Apaeleticus nigrithorax, Riedel, 2021

Riedel, Matthias, 2021, A New Contribution to the Knowledge of the East Palaearctic Ichneumoninae (Hymenoptera, Ichneumonidae), Linzer biologische Beiträge 53 (1), pp. 171-240 : 172-173

Apaeleticus nigrithorax nov.sp. ( figs 1-4 )

H o l o t y p e: (♁) " Kyrgyzstan, Jalal-Abad, district Aksyi, Bozbu Mountain, environment of Bospiek, 1510-1700 m, 41.3135°N 71.5040°E, 27.V.2008, leg. E. Hüttinger" (Linz).

D e s c r i p t i o n: Body length 7 mm. Flagellum with 37 flagellomeres, bristle-shaped; 1 st flagellomere 2.8× longer than wide. Tyloids absent. Temple strongly and roundly narrowed behind eyes. OED 1.5× and OOD 1.7× ocellar diameter. Frons and face densely rugose-punctate. Clypeus punctate, moderately convex, and impressed in apical third; apical margin straight, with blunt median tubercle. MI 1.0. Mandible with two teeth, upper tooth longer than lower one. Genal carina distinctly sinusoid ventrally and gena narrowed at ventral eye margin; genal carina reaching hypostomal carina at mandibular base.

Mesosoma coarsely and densely rugose-punctate. Side of pronotum with coarse striae centrally. Sternaulus strongly impressed and almost reaching posterior margin of mesopleuron, with transversal ribs. Epicnemial carina slightly elevated, reaching subtegular ridge. Metapleuron rugose; juxtacoxal carina distinct. Scutellum strongly elevated, wider than long, with scattered fine punctures and distinct lateral carina. Propodeum with roundish spiracles. Area superomedia hexagonal, about as long as wide, anterior transverse carina slightly basad its middle. Area petiolaris strongly impressed and with coarse transverse rugae. Hind coxa and femur finely and densely punctate; hind femur 4.0× longer than wide; claws not pectinate. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 4× their diameter; vein 2m-cu slightly basad its middle. Vein 1cu-a interstitial.

Postpetiolus moderately widened, without distinct dorsal carina; median field c. 2× wider than lateral fields, coarsely punctate, lateral field rugose. 2 nd tergite 0.82× as long as wide. Gastrocoelus slightly impressed. Thyridium transverse, 1.3× wider than the interval. 2 nd to 4 th tergites coarsely and densely rugose-punctate.

Color: black. Flagellum ochreous ventrally. Mandible centrally and malar space ventrally reddish; head and mesosoma otherwise entirely black. 1 st to 4 th tergites entirely and 5 th tergite basally red. Following tergites black. Coxae and trochanters black; coxae ± reddish apically and dorsally. Legs including hind trochantellus otherwise reddish; hind femur in apical 0.1, hind tibia basally and in apical 0.25 and hind tarsus entirely black. Wings slightly infuscate; pterostigma brown.

♀ unknown.

R e m a r k: This new species runs to A. mesostictus (GRAVENHORST) in the key of European Apaeleticus ( RASNITSYN & SIYTAN 1981: 551) , but differs from all known Palaearctic ♁♁ by its entirely black head and mesosoma.

Figures

Figs 1-4: Apaeleticus nigrithorax nov.sp. ♁: (1) habitus from lateral, (2) basal tergites from dorsal, (3) head from frontal, (4) head from dorsal. Figs 5-6: Anisobas mongolicus nov.sp. ♀: (5) face from frontal, (6) propodeum from dorsal.