08_Varga_05_21.indd UDC 595.792(1-021.24) NEW SPECIES OF THE GENUS CLISTOPYGA (HYMENOPTERA, ICHNEUMONIDAE, PIMPLINAE) FROM THE AFROTROPICAL REGION O. Varga Schmalhausen Institute of Zoology NAS of Ukraine vul. B. Khmelnytskogo, 15, Kyiv, 01030 Ukraine E-mail: Sancho.Varga@gmail.com O. Varga (https://orcid.org/0000-0002-6285-7830) LSID urn:lsid:zoobank.org:pub:211B828B-DEED-4F32-BFA9-B88F126C0EE6 New Species of the Genus Clistopyga (Hymenoptera, Ichneumonidae, Pimplinae) from the Afrotropical Region. Varga, O. — Clistopyga kenyensis sp. n. from the Southeast of Kenya is described and illustrated. It is the second recorded species of the genus Clistopyga from the country, together with C. incitator (Fabricius, 1793), and the third known species from the Afrotropical Region. K e y w o r d s : Ephialtini, Kenya, parasitoids, taxonomy. Introduction Th e genus Clistopyga Gravenhorst, 1829 is a medium-sized group of ichneumonids belonging to the subfamily Pimplinae. Th is genus is currently represented by 65 known species worldwide, most of which (43 species) are distributed in the Neotropical Region, while the Afrotropical Region remains largely unstudied (Yu et al., 2016; Bordera et al., 2019). Up to now, the only two species of the genus were known from the Africa mainland: Clistopyga africana Benoit, 1956 from South Africa and C. incitator (Fabricius, 1793), a species with mainly Palaearctic distribution, from Kenya (Seyrig, 1935; Benoit, 1956). Little is known on the biology of Clistopyga species as they are rarely observed. Some of the species are reported to be idiobiont (Gauld, 1991) or koinobiont ectoparasitoids (Gauld et al., 1998) of Lepidoptera or spiders (Yu et al., 2016), or parasitoids of spider egg sacs (Fitton et al., 1988; Gauld et al., 1998). In addition, at least one known Neotropical species, C. caramba Castillo & Sääksjärvi, 2015, has a highly modifi ed metasoma, which hypothetically resembles an ant and could be mimetic (Sääksjärvi et al., 2015). Th e detailed behavior and functional morphology of the ovipositor tip of one European member of the genus, associated with a salticid spider egg nest, is described by Fritzén and Sääksjärvi (2016). It is most likely that Clistopyga can represent an evolutionary transition from idiobiont ectoparasitoid parasiting silken lepidopteran cocoons, through those laying eggs in silken egg sacs of spiders, to species groups acting like koinobiont ectoparasitoids on adult spiders (Townes, 1969; Fitton et al., 1988; Gauld & Dubois, 2006; Bordera et al., 2019). Material and methods Th e specimens used in this study are deposited in the collections of the International Centre of Insect Physiology and Ecology, Nairobi, Kenya (ICIPE) and the Schmalhausen Institute of Zoology NAS of Ukraine, Kyiv (SIZK). Images were taken with a Leica Z16 APO microscope equipped with Leica DFC 450 camera and processed by LAS Core soft ware at SIZK. Morphological terminology follows Gauld et al. (1991) and Broad et al. (2018). Zoodiversity, 55(5): , 2021 DOI 10.15407/zoo2021.05.421 422 O. Varga Clistopyga kenyensis Varga, sp. n. (fi g. 1) LSID urn:lsid:zoobank.org:act:22D20CDB-A978-4563-8490-6AE3E1C757D3 M a t e r i a l e x a m i n e d . Holotype }: KENYA, Coast Province, Taita Hills, Chawia Forest, 3.47908º S, 38.34162º E, 1614 m, Malaise trap, next to small forest pond, 09–23.01.2012 (R. Copeland) (ICIPE). Paratypes: 1 {, same locality and date as holotype (ICIPE); 2 }, idem, 05–19.04.2012 (ICIPE); 1 }, idem, 26.12.2011– 09.01.2012 (ICIPE); 1 }, idem, 22.02–08.03.2012 (SIZK). D i a g n o s i s . Th e new species is characterized by the following combination of characters: body brownish dorsally, creamy white ventrally; propodeum aciculate; metapleuron smooth, with few isolated setae; ovipositor weakly upcurved, the length from tip of hypopygium about 1.6× the length of hind tibia; hind wing with nervellus reclivous, distance between fi rst abscissa of M+Cu about 1.3× longer than vein cu-a. Clistopyga kenyensis sp. n. diff ers from both recorded Afrotropical species by the colouration: mesopleuron almost entirely creamy white (from black to red in C. incitator and orange with a central yellow stripe in C. africana); metasomal tergites brownish, creamy white subapically (in both C. incitator and C. africana metasoma is more-or-less unicolour). In addition, it diff ers from C. incitator by the smooth and almost glabrous metapleuron (densely pubescent distally in C. incitator) and the aciculate fi rst metasomal tergite (punctate in C. incitator). Th e newly described species diff ers from C. africana by the thinner and longer ovipositor (about 1.6× the length of hind tibia in C. kenyensis sp. n. comparing to 1.3 × in C. africana), and the longer legs (hind femur 4.7× longer than wide in C. kenyensis sp. n. comparing to 4.0× in C. africana). D e s c r i p t i o n . Holotype. Female (fi g. 1, A, C–G). Body length approximately 8 mm, fore wing 5.5 mm. Head (fi g. 1, C) generally smooth and