ACTA ENTOMOLOGICA SLOVENICA
LJUBLJANA, DECEMBER 2015 Vol. 23, št. 2: 143-146
FIRST RECORDS OF AQUATIC HETEROPTERA FROM FRIULI-VENEZIA GIULIA (ITALY)
Fabio Cianferoni1'2 and Simone Cianfanelli1
1 Natural History Museum of the University of Florence, Zoological Section "La Specola", via Romana 17, 1-50125, Florence, Italy; E-mail: fabio.cianferoni@umfi.it 2 Institute of Agroenvironmental and Forest Biology, CNR - National Research Council of Italy, via Salaria 29.300, I-00015, Monterotondo Scalo (Rome), Italy
Abstract - Two species of aquatic Heteroptera are recorded for Friuli-Venezia Giulia (Italy) for the first time: Anisops sardeus sardeus Herrich-Schaffer, 1849 (Nepomorpha, Notonectidae) and Gerris (Gerris) argentatus Schummel, 1832 (Gerromorpha, Gerridae). Remarks on their general distribution are also given.
Key words: Hemiptera, Nepomorpha, Gerromorpha, Anisops sardeus, Gerris argentatus, Friuli-Venezia Giulia, first records.
Izvleček - PRVI NAJDBI VODNIH STENIC (HETEROPTERA) V FURLANIJI-JULIJSKI KRAJINI (ITALIJA)
Dve vrsti vodnih stenic sta prvič zabeleženi za Furlanijo-Julijsko krajino (Italija): Anisops sardeus sardeus Herrich-Schaffer, 1849 (Nepomorpha, Notonectidae) in Gerris (Gerris) argentatus Schummel, 1832 (Gerromorpha, Gerridae). Podane so tudi pripombe o njihovi splošni razširjenosti.
Ključne besede: Hemiptera, Nepomorpha, Gerromorpha, Anisops sardeus, Gerris argentatus, Furlanija-Julijska krajina, prvi podatki.
The knowledge of the aquatic Heteroptera (sensu Polhemus & Polhemus 2008) is still far from perfect in Italy, especially concerning their distribution (Cianferoni & Terzani 2013).
The study of some recently collected samples in Friuli-Venezia Giulia (Italy) allowed us to identify two species which were not previously recorded for this region:
143
Acta entomologica slovenica, 23 (2), 2015
Anisops sardeus sardeus Herrich-Schaffer, 1849 (Nepomorpha, Notonectidae) and Gerris (Gerris) argentatus Schummel, 1832 (Gerromorpha, Gerridae).
Material examined: Ospedaletto, Lago [=Lake] Minisini, 46.2976° N 13.1242° E (WGS84), Gemona del Friuli (UD), 208 m a.s.l., 15.VIII.2014, S. Cianfanelli & M. Calcagno leg., A. sardeus—1 male, 2 females, 1 V instar nymph; G. argentatus—1 micropterous female (alcohol entomological collection: Natural History Museum of the University of Florence, Zoological Section "La Specola").
Anisops sardeus is a widespread species, occurring from the AfTotropical region to the Mediterranean Basin, and reaching India and Myanmar eastwards (see Cianferoni & Pinna 2012 for its updated distribution in Italy). This element recently showed a tendency to spread its range northwards, with new records in Europe from southern Russia, Hungary, Romania, and Slovakia (see Reduciendo Klementova & Svitok 2014 for a review). In Italy it has been discovered in Veneto (Cianferoni & Pinna 2012) and frequently recorded in central-northern Italy (Cianferoni & Terzani 2013; unpublished data). It has been also rediscovered in the Middle Dalmatian Islands (Croatia) after a long time (Kment & Beran 2011). Due to this trend and to the present record for Friuli-Venezia Giulia we can expect to find this species also in the neighboring countries like Slovenia and Austria.
Gerris argentatus is a Sibero-European species, known to date in almost all Italian regions (except Valle d'Aosta, Friuli-Venezia Giulia, and Molise), and in the countries neighboring Friuli: Slovenia and Austrian Carinthia (Servadei 1967; Gogala 2003; Rabitsch 2003; Bacchi & Rizzotti Vlach 2007; Cianferoni & Mazza 2012). Due to the scant and scattered records, its distribution in most of Italy requires further investigation (Cianferoni & Mazza 2012).
