Hoplismenus brevigena, 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 : 189-190

publication ID	https://doi.org/ 10.5281/zenodo.13153969
persistent identifier	https://treatment.plazi.org/id/351687FF-2909-A40E-FF6B-FC6109F2FAA2
treatment provided by	Felipe
scientific name	Hoplismenus brevigena
status	sp. nov.

Treatment

Hoplismenus brevigena nov.sp. ( figs 16 View Figs 14-18 , 43-46 View Figs 43-46 )

H o l o t y p e: (♀) "Kirgistan [ Kyrgyzstan], Talasskaya oblast, Talass-Gebirge, am Fluss Ara-Byik, 42°23´28´´N 70°58´34´´ E, 2050-2100 m, 03.07.1996, leg. H. & R. Rausch" (Linz).

P a r a t y p e s: (♀) labeled as holotype (coll. Riedel); (♀) " Kirgistan , Kara-Bura valley, W. Tien-Shan, Talass Nut., 1580 m, LF, 26-27.VI.1998, leg. W. Dolin " ( ZSM); (♁) " Afghanistan, Grosser Pamir, Issiktal, Quellflur in Artemisia-Chenopodien-Steppe, 3500 m, 1975-08-18, leg. H. Huss " ( ZSM) .

D e s c r i p t i o n: ♀: Body length 12.0 mm. Flagellum bristle-shaped, with 39-40 flagellomeres; 1 st flagellomere 3.1× longer than wide; widest flagellomeres about square. Temple strongly and linearly narrowed behind eyes; dorsally 0.7× as long as eye. Occipital carina medially edged. OED 1.3× ocellar diameter. Frons rugose-punctate. Face densely rugose-punctate. Clypeus moderately convex, 1.7× wider than long, densely punctate, apical margin with scattered punctures. Mandible narrow, lower tooth smaller than upper tooth and moderately turned inwards (by c. 45°). MI 1.0. Gena coarsely punctate, partly rugose-punctate. Genal carina distinctly curved outwards ventrally, reaching hypostomal carina close to mandibular base; hypostomal and genal carinae low.

Mesosoma covered with short grey hairs. Side of pronotum largely striate; epomia strong. Notaulus distinctly impressed in anterior half of mesoscutum. Mesoscutum densely punctate, smooth between punctures, shining. Sternaulus impressed in anterior half of mesopleuron. Epicnemial carina not distinctly elevated behind fore coxae. Mesopleuron and metapleuron rugose-punctate; juxtacoxal carina ± present. Scutellum distinctly and roundly elevated, about as long as wide, with fine scattered punctures and lateral carina in anterior 0.5. Propodeum coarsely rugose. Area superomedia sickle-shaped, 3× wider than long; anterior transversal carina reaching its middle. Posterior transversal carina with strong dentiform apophyses (about as long as basally wide). Hind coxa densely punctate, without scopa. Hind femur densely punctate, 5.0-5.1× longer than wide. Claws long, slightly bent apically, not pectinate. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 4× their width; vein 2m-cu in the middle. Vein 1cu-a interstitial.

Metasoma oxypygous, hypopygium short. Postpetiolus strongly widened, with distinct dorsal carina; lateral field 0.75× as wide as median field, finely rugose; median field finely rugose. Gastrocoelus distinctly impressed, with strong ridges. Thyridium narrow, transverse, 0.75× as wide as the interval. 2 nd tergite 0.7× as long as wide. 2 nd and 3 rd tergites densely punctate, shining. 4 th tergite with superficial punctures and fine granulation, slightly shining. 2 nd to 4 th sternites with median folds. Ovipositor sheath reaching behind metasomal apex by length of 7 th tergite.

Color: black. Stripes on flagellomeres 11-12 and small spot on frontal orbit ivory. Metasoma entirely red, sometimes apical tergites ± infuscate. Coxae and trochanters black, sometimes with dark red shine; femora, tibiae and tarsi reddish; hind tibia red in basal 0.3, infuscate apically; hind tarsus black. Wings slightly infuscate; pterostigma reddish.

♁: Body length 14 mm. Flagellum with 42 flagellomeres, bristle-shaped; 1 st flagellomere 3.2× longer than wide. Tyloids on flagellomeres 6-20, long-oval, maximally 0.7× as long as their flagellomere. OED 1.0× ocellar diameter. MI 0.9. Scutellum distinctly elevated, almost pyramidal, with transverse central edge on top. Area superomedia rectangular, slightly wider than long. Hind femur 5.3× longer than wide. Claws moderately curved apically. 2 nd tergite 0.9× as long as wide. Thyridium 0.65× as wide as the interval. Structure including genal carina otherwise as described for the ♀.

Color: black. Flagellum black. Stripe on facial orbit, small spot on frontal orbit, spot on subtegular ridge and small central spot on scutellum ivory. Metasoma red. Coxae and trochanters black; femora, tibiae and tarsi reddish; hind tibia dark reddish basally, brownish in apical 3/4; hind tarsus black. Pterostigma reddish.

R e m a r k: Due to the ventrally curved form of genal carina, this new species resembles the European Hoplismenus krapinensis HENSCH. The ♀♀ of H. brevigena differ by longer 1 st flagellomere and slenderer flagellum, reduced ivory flagellar ring, and entirely black pronotum and scutellum. The ♁ differs from H. krapinensis by the reduced yellow coloration of head and mesosoma and the largely black hind tibia and tarsus.

D i s t r i b u t i o n: Afghanistan and Kyrgyzstan.