAGNER, 1962). A year later, d labola published a paper describing a new subspecies Erythroneura (Arboridia) adanae vitisuga based on specimens sent to him by the same collector (Petar Novak) and from the same locality near Split. The only separating features compared to the Anatolian specimens of A. adanae, d labola highlights the larger size and more intense colouration, while the male terminalia show the same principle in both taxa (d l ABo l A, 1963). Again, d labola did not mention the taxon A. dalmatina, nor did he cite Wagner’s work among the references. Vid ANo and ARz o NE (1983) recognised the name A. vitisuga (d labola, 1963) as the junior synonym of A. dalmatina Wagner, 1962. However, this statement has apparently not been accepted by other specialists, as all species lists and databases still retain all three names as valid. d worakovska arbitrarily raised the subspecies A. adanae vitusuga to the species rank, A. vitisuga (d labola, 1963), however without examining authentic Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 145 material (d Wo RAKo VSKA, 1970). After i have examined several dozens of male spec- imens picked from yellow sticky traps with several thousand specimens sent from d almatia (Korčula, Pelješac) [Figure 36], i share the opinion of Vid ANo & ARz o NE (1983) and VEl iMiRo Vić (1966). i have found no discernible variations in male cop- ulatory structures, which would indicate the co-occurrence of another related am- pelophageous species. The ongoing molecular research carried out in italy seems to solve this question (PiCCiNNo et al., 2023). in Slovenia, no representatives of the genus Arboridia associated with vines have been found. Similar injuries on leaves of Vitis vinifera and V. labrusca provoke the indigenous Zygina rhamni (Ferrari, 1882) and the alien Erasmoneura vulnerata (Fitch, 1851) and (SEl jAK, 1993, SEl jAK, 2011). Both regularly occur in vineyards of south- western Slovenia, notably in late summer, but no important damage has been observed thus far. o therwise, six other Arboridia species occur in Slovenia (Ho l z iNGER & SEl jAK, 2001; SEl jAK, 2016). Their faunistics has been little published; therefore, a brief review of the current knowledge is given below [Figure 31]. Arboridia erecta (Ribaut, 1931) New records: Kromberk (Ul 99), 10.7.2011 [GSPC, 1 ♂] and 13.7.2013 [GSPC, 1 ♂]; Šempas (Vl 08), 28.9.2002 [GSPC, 1 ♂ and 1 ♀]; Temnica, 380 m (Ul 97), 24.7.2023 [GSPC, 1 ♂]; Vipava (Mlake), 130 m (Vl 17), 30.6.2022. Arboridia parvula (Boheman, 1845) [Figure 32] New records: Bohinjska Bistrica (VM12), 19.8.2002; č aven, 1240 m (Vl 18), 14.8.2011; d ragonja, 25 m (Ul 93), 31.8.2017 [GSPC, 1 ♂ and 1 ♀]; Godovič, 600 m (Vl 38), 29.8.2001 [GSPC, 1 ♂]; ilovci, 300 m (WM94), 24.7.2023; Koper (Vl 04), 21.10.2003; l abinje, 850 m (VM21), 18.8.2012; l ijak (Vl 09), 9.11.2003; l ekmarje, 390 m (WM31), 7.8.2023; l ivek, 850 m (UM91), 16.7.2005; Nova Gorica (Ul 98), 8.7.2011 [GSPC, 1 ♂]; Panovec (Ul 98), 9.7.2005 [GSPC, 1 ♂]; Parecag (Ul 93), 20.10.2005; Podnanos, 150 m (Vl 27), 17.7.2005; Spodnje Škofije (Vl 04), 22.6.2007; Strunjan (Ul 94), 10.8.2005; Šempas (Vl 08), 28.9.2002 [GSPC, 1 ♂ and 1 ♀]; Vipava (Mlake), 110 m (Vl 17), 30.8.2022; Vogrsko (Ul 98), 23.7.2021; Veliko Mraševo (Wl 37), 20.9.2023 [GSPC, 4 ♂♂ and 5 ♀♀, i. imperl leg.] and 11.10.2023 (679 specimens trapped on a y ST; serious damage on cultivated raspberries noted) Arboridia pusilla (Ribaut, 1936) See SEl jAK, 2016. Arboridia ribauti (Ossiannilsson, 1937) New records: Ajševica (Ul 99), 9.6.2019; Gorje, 580 m (VM21), 8.8.2010; Gornja Branica (Vl 17), 1.8.2012; Grant, 700 m (VM11), 12.6.2010; Grgar (Ul 99), 31.8.2002; jablance (Wl 37), 23.8.2007; Kobarid, 235 m (UM92), 15.9.2001 [GSPC, 2 ♂♂ and 1 ♀]; Kobarid, 270 m (UM92), 5.8.2006; Kromberk (Ul 99), 31.8.2002 [GSPC, 4 ♂♂]; l andol, 520 m (Vl 37), 25.7.2022; l epena, 700 m (UM92), 26.8.2001; Maribor - Piramida, 350 m (WM55), 12.10.2018; Nanos, 900 m (Vl 27), 26.7.2002; Panovec Acta entomologica slovenica, 31 (2), 2023 146 (Ul 98), 29.8.2003 [GSPC, 1 ♂]; Predgrad - Vrhgora (Wl 13), 26.12.2015; Selo pri Prosenjakovcih (WM97), 24.4.2015; Stara Gora (Ul 98), 11.7.2004; Staro Selo (UM82), 28.7.2017; Stražnji vrh (Wl 14), 20.7.2011; Tolminska korita, 270 m (VM01), 30.3.2008 [GSPC, 2 ♂♂ and 1 ♀]; Vitovlje (Vl 08), 25.10.2001; Vodranci (WM94), 28.10.2013; Vogrsko (Ul 98), 23.7.2021; z atolmin (VM01), 3.7.2008; the most com- mon species of the genus in Slovenia. Arboridia spathulata (Ribaut, 1931) [Figure 33] New records: Kromberk (Ul 99), 13.7.2013 [GSPC, 2 ♂♂]; l andol, 520 m (Vl 37), 25.7.2022 [GSPC, 1 ♂]; l ijak (Vl 09), 1.12.2002 [GSPC, 1 ♂ and 1 ♀] and 9.11.2003 [GSPC, 1 ♂]; Nova Gorica (Ul 98), 8.7.2011; Planina pri Ajdovščini (Vl 17), 19.7.2012; Sabotin, 600 m (Ul 99), 10.9.2002 [GSPC, 1 ♂ and 2 ♀♀]; Stara Gora (Ul 98), 29.6.2011; Šempas (Vl 08), 28.9.2002 [GSPC, 1 ♂ and 1 ♀]. Arboridia velata (Ribaut, 1952) New records: Maribor - Tezno (WM55), 16.9.2004 [GSPC, 1 ♂]; for further records see SCHü RRER & l ö CKER, 2003. *Eupteryx immaculatifrons (Kirschbaum, 1868) Material examined: Rakov Škocjan, 500 m (Vl 47), 23.9.2021 [GSPC, 4 ♂♂]; ilovci, 300 m (WM94), 14.6.2023 [1 ♂ trapped on y ST]. A European species with strongholds in Central Europe (d MiTRiEV & al., 2023). To date, it is only known from the above localities, although the host plant, Lamium maculatum l . (NiKEl , 2003), is widespread and common throughout Slovenia (j o GAN & al., 2001). *Eurhadina saageri Wagner, 1937 Material examined: l andol, 520 m (Vl 37), 22.6.2022 [GSPC, 4 ♂♂ and 1 ♀, trapped on light, B. z adravec leg.]; A rare species associated with Quercus robur l . in moist lowland stands (NiCKEl , 2003). The only known site in Slovenia thus far, in l andol near Postojna, confirms such a habitat. in june 2022, a few specimens were caught in the light near the Nanoščica stream, where the oak Q. robur is well represented. l iving high in the canopy makes it harder to detect with the sweeping method; therefore, it may be con- siderably under-recorded. The centre of occurrence of this species is in Central and Eastern Europe, from France to Russia (d MiTRiEV et al., 2023). *Kybos calyculus (Cerutti, 1939) Material examined: o silnica, 320 m (Vl 74), 20.7.2013 [GSPC, 2 ♂♂ and 2 ♀♀]; swept from a tree of Betula pendula Roth. *Tamaricella ribauti (Zachvatkin, 1947) Material examined: Strunjan (Ul 94), 12.9.2003 [GSPC, 5 ♂♂, 1 ♀] on Tamarix gallica l . Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 147 This species was misidentified as T. tamaricis in a previous work (SEl jAK, 2004). Examination of a larger number of specimens from d almatia (Šibenik, Trogir and Split) and the comparison with specimens from Slovenia showed that all studied spec- imens belong to T. ribauti. Therefore, T. tamaricis must be removed from the list of leafhoppers of Slovenia. The locality above is the only one known for this species in Slovenia. Perhaps this is also the northernmost edge of the range in this part of Europe. *Ziczacella heptapotamica (Kusnezov, 1928) [Figures 34 and 35] Material examined: ilovci, 300 m (WM94), 14.6.2023 [GSPC, 1 ♂], 27.6.2023 [GSPC, 1 ♀], 11.7.2023 [GSPC, 3 ♂♂], 24.7.2023 [GSPC, 4 ♂♂ and 10 ♀♀], 7.8.2023 [GSPC, 2 ♂♂ and 8 ♀♀; l . l ešnik leg.], 22.8.2023 [2 ♂♂ and 3 ♀♀]. An eastern Palaearctic species distributed from japan through China, Central Asia, southern Russia to Ukraine (d MiTRiEV & al., 2023). To date, there are no records of its occurrence further west in Europe. The above specimens were collected mainly at yellow sticky traps set to monitor potential vectors of hazelnut phytoplasmas. The traps were placed at the border between a forest and a hazelnut plantation. Six speci- mens were also obtained on August 7, 2023, by sweeping a hop hedge at the edge of the forest. it can only be speculated how the species arrived there. There are two pos- sibilities: it has gradually spread westward from the known areas in Ukraine or Russia but has not yet been detected elsewhere. o r it may have been accidentally introduced, for example, through international trade or travel. in any case, the above-mentioned locality is far from the main transit roads in Slovenia, which suggests that the species is more widespread in this area and has apparently become established. According to the information in the literature, it should live in the undergrowth of forest (ANUFRiEV & EMEl jANo V, 1988). Specifically, hops (Humulus spp.), raspberries (Rubus idaeus l .) and elms (Ulmus spp.) are mentioned