Agriotypus jilinensis Chao 1981
Creators: name: Choi, Jin-Kyung
name: Lee, Jong-Wook
name: Konishi, Kazuhiko
name: Suh, Kyong-In
name: Bennett, Andrew M. R.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Agriotypus
Agriotypus jilinensis

description: Agriotypus jilinensis Chao, 1981
Figs 1, 6 C – D, 7 A, C, 8 A, B
Agriotypus jilinensis Chao, 1981: 79. Chao & Zhang, 1981, by original description.
Specimens examined.
Holotype: ♂, China: Changbaishan Nature Reserve, Jilin Province, 25. vi. 1980 (Y. Zhang) (Fujian Agriculture and Forestry University). Other material: South Korea: 1 ♀, 2. iv. 2015, Toegokgyo, Toegok-ri, Yeongok-myeon, Gangneung-si, Gangwon-do (S. W. Jeong) (NNIBR); 1 ♀, 27. iv – 10. v. 2003, Jirisan, Hamyang-gun, Samjeong-li, 700 m asl, Malaise trap in a big clearing, 35 ° 20 ' 55 " N, 127 ° 38 ' 21 " E, (P. Tripotin) (EUM); 1 ♀, 11. iv – 8. v. 2004, Jirisan, Macheon-myeon, Samjeong-li, 700 m asl, Malaise trap on small stream in forest clearing, 36 ° 20.930 ' N, 127 ° 38.503 ' E, (P. Tripotin) (EUM); 1 ♀ 18 ♂♂, 8. v – 5. vi. 2004, Jirisan, Macheon-myeon, Samjeong-li, 700 m asl, Malaise trap on small stream in forest clearing, 36 ° 20.930 ' N, 127 ° 38.503 ' E, (P. Tripotin) (EUM); 1 ♀, 11–18. v. 2003, Jirisan, Samcheon-ri, Macheon-myeon, Hamyang-gun, Gyeongsangnam-do, Alt. 700 m, in cleared resinuous forest, (P. Tripotin) (DNUE _ IIEI); 2 ♂♂, 24. iv. 1997, Mt. Odae, Pyungchang, Kangwon, yellow pan trap (J. Y. Choi) (EUM); 1 ♀, 2–26. v. 2006, above small stream, Dunjeon-ri, Sangchon-myeon, Yeongdong-gun, Chungcheongbuk-do, Alt. 750 m, 36 ° 04 ' 36 " N, 127 ° 50 ' 17 " E, (P. Tripotin) (DNUE _ IIEI).
Description.
Female. Body length 5.6–6.7 mm; fore wing length 4.5–5.2 mm.
Head. Face width (minimum length of inner orbits) 1.1 times as wide as its median height (length between antennal socket and clypeal margin), with a median vertical ridge (see Fig. 4 G in Bennett 2001), with dense punctures and hairs except area between lateral ocellus and eye impunctate (Fig. 1 B). Antenna with 20–22 flagellomeres, 0.5 times as long as fore wing. Temple behind eyes slightly roundly narrowed in dorsal view. Antennal scrobe deep. POL: OOL = 1: 1–1: 2. Face with median longitudinal ridge, coarse rugosity and dense pubescence. Area between antennal sockets with a glabrous short longitudinal tubercle. Clypeus in anterior view with apical margin truncate, not pointed; anterior edge in profile moderately convex; summit of convexity in lateral view angulate; shape of angular summit of clypeus in anterior view rounded medially (Fig. 1 B). Distance between anterior tentorial pits 1.2–1.3 times as long as length between a tentorial pit and eye. Occipital carina weak, but complete. Malar space 1.4 times as long as basal width of mandible; mandible twisted, lower tooth longer than upper one.
