Ectopius sibiricus, Riedel, 2020

Riedel, Matthias, 2020, Contribution to the knowledge of Ichneumoninae of Siberia and Far East Russia (Hymenoptera, Ichneumonidae), Beiträge Zur Entomologie = Contributions to Entomology 70 (2), pp. 365-386 : 367-368

Ectopius sibiricus spec. nov.

urn:lsid:zoobank.org:act:AD4C044E-A817-41C5-B24B-83085E159819

( Figs 15–17 )

Holotype:  “ Russia ( Far East ), Primorsky Kray, 3 m, Lasorsky Zapoviednik N 43°01'07" E 133°07'46", sandy coast 13.6.-6.7.01 Malaise trap, M. Kuhlmann ” ( EDI).

Description: . Body length 5 mm. Flagellum with 30 flagellomeres, distinctly lanceolate; 1 st flagellomere 4x longer than wide; widest flagellomeres c. 2x wider than long. Temple moderately and roundly narrowed behind eye ( Fig. 1 ). Frons with fine punctures, otherwise smooth and shining. Face closely punctate. Clypeus more sparsely punctate, intervals smooth and shining. Gena 0.8x as wide as the compound eye. Malar space 0.6x as long as width of mandibular base. Mandible with two teeth; upper tooth distinctly longer than lower one. Genal carina reaching hypostomal one close to mandibular base, both carinae low.

Notaulus not impressed. Mesoscutum with dense and coarse punctures, intervals smooth and shining. Mesopleuron and metapleuron densely punctate, smooth. Sternaulus indistinct, epicnemial carina narrow. Scutellum moderately convex, slightly wider than long, with lateral carina in its basal half. Area superomedia about rectangular, 2.5x wider than long. Costula distinct medially, obsolete laterally, reaching area superomedia in its middle. Area petiolaris rugose, ± matte. Spiracles of propodeum long-oval. Outer corner of area dentipara without apophysis. Hind femur 4.1x longer than wide. Hind metatarsus c. 0.5x as long as hind tibia and about as long as combined length of 2 nd to 4 th hind tarsomeres. Claws not pectinate (in contrast to E. rubellus ). Areolet pentagonal; 2 nd recurrent vein distal to its middle. Nervulus interstitial. Nervellus of hind wing interstitial, intercepted in its apical 3/4.

Metasoma amblypygous. Petiolus wider than high, rather long. Postpetiolus moderately widened, c. 0.7x as wide as the distance of outer hind corners of the areae dentiparae, with weak dorsal carina. Median field of postpetiolus almost smooth and shining, lateral field rugulose. 2 nd tergite 1.25x wider than long. Gastrocoelus triangularly impressed, smooth ( Fig. 1 ). Thyridium indistinct. 2 nd tergite with dense coarse punctures, intervals smooth and shining. Punctures of 3 rd tergite somewhat shallower, with microsculpture laterally, but shining. 4 th tergite with very superficial punctures and with microsculpture. Ovipositor sheath narrow (as in E. rubellus ), conically narrowed to apex.

Color: Black. Basal flagellomeres reddish-brown, flagellomeres 8-13 with ivory stripes. Spots on frontal orbit, apical 0.4 of malar space, mandible centrally, and spot on subtegular ridge ivory. Scutellum reddish centrally. Metasoma black; 2 nd to 7 th tergites with very narrow yellowish hind margins. Coxae and trochanters black; fore and mid trochanters with yellow spots frontally. Legs otherwise red; hind femur red, darkened in apical 0.15; hind tibia yellowish-red in basal 0.6 and black in apical 0.4; hind tarsomeres brownish, basally yellowish. Pterostigma ochreous.

: unknown.

Remark: The new species resembles Ectopius rubellus (GMELIN) in general appearence and coloration, but differs by the form of the antenna, temple and 2 nd tergite. The claws have small teeth in Ectopius rubellus (GMELIN) , but are not pectinate in E. sibiricus spec. nov.

Figures

Figs 15–17: Ectopius sibiricus spec. nov. : 15. face, 16. head from dorsal, 17. basal tergites. – Figs 18–20: Hoplismenus flagellator

Figs 1–8: Habitus of: 1. Aoplus ocellator spec. nov. , 2. Chasmias paludator sibiricus subspec. nov., 3. Coelichneumon septenus TOWNES et al., new , 4. Protichneumon nigriventris spec. nov. , 5. Ichneumon flavocoxalis spec. nov., 6. Ichneumon megextensorius spec. nov., 7. Ichneumon pilocephalus spec. nov., , 8. Ichneumon taegeri spec. nov. .