as possible food plants (MiTjAEV, 1971). At the above location, specimens were only found on wild hops (Humulus lupulus l .). in external appearance this species resembles the darker coloured representatives of the genus Arboridia. Therefore, it can be easily confused with them or overlooked. Ziczacella heptapotamica is distinguished by a pair of rounded dark spots on the vertex, brown pattern on pronotum and scutellum, and a zigzag brown stripe on each forewing. However, it is unmistakably recognisable by the structure of the male gen- italia. Pygophore with well-sclerotized spiny processes with single apices arising from dorsal margin of lobes. Styli with long and thin inner apical process at least twice as long as outer and subapical process. Shaft of aedeagus with a pair of subapical lateral processes. At the shaft base there is a pair of robust pincers-like processes connected with the shaft by a weakly sclerotized, membranous bridge (ANUFRiEV & EMEl jANo V, 1988). Acknowledgement Many thanks to d r. Manfred Asche and Prof. d r. Hannelore Hoch (Berlin, Ger- many) for confirming the identity of Cixidia lapponica and for valuable comments and suggestions to improve the manuscript. Acta entomologica slovenica, 31 (2), 2023 148 References Anufriev, G. A., Emeljanov, A. 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Acta entomologica slovenica, 31 (2), 2023 152 Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 153 Figure 1: Cixidia lapponica - male (size 8.0 mm) Figure 2: Cixidia lapponica – head from below Figure 3: Cixidia pilatoi and C. lappon- ica, currently known distribution in Slovenia Acta entomologica slovenica, 31 (2), 2023 154 Figure 4: Doratura butzele, male (size: 3.0–3.4 mm) Figure 6: Doratura butzele, aedeagus Figure 7: Doratura butzele, female ‘s pre- genital sternit and genitalia Figure 5: Doratura butzele, female (size: 3.8–4.8 mm Figure 8: Praganus krkinus, male (size: 2.5–2.7 mm) Figure 9: Praganus krkinus, male termi- nalia from below Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 155 Figure 10: Praganus krkinus, female (size: 2.9–3.5 mm) Figure 12: Praganus krkinus; aedeagus, ventral view (A), lateral view (B); female pregenital sternit (C). Figure 13: Dictyophara multireticulata – male (size: 11–14 mm) Figure 11: Praganus krkinus, female’s pregenital sternit Figure 14: Nesoclutha erythrocephala (size: 2.6–3.2 mm) Figure 15: Batracomorphus irroratus (size: 4.0–5.5 mm) Acta entomologica slovenica, 31 (2), 2023 156 Figure 16: Colladonus torneellus, male (size: 4.4–4.9 mm) Figure 18: Anoscopus alpinus – female (size: 4.2–4.7 mm) Figure 19: Metalimnus formosus – male (size: 3.0–3.6 mm) Figure 17: Anoscopus alpinus – male (size: 3.6–4.3) Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 157 Figure 20: Metalimnus formosus and M. steini, known distribution in Slovenia Figure 21: Balcanocerus larvatus and B. pruni, known distribution in Slovenia Acta entomologica slovenica, 31 (2), 2023 158 Figure 22: Balcanocerus larvatus (size: 4.0–4.6 mm) Figure 24: Macropsis fuscula – known distribution in Slovenia Figure 25: Metidiocerus rutilans - cur- rently confirmed distribution in Slovenia Figure 23: Balcanocerus pruni (size: 3.8– 4.2 mm) Figure 26: Oncopsis tristis - currently confirmed distribution in Slovenia Figure 27: Megophthalmus scabripennis – female (size: 3.4–4.0 mm Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 159 Figure 30: The genus Megophthalmus, known distribution in Slovenia Figure 28: Megophthalmus scabripennis – male (size: 2.6–3.5 mm) Figure 29: Megophthalmus scabripennis - 5 th instar nymph Acta entomologica slovenica, 31 (2), 2023 160 Figure 31: The genus Arboridia - species distribution in Slovenia Figure 32: Arboridia parvula (size: 2.6– 3.1 mm) Figure 33: Arboridia spathulata (size: 2.9–3.4 mm Gabrijel Seljak: New records and supplementary information on the geographic distribution of Auchenorrhyncha (Hemiptera) 161 Figure 36: ‘Arboridia dalmatina’ – mass traping on a yellow sticky trap in August 2021 (Croatia, Pelješac); photo d . l emić Figure 34: Ziczacella heptapotamica (size: 2.5–3.0 mm), an adult specimen caught on yellow sticky trap. Figure 35: Ziczacella heptapotamica, the first finding in Slovenia Acta entomologica slovenica, 31 (2), 2023 162