Mesosoma. Pronotum with long and strong epomia extending dorsal of furrow and almost straight. Mesoscutum shiny, anterior 1 / 2–2 / 3 of median lobe moderately punctate and setose, the rest of medial lobe and all lateral lobes completely impunctate and lacking setae; notaulus distinct, meeting at around middle (Fig. 1 D). Scutellum in dorsal view, long triangle-shaped, 1.6 times as long as its basal width including spine, 0.9–1.1 times as long as propodeum; scutellum with lateral carinae at base, convex medially, tapering toward apex, spine-like apical half, smooth (Fig. 1 E); spine 0.5–0.6 times as long as propodeum (distance as long as lateral longitudinal carinae from base to apex); in lateral view roundly curved medially, weakly up-curved (Fig. 8 D). Mesopleuron finely punctate and pubescent, with longitudinal groove complete, without longitudinal carina on anterior edge at mid-height; epicnemial carina curving sharply anteriorly to meet anterior edge of mesopleuron and with a vertical extension dorsally; sternaulus present as a weak and wide groove. Metapleuron finely punctate and pubescent Propodeum with lateromedian longitudinal carinae almost parallel; lateral longitudinal carinae straight, complete and parallel to lateromedian longitudinal carinae (Fig. 1 F, G).
Wings. Fore wing with 1 cu-a distad M & Rs; abscissa of vein M between 2 rs-m and 2 m-cu 1.0–2.0 times as long as 2 rs-m. Hind wing with 6–8 distal hamuli; vein 1 / Cu & 1 cu-a intercepted by 1 / Cu in lower 0.44 Cu (Fig. 1 I).
Metasoma. Metasomal tergite I 3.0–4.2 times as long as its posterior width (Fig. 1 C), 1.6 times as long as length of propodeum; metasomal tergite I finely punctulate-reticulate, spiracles situated at anterior 0.20–0.25; lateromedian carinae and dorsolateral carinae complete and strong, reaching to apex. Metasomal tergite II and following tergites densely punctulate and shiny (Fig. 1 J). Metasomal tergite II without dorsal and dorsolateral carinae. Ovipositor sheath 0.6 times as long as length of hind basitarsus.
Colour. Generally reddish brown. Head, pronotum, mesoscutum and metasoma reddish brown. Scutellum and metasomal tergite I dark reddish brown. All legs, mesopleuron and propodeum almost black. Fore wing with fuscous longitudinal bands and with wide hyaline spots occupying middle of basal cell, discosubmarginal cell and distal half of marginal and basal of fourth submarginal cells (Fig. 6 C); hind wing hyaline (Fig. 1 I).
Male. Agrees with the above-mentioned description of the female, except for the following character states: Body length 5.5–7.4 mm (holotype: 7 mm); fore wing length 4.7–6.0 mm; antenna with 29–34 flagellomeres (holotype: 32 flagellomeres); mesoscutum entirely punctate with setae; spine of scutellum laterally compressed and slightly up-curved or straight (Fig. 8 B); abscissa of vein M between 2 rs-m and 2 cu-m 0.3–0.9 times as long as 2 rs-m (Fig. 6 D); metasomal tergite I 5.4 times as long as apical width, lateromedian carina incomplete posterior to 0.2 length of segment; body, antenna and legs black; wings hyaline except apical marginal area of fore wing weakly tinged with brown. Male genitalia and hypopygium shown in Fig. 7 A, C, with digitus relatively weakly elongated but shorter than half of paramere, somewhat broadened toward apex (Fig. 7 C). Apex of paramere almost truncate with corners rounded. Penis valve slightly curved ventrally; basal apodeme of aedeagus striate dorsally.
Variation. The scutellar spine of the male holotype is straight and relatively stout apically compared to some South Korean A. jilinensis specimens that are more upcurved and tapered (although some are straight and non-tapered as in Fig. 8 B).
Larva. Unknown.
Host.
Unidentified Trichoptera.
Distribution.
China (Jilin), South Korea (new record).
Region.
Eastern Palaearctic.
Remarks.
This species has been known previously from only two pharate males (holotype and paratype). Thus, this is the first description of the female and of the wings of the male. (Korean name: Am-bul-eun-bae-mul-beol).
description: Published as part of Choi, Jin-Kyung, Lee, Jong-Wook, Konishi, Kazuhiko, Suh, Kyong-In & Bennett, Andrew M. R., 2024, Description of one new species of Agriotypus Curtis, 1832 (Hymenoptera, Ichneumonidae, Agriotypinae) from South Korea, pp. 471-490 in Journal of Hymenoptera Research 97 on pages 471-490, DOI: 10.3897/jhr.97.119871