Dioli (1987) presented a comprehensive checklist of the Heteroptera of Friuli-Venezia Giulia, but up to date it is still not possible to know the exact number of the aquatic taxa living there because some records (cf. Servadei 1967; Dioli 1979) need verification.
Riassunto
Due specie di Eterotteri acquatici sono segnalate per la prima volta per la regione Friuli-Venezia Giulia: Anisops sardeus sardeus Herrich-Schaffer, 1849 (Nepomorpha, Notonectidae) e Gerris (Gerris) argentatus Schummel, 1832 (Gerromorpha, Gerridae). Inoltre vengono fornite note sulla distribuzione generale dei due taxa.
References
Bacchi, I., Rizzotti Vlach, M., 2007: Insecta Heteroptera Nepomorpha and Gerromorpha. In: Ruffo, S. & Stoch, F. (Eds): Checklist and Distribution of the
144
Fabio Cianferoni, Simone Cianfanelli: First records of Aquatic Heteroptera from Friuli-Venezia Giulia (Italy)
Italian Fauna. Memorie del Museo Civico di Storia Naturale di Verona, 2aserie, Sezione Scienze della Vita, 17 (2006): 147-149 + CD-ROM.
Cianferoni, F., Mazza, G., 2012: The aquatic Heteroptera (Insecta: Hemiptera) of the "Foreste Casentinesi, Monte Falterona e Campigna" National Park (Central Italy). Zootaxa, 3568: 36-52.
Cianferoni, F., Pinna, A., 2012: Segnalazioni faunistiche italiane. 529 - Anisops sardeus sardeus Herrich-Schäffer, 1849 (Hemiptera Heteroptera Notonectidae). Bollettino della Societa entomologica italiana, 144 (1): 44-48.
Cianferoni, F., Terzani, F., 2013: Nuovi dati su Gerromorpha e Nepomorpha in Italia (Hemiptera Heteroptera). Bollettino della Societa entomologica italiana, 145 (2): 51-57.
Dioli, P., 1979: Eterotteri del Friuli. 1. Primo nucleo di collezione presso il Museo Friulano di Storia Naturale di Udine. Gortania - Atti del Museo Friulano di Storia Naturale, 1: 147-161.
Dioli, P., 1987: Il popolamento degli Eterotteri (Insecta Heteroptera) in Friuli e Venezia Giulia. Biogeographia, 13: 605-619.
Reduciendo Klementová, B., Svitok, M., 2014: Anisops sardeus (Heteroptera): A new expansive species in Central Europe. Biologia, 69/5: 676-680.
Gogala, A., 2003: Heteroptera of Slovenia, I: Dipsocoromorpha, Nepomorpha, Gerromropha and Leptopodomorpha. Annales - Annals for Istrian and Mediterranean Studies, Series Historia Naturalis, 13: 229-240.
Kment, P., Beran, L., 2011: Check-list of water bugs (Hemiptera: Heteroptera: Nepomorpha) in Croatia with two new records and four rediscoveries. Natura Croatica, 20 (1): 159-178.
Polhemus, J.T., Polhemus, D.A., 2008: Global diversity of true bugs (Heteroptera; Insecta) in freshwater. Hydrobiologia, 595: 379-391. http://dx.doi.org/10.1007/ s10750-007-9033-1
Rabitsch, W., 2003: Die Wanzensammlung am Landesmuseum Kärnten. Rudolfinum - Jahrbuch des Landesmuseums für Kärnten 2002 [2003]: 451-480.
Servadei, A., 1967: Rhynchota (Heteroptera, Homoptera Auchenorrhyncha). Catalogo topografico e sinonimico. Fauna d'Italia, Vol. IX. Calderini, Bologna, 854 pp.
Received/Prejeto: 26. 5. 2015
145
Acta entomologica slovenica, 23 (2), 2015
146