©Slovenian Entomological Society, download unter www.biologiezentrum.at
LJUBLJANA, JUNE 2001
Vol. 9, No. 1: 35-37
SYSTEMATIC NOTES ON PLECOPTERA: ANACRONEURIA PROXIMA KLAPALEK (PLECOPTERA: PERLIDAE)
Bill P. STARK1 and Ignac SIVEC2
1 Department of Biology, Box 4045, Mississippi College, Clinton, Mississippi, 39058, USA, e-mail: stark@mc.edu
2 Prirodoslovni muzej Slovenije, Prešernova 20, 1000 Ljubljana, Slovenija e-mail: ignac.sivec@guest.arnes.si
Abstract - A female lectotype is designated for Acroneuria proximo Klapalek, 1923 and the species is redescribed. Anacroneuria crenulata Jewett, 1958 is placed as a junior synonym.
Key words: Plecoptera, Perlidae, Anacroneuria, Mexico.
Izvleček - TAKSONOMSKI ZAPISKI O VRBNICAH: ANACRONEURIA PROXIMA KLAPALEK (PLECOPTERA: PERLIDAE)
Podajamo ponovni opis vrste Acroneuria proximo, Klapalek, 1923, z opisom lek-totipa samice. Vrsta Anacroneuria crenulata Jewett, 1958 je uvrščena v sinonimijo.
Ključne besede: Plecoptera, Perlidae, Anacroneuria, Mehika.
Anacroneuria proximo was proposed by Klapalek (1923) for a male and female from Costa Rica and a female specimen from Mexico. The identity of this species has remained doubtful because no figures were included in the original description and the type series was presumed to be missing (Stark 1998). Recently, however, one of us (IS) found the Mexican syntype in the "Klapalek collection" at the National Museum Prague, and that specimen forms the basis of this report.
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©Slovenian Entomological Society, download unter www.biologiezentrum.at Acta eiltomologica, 16 (2), 2001
Anacroneuria próxima Klapálek
Anacroneuria próxima Klapálek, 1923:23. Lectotype Mexico, here designated.
Anacroneuria próxima: Stark, 1998:603.
Anacroneuria crenulata Jewett, 1958:171. New synonymy.
Adult habitus: Color pattern somewhat obscured by specimen condition. Head mostly yellow but lappets and a small area between ocelli dark brown. Pronotum dark brown along lateral third to half of disc, but with pale rugose areas and a pale mesal band (Fig. 1). Hind legs dark brown in distal fourth of femora and at proximal and distal ends of tibiae. Wings transparent, pale with pale brown veins.
Female: Forewing length 11 mm. Subgenital plate four lobed; lateral lobes broadly rounded, median lobes narrow and more triangular in outline; median notch deeper than lateral notches. Transverse sclerite of sternum nine slender and covered with a patch of prominent setae; median sclerite trilobed with large setae restricted to posterolateral lobes and short fine setae found in the stalk of the median lobe and adjacent areas of the lateral lobes (Fig. 2).
Comments: The lectotype, here designated in order to ensure the name's proper and consistent application, bears a typewritten "cotypus" label, a handwritten "Anacroneuria próxima Kip., Klapalek det." label, a folded, handwritten "Perla dilaticollis Pict." label, and a blue handwritten "Mexico, Deppe" label. The specimen is in relatively good condition but the base of the subgenital plate is damaged. Previously one of us (BPS) studied the female holotype of A. crenulata Jewett in the Illinois Natural History Survey and this specimen is conspecific with A. próxima. Although the other syntypes of A. próxima are from Costa Rica, these specimens are considered lost and, if found, they probably will represent some other species of Anacroneuria; consequently, A. próxima should be removed from the Costa Rica list until its presence there is confirmed by specimens.
Acknowledgment
The assistance of Dr. Pavel Chwojka, National Museum Prague, is gratefully acknowledged. We also thank Dr. Boris Kondratieff for his helpful review of an early draft of the manuscript.
References
Jewett, S.G., 1958: Stoneflies of the genus Anacroneuria from Mexico and Central
America (Plecoptera). Am. Midi. Natur., 60: 159-175. Klapalek, F., 1923: Plécoptères nouveaux. Ann. Soc. Eni. Belg., 63: 21-29. Stark, B.P., 1998: The Anacroneuria of Costa Rica and Panama (Insecta: Plecoptera: Perlidae). Proc. Biol. Soc. Wash., Ill: 551-603.
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B. P. Stark, I. Sivec: Systematic notes on plecoptera: Anacronewia próxima Klapálek |ie