Homaspis impressus RIEDEL, 2023

Riedel, Pénigot, Schwarz, Diller, Johansson & Japoshvili, G., 2023, Darwin wasps (Hymenoptera, Ichneumonidae) of the Kintrishi National Park, Sakartvelo (Georgia), with descriptions of six new species, Linzer biologische Beiträge 55 (1), pp. 61-153 : 142

Homaspis impressus RIEDEL nov.sp. ( Figs 11-15 )

H o l o t y p e: (♀) Georgia, Kintrishi NP, 1020 m, 41.43459768°N 42.04388812°E, MT 2, 5- 20.v.2018, leg. G. Japoshvili (Tbilisi).

Etymology: The name impressus refers to the deep triangular dorsal impression of the petiolus.

D e s c r i p t i o n: ♀: Body length 8.3 mm. Fore wing length 7.2 mm. Flagellum with 34 flagellomeres, filiform; 1 st flagellomere 3.0× longer than wide. Head covered with rather long erected pale brownish setae. Temple moderately and roundly narrowed behind eye. OED 1.2× and OOD 0.9× ocellar diameter; stemmaticum slightly elevated, with sharp longitudinal rim between lateral ocelli. Frons granulated, dull, with short longitudinal rim in front of anterior ocellus. Occiput with fine punctures, shining and smooth between punctures. Face finely rugose, densely punctate medially. Clypeus distinctly convex in profile, 3.8× wider than long, with scattered punctures, shining; apical margin sharp, slightly concave. Mandible with two teeth; ventral tooth larger and slightly longer than dorsal tooth. Malar space narrow, 0.15× as long as with of mandibular base. Genal carina reaching hypostomal carina close to mandibular base, both carinae low.

Side of pronotum punctate, partly with fine rugae, shining; epomia short. Mesoscutum densely punctate, shining; notaulus weakly impressed in frontal 1/4 of mesoscutum. Mesopleuron smooth, with fine sparse setiferous punctures. Speculum very large, smooth. Metapleuron with fine rather dense punctures, with some rugae at posterior margin. Propodeum superficially punctate, with some superficial rugae medially, covered with long erected grey setae. Area basalis and area superomedia confluent, trapezoid, c 1.4× longer than area petiolaris. Anterior transverse carina absent. Hind femur 4.3× longer than wide. All claws pectinate, with c 4 long teeth. Areolet open laterally (vein 3rs-m absent). Vein 1cu-a slightly postfurcal by 1× its width. Nervellus in hind wing slightly reclivous, intercepted in anterior 0.45.

1 st tergite 2.7× longer than wide; petiolus with transverse rugae laterally, dorso-apically with an almost triangular impression, surrounded by latero-dorsal carinae. Postpetiolus with latero-median carina in basal 0.5, rather densely punctate, smooth. 2 nd tergite 1.25× longer than wide, smooth and shining, with rather dense punctures, basal 0.2 with some fine rugae. 3 rd tergite 1.4× longer than wide, smooth and shining, with sparse punctures which are denser in basal 0.2. Following tergites with sparse punctures. Ovipositor sheath see figure. Ovipositor not reaching behind metasoma apex.

Color: black. Flagellum blackish, reddish-brown in ventro-basal half. Palps ochreous. Mandible centrally, apical 1/3 of clypeus and tegula reddish-brown. 1 st tergite black. 2 nd tergite red, black in basal 0.2 and with two paramedian blackish spot centrally. 3 rd and 4 th tergites red; following tergite brownish, 5 th tergite reddish laterally. Fore coxa brownish. Mid and hind coxae, mid and hind trochanters and hind trochantellus black. Legs otherwise reddish; hind femur reddish-brown. Wings hyaline; pterostigma blackish.

♁ unknown. Taxonomical remark: This new species belongs to the analis species group of Homaspis due to the completely pectinate claws. In the key of Palaearctic Homaspis species ( KASPARYAN 2004) it runs to couplet 7(6) Homapsis divergator AUBERT, 1987 from China, but can be differentiated by a lower number of flagellomeres and different color pattern of legs.

Figures

Figs 11-14: Homaspis impressus RIEDEL nov.sp. HT: (11) face, (12) head from dorsal, (13) propodeum from dorsal, (14) 1st tergite from dorsal.

Fig. 15: Homaspis impressus RIEDEL nov.sp. HT: apical metasoma and ovipositor from dorsal.