sparsely pubescent. Antenna with 25 fl agellomeres, fi rst fl agellomere 1.5× as long as second fl agellomere. Maximum diameter of lateral ocellus 0.9 × as long as ocellar-ocular distance. Inner margins of eyes weakly emarginated opposite antennal sockets. Face about 0.7× as long as wide, smooth, sparsely pubescent. Clypeus strongly convex, about 0.4× as long as wide, distinctly separated from face and with the same sculpture, its apical margin concave and weakly notched. Malar space about as long as the basal width of mandible, subocular sulcus distinct. Upper tooth of mandible weakly longer than lower tooth. Occipital carina distinct, concave downwards dorsally. Temple strongly narrowed behind eye, gently rounded. Mesosoma (fi g. 1, D, F). Propleuron smooth, sparsely pubescent. Pronotum smooth, epomia present, but short. Mesoscutum smooth and densely pubescent, with notauli strong, reaching the middle of mesoscutum, central lobe aciculate. Scutellum convex, smooth, sparsely pubescent, with lateral carina present basally. Mesopleuron smooth, sparsely pubescent, epicnemial carina present on lower 0.7 of mesopleuron. Metapleuron smooth, with few insolated setae, submetapleural carina distinct, pleural carina distinct before spiracles, weakly defi ned aft er spirales, almost indistinct (fi g. 1, D). Propodeum aciculate, with only lateromedian longitudinal carinae present on apical 0.1. Legs slender, hind femur 4.7× longer than wide, fi ft h tarsomere about as long as third tarsomere. Fore wing with areolet opened (vein 3rs-m absent); vein 2rs-m short, about 0.3× the distance between 2rs- m and 2m-cu; vein cu-a opposite to Rs&M. Hind wing with nervellus reclivous, distance between fi rst abscissa of M+Cu 1.3× longer than vein cu-a. Metasoma (fi g. 1, E, G) generally strongly sculptured and densely pubescent. First tergite about 1.3× as long as apical width, aciculate, with lateromedian oblique grooves weak, almost indistinct; dorsolateral carina distinct on basal 0.2 of the tergite; median longitudinal carina distinct and strong, reaching the apex of the tergite; glymma present. Second tergite about as long as apical width, rugulo-punctate, with basal and apical oblique grooves forming a rhombic convex area. Tergites 3–5 densely punctate, but punctures with scattered margins, with two lateromediam swellings; the remaining tergites weaker sculptured. Ovipositor (fi g. 1, G) upcurved and thin, the length from tip of hypopygium about 1.6× the length of hind tibia. 423New Species of the Genus Clistopyga (Hymenoptera, Ichneumonidae, Pimplinae) from the Afrotropical Region C o l o u r a t i o n . Body generally brownish dorsally, creamy white ventrally. Head creamy white except apex of mandible, frons centrally, occiput brownish and fl agellum orange. Mesosoma creamy white except mesoscutum partly and propodeum dorsally brownish. Legs creamy white except stripes on hind coxa and hind femur, hind tibia subbasally and apically and tarsus entirely brownish. Metasoma orange with central areas brownish; all tergites creamy white subapically, tergites 1–3 with lateroapical stripes black. Pterostigma and veins brown. Ovipositor orange. Male (fi g. 1, B) generally resembles female, but has smaller body (length approximately 7.0 mm, fore wing 5.0 mm), and some diff erences in colouration: metasoma with fi rst tergite entirely and tergites 2–4 apicolaterally black; hind tibia with indistinct bands. V a r i a b i l i t y . Paratype female has largely yellow head contrasting with creamy white meso- and metasoma. D i s t r i b u t i o n . Currently known only from Kenya. E t y m o l o g y . Th is species is named aft er the country, where it was collected. Th e author is deeply grateful to Robert Copeland (ICIPE), who graciously made the specimens available for study. Th e study was partly supported by the National Research Foundation of Ukraine grant “Leading and Young Scientists Research Support” (registration number 2020.02/0369). Fig. 1. Clistopyga kenyensis sp. n.: A, C–G — holotype female; B — paratype male; A–B — lateral view of habitus; С — frontal view of head; D — lateral view of metapleuron; E — dorsal view of metasomal tergites 1–3; F — dorsal view of head and mesosoma; G — lateral view of the ovipositor tip. Scale bar 0.1 mm. 424 O. Varga References Benoit, P. L. G. 1956. Ichneumonidae nouveaux ou interessants de l’Afrique du Sud. Annals of the South African Museum, 43, 123–135. Bordera, S., Palacio, E., Martínez, J. 2019. Th e Neotropical species of Clistopyga (Hymenoptera, Ichneumonidae, Pimplinae). Part V: the C. diazi species group, with the description of three new species. Zootaxa, 4661 (3), 545–565. Broad, G. R., Shaw, M. R., Fitton, M. G. 2018. Ichneumonid wasps (Hymenoptera: Ichneumonidae): their classifi cation and biology. Handbooks for the Identifi cation of British Insects, 7 (12), 1–418. Fitton, M. G., Shaw, M. R., Gauld, I. D. 1988. Pimpline Ichneumon-fl ies. 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