ZOOSYSTEMATICA ROSSICA ISSN 2410-0226 Zoological Institute, Russian Academy of Sciences, St Petersburg ▪ https://www.zin.ru/journals/zsr/ [ onl ine] 0320-9180 Vol. 28(1): 163–176 ▪ Published online 13 June 2019 ▪ DOI 10.31610/zsr/2019.28.1.163 [ print] RESEARCH ARTICLE Review of the Pantolyta genus (Hymenoptera: Diapriidae: Pantolytini) from Russia, with description of a new species Обзор рода Pantolyta (Hymenoptera: Diapriidae: Pantolytini) фауны России с описанием нового вида V.G. Chemyreva & V.A. Kolyada В.Г. Чемырева, В.А. Коляда Vasilisa G. Chemyreva, Zoological Institute, Russian Academy of Sciences, 1 Universitetskaya Emb., St Petersburg 199034, Russia. E-mail: [email protected] Victor A. Kolyada, Palaeontological Institute, Russian Academy of Sciences, Moscow 117997, Russia. E-mail: [email protected] Abstract. Seven species of the genus Pantolyta Foerster are found to occur in Russia. One species, P. ele- gans sp. nov. from Russia (Kunashir I.) and Japan (Hokkaido I.), is described as new for science. Eight known species of Pantolyta are reviewed and keyed. Colour illustrations are provided to all species. Резюме. Установлено, что семь видов рода Pantolyta Foerster обитают в России. Один вид – P. ele- gans sp. nov. из России (о. Кунашир) и Японии (о. Хоккайдо) – описан как новый. Даны обзор и определительный ключ для восьми известных видов Pantolyta. Для всех видов подготовлены цветные иллюстрации. Key words: diapriid wasps, taxonomy, fauna, Russia, Diapriidae, Pantolytini, Pantolyta, new species, new records, key Ключевые слова: диаприиды, таксономия, фауна, Россия, Diapriidae, Pantolytini, Pantolyta, но- вый вид, новые находки, определительный ключ ZooBank Article LSID: urn:lsid:zoobank.org:pub:D97367D5-0C35-441B-A208-A047AA8DF4E2 Introduction an Part of Russia), P. pallida (European Part of Russia; Moldova) and P. semirufa (Russian Far The genus Pantolyta Foerster, 1856 includes East: Primorskiy Terr.). Unfortunately, all of his small (body length 1.5–2.8 mm) wasps of the Di- determinations were incorrect. Macek (1993) in apriidae from Belytinae subfamily. Until recent- his revision of the Palaearctic Pantolyta species ly seven species of Pantolyta were known in the proposed many new synonyms, and provided a Palaearctic Region and in the whole World (John- new useful key and diagnosis for all valid species. son, 1992; Macek, 1993), and all of them were However, the determination of the Pantolyta spe- described from the Europe: P. atrata (Foerster, cies is still problematic because the key was based 1861), P. hadrosoma Macek, 1993, P. margi nalis on specimens collected mainly from Central Eu- (Kieffer, 1909), P. nixoni Macek, 1993, P. pal- rope and variation range of the species was un- lida Kieffer, 1908, P. semirufa Kieffer, 1908 and known. P. stylata Kieffer, 1908 (Macek, 1993). The aim of this work is to review species of Kozlov (1978) recorded three species of Pan- Pantolyta occurring in Russia, describe one new tolyta in the fauna of Russia: P. atrata (Europe- species, and provide a new identification key. © 2019 Zoological Institute RAS and the Author(s) V.G. Chemyreva & V.A. Kolyada. Pantolyta genus from Russia Material and methods Six of seven previously known Palaearctic spe- cies of Pantolyta (except P. stylata) are found to This work is based on the insect collection of occur in Russia, and one more species is described the Zoological Institute of the Russian Academy as new to science. Three specimens were found of Sciences, St Petersburg, Russia (ZIN). The belonging to an undescribed species. Additional data and reference collection of Jan Macek in distributional records are given for several neigh- the National Museum, Prague, Czech Republic boring countries. Biology and hosts are unknown (NMPC), and additional samples from two oth- for all here included species. er museums, the National History Museum, Uni- versity of Tartu, Tartu, Estonia (NHMT) and the Hungarian National History Museum, Budapest, Key to Palaearctic species of Pantolyta Hungary (HNHM), were used. Female Material for this study was collected in various 1. Pterygopolymorphic species, in winged morphs ra- parts of Russia and several neighboring countries dial cell open (Figs 47, 48, 56, 62) .............. 2 by yellow pan traps and by net sweeping. The ho- – Only macropterous species with radial cell closed lotype of the new species is housed in the collec- (Figs 18, 24, 33, 40) .......................... 5 tion of NMPC, and two paratypes are housed in 2. Axillar depression with verriculate tubercle (Fig. ZIN. Most of the non-type specimens comes from 46, arrow); antennal shelf weakly prominent, head the ZIN if not stated otherwise. Morphological not nasiform (Fig. 49) ........ P. pallida Kieffer terminology and abbreviations follow Masner & – Axillar depression without verriculate tubercle; García (2002), Yoder (2004), Naumann (1982) antennal shelf distinctly prominent, head nasiform and Yoder et al. (2010). Measurements mostly fol- (Figs 4, 50, 58) ............................... 3 low Yoder (2004); measurements of venation are 3. Eyes small, largest diameter of eye 0.5 times as long shown in Fig. 24. The term verriculate tubercle as malar space (eyes small both in micro- and mac- (see Fig. 13, arrow; Fig. 16, arrow; Fig. 64) is used ropterous specimens) ......... P. stylata Kieffer after Yoder (2004). – Eyes large, largest diameter of eye at less 0.7 times as long as malar space (eyes quite small only in mi- New records are marked with an asterisk (*). cropterous specimens) ........................ 4 The general distribution of species follows Nixon 4. Temples in dorsal view parallel (Fig. 4) .......... (1957) and Macek (1993). Species of Pantolyta can ............................. P. atrata Foerster be recognized in the East Palaearctic fauna using – Temples in dorsal view receding (Fig. 50) ....... the generic keys by Nixon (1957), Kozlov (1978) ............................ P. semirufa Kieffer and Macek (1989). The differences between close- 5. Pronotal collar and pronotal shoulders smooth, ly related genera Pantolyta and Acropiesta Foerst- epomia obsolete (Figs 38, 39); A1 with sharply er, 1856 were discussed by Macek (1998). pointed flange (Fig. 41, arrow) .................. All colour photographs were obtained using .............................. P. nixoni Macek a Leica M165 stereomicroscope equipped with a – Pronotal collar rugose, with transverse keel; prono- Leica DFC450 camera. Image stacking was per- tal shoulders angular; epomia present (Figs 13, 15, formed with Helicon Focus 5.0. 25, 34); A1 without apical flange (Figs 21, 23, 31) ............................................. 6 Taxonomy 6. Axillar depression with verriculate tubercle (Figs 13, 16, arrows); anterior part of T2 and S2 narrower Order Hymenoptera than petiole (Fig. 19) ........ P. elegans sp. nov. – Axillar depression without verriculate tubercle; an- Family Diapriidae terior part of T2 and S2 slightly wider than petiole Subfamily Belytinae ............................................. 7 7. Genae in frontal view convex (Fig. 22); plicae Tribe Pantolytini strongly produced posteriorly .................. Genus Pantolyta Foerster, 1856 ......................... P. hadrosoma Macek – Genae in frontal view convergent (Fig. 30); plicae Pantolyta Foerster, 1856: 128, 130, 135 weakly produced posteriorly (Fig. 35) ........... Type species Pantolyta atrata Foerster, 1861. ........................ P. marginalis (Kieffer) 164 ( Zoosystematica Rossica, Vol. 28, No. 1, pp. 163–176 V.G. Chemyreva & V.A. Kolyada. Pantolyta genus from Russia Male & V. Zherikhin leg.), 1 male; Buryatia, Yeravninsky Distr., Vitim River, Baisa, 16–27 June 1997 (M. Mos- 1. Radial cell open (Figs 47, 48, 56, 62) ........... 2 tovski leg.), 3 males; Vitim River, Romanovka, July – Radial cell closed (Figs 18, 24, 33, 40) ......... 5 1969 (V. Zherikhin leg.), 1 male; Yakutia, Oymyakon- 2. Axillar depression with verriculate tubercle (Fig. sky Distr., Tomtor, 5–27 August 1990 (V. Alekseev 46, arrow); antennal shelf weakly prominent, head leg.), 14 females; Magadan Prov., Srednekansky Distr., not nasiform (Fig. 49); A1 short and stout, shorter 12 km N of Seymchan, 30 August 1975 (Marshakov than half of head width ....... P. pallida Kieffer leg.), 1 male; Amur Prov., Zeya Nature Reserve, 17 Au- – Axillar depression without verriculate tubercle; gust 1981 and 2 September 1981 (V. Alekseev leg.), 2 antennal shelf distinctly prominent, head nasiform females; Khingan Nature Reserve, Kundur, 18–20 July (Figs 4, 50, 58); A1 long and slender, distinctly lon- 2003 (S. Belokobylskij leg.), 1 female. ger than half of head width (Figs 5, 51) ......... 3 Differential diagnosis. Pterygopolymorphic 3. Eyes small, largest diameter of eye at most 0.7 times as long as malar space ......... P. stylata Kieffer species (Figs 1, 3, 4). In winged morphs, radial – Eyes larger, largest diameter of eye at less 0.9 times cell open (Fig. 3). Antennal shelf distinctly prom- as long as malar space ......................... 4 inent; head nasiform (Fig. 4); temples in dorsal 4. Temples in dorsal view parallel (Fig. 4); fore tibia view pa rallel (Fig. 4). Epomia distinct (Fig. 7). incurved, with a row of long stout setae (Fig. 9); Axillar depression without verriculate tubercle. A3 rather thickened, with deep emargination (Figs A1 in both sexes long and slender, distinctly longer 6, 8) ......................... P. atrata Foerster than half of head width and without apical flang- – Temples in dorsal view receding (Fig. 50);