Hepiopelmus gongshanus, Riedel, 2023

Riedel, Matthias, 2023, Notes on Ichneumoninae (Hymenoptera, Ichneumonidae) from southern China, with descriptions of one new genus and twelve new species, Contributions to Entomology 73 (2), pp. 223-248 : 223

Hepiopelmus gongshanus sp. nov.

Figs 3 , 28-32

Type material.

Holotype. (♀) China, Yunnan, Gongshan 10 km NW, 27.798°N, 98.583°E, 2100 m elev., 10.VI.2009, leg. Blank, Liston & Taeger.

Etymology.

The species name refers to the collection site near Gongshan in Yunnan.

Description.

Female. Body length 18 mm. Flagellum with 51 segments, bristle-shaped; 1st flagellar segment 2.5 × as long as wide; about 13th segment square; widest segments about square. Temple rather short, distinctly and almost linearly narrowed behind eye. OED 1.3 × and OOD 1.0 × ocellar diameter. Temple and frons finely rugose-punctate, dull. Face finely and densely punctate, ± shining. Clypeus almost flat, with larger dense punctures medially, with sparse punctures laterally; apical margin sharp and straight. Mandible with two large teeth; ventral tooth smaller than dorsal one and slightly bent inwards. Malar space 1.0 × as long as width of mandibular base. Gena with rather dense punctures ventrally. Genal carina reaching hypostomal carina far from mandibular base, both carinae low.

Notaulus shortly and weakly impressed at anterior margin of mesoscutum. Mesoscutum with fine and dense punctures, dull. Mesopleuron finely and densely punctate and with longitudinal striae, dull; speculum finely punctate. Metapleuron finely rugose-punctate; juxtacoxal carina present. Scutellum slightly convex and slightly wider than long, finely punctate, with lateral carina in its anterior 0.2. Propodeum finely rugose, without apophysis; spiracle slit-shaped. Area basalis much wider than long, without median tubercle; lateral carina partly obsolete. Area superomedia hexagonal, slightly longer than wide. Costula absent. Area petiolaris coarsely rugose, with distinct lateral carina. Hind coxa finely and densely punctate and with dense short setae, but without scopa. Hind femur finely and densely punctate, 5.0 × as long as wide. External surface of hind tibia without denticular spines. Tarsal claws simple. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 5 × their diameter; vein 2m-cu slightly distal to its middle. Vein 1cu-a s postfurcal by 3 × its width.

Metasoma (semi-)amblypygous; hypopygium slightly longer than distance between its posterior margin and metasomal apex. Postpetiole strongly widened, without latero-median carina; median field not separated, smooth and with very sparse fine punctures, lateral field finely and densely punctate. Gastrocoelus slightly impressed and with few longitudinal ridges. Thyridium moderately oblique, 0.5 × as wide as interval between thyridia. Only 2nd sternite with median fold. 2nd tergite 1.1 × as wide as long. 2nd and 3rd tergites very finely and densely punctate, finely rugose in their anterior halves, dull. Following tergites with fine superficial punctures, ± shining. Ovipositor sheath short, not reaching beyond metasomal apex.

Colour. Black. Scape, pedicel and flagellar segments 1-18 yellowish, distal segments black. Head including palps mainly yellowish; black are occiput, stemmaticum and median frons. Face centrally and clypeus apically with small brownish spots. Mesosoma black; yellowish are propleuron, in part, collar, wide upper margin and wide ventral edge of pronotum, two paramedian stripes (confluent posteriorly) of mesoscutum, tegula, subtegular ridge, large central spots of mesopleuron and mesosternum, prescutellar ridge, scutellum and postscutellum, upper division and central spots of metapleuron, large propodeal spot of area spiraculifera, area externa and area dentipara. Petiole black, postpetiolus yellow. Following tergites reddish-yellow; 2nd and 3rd tergites diffusely brownish anteriorly and yellowish postero-laterally. Legs, except black base of hind coxa, entirely yellowish. Wings hyaline; pterostigma yellowish.

Male. Unknown.

Remarks.

The new species is a typical member of the genus Hepiopelmus Wesmael, a genus which is known from the Palaearctic Region and from higher altitudes of the Oriental Region ( Heinrich 1974a). The new species runs to H. flavomaculatus (Cameron, 1903) in the key of Hepiopelmus ( Heinrich 1974a: 412), but differs by the mainly reddish-yellow metasoma and almost entirely yellow legs.

Figures

Figures 1 - 3. Habitus, dorsal view: 1. Holcojoppa chinensis holotype (HT); 2. Hedyjoppa chinensis HT; 3. Hepiopelmus gongshani HT.

Figures 28 - 32. Hepiopelmus gongshanus sp. nov. HT: 28. Face, frontal view; 29. Head, dorsal view; 30. Propodeum, dorsal view; 31. Basal tergites, dorsal view; 32. Metasomal apex, lateral view.