Chasmias paludator 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 : 372-373

Chasmias paludator sibiricus subspec. nov.

( Figs 2 , 10, 12, 14)

Holotype:  “ Russia Far East , Primorskiy kray, Anisi-

movka (= Kangenus), 70 km E Vladivostok, 43.11° N

132.41° E, 250 m, 7.VI.1993, leg. A. Taeger ” ( SDEI) .

Paratype:  “ Russia Far East , Khabarovskiy kray, Boit-

sovo 20 km N Bikin, Kamenistaja Griva Hill , 47.02° N

134.25° E, 300 m, 27.V.1993, leg. A. Taeger ” ( SDEI) .

Description: . Body length 10.5–11 mm. Flagellum filiform, with 27 flagellomeres; 1 st flagellomere 2.9x longer than wide; widest flagellomere c. 1.1x wider than long. Temple slightly and roundly narrowed behind eye, dorsally 0.75x as long as eye. Distance of lateral ocellus to eye 1.1x ocellar diameter. Frons rugose-punctate and weakly granulate. Face transversely rugose-punctate. Clypeus with coarse punctures and coarse longitudinal rugae; apical margin concave, with blunt median tooth. Gena wide, with scattered coarse punctures ventrally. Mandible with two teeth, lower tooth smaller than upper one. Malar space 0.8x as long as width of mandibular base. Genal carina reaching hypostomal carina away from mandibular base, both carinae low.

Mesosoma covered with short brownish hairs. Notaulus distinctly impressed in frontal 1/4 of mesoscutum. Mesoscutum densely punctate, finely granulate but ± shining. Mesopleuron and metapleuron densely rugose-punctate, juxtacoxal carina present. Scutellum almost flat, about as long as wide, with scattered fine punctures, without lateral carina. Area superomedia elongate, almost rectangular, c. 1.7x longer than wide; costula indistinct. Area externa punctate. Area petiolaris rugose, with lateral carina. Hind coxa densely punctate, covered with rather long and dense whitish hairs ventrally, but without distinct scopa. Hind femur 3.8–4.1x longer than wide. Claws not pectinate. Areolet pentagonal, frontal distance of intercubiti 2x their diameter; 2 nd recurrent vein slightly distal to its middle. Nervulus postfurcal.

Metasoma oxypygous. Postpetiolus moderately widened, without dorsal carina; lateral field punctate, 0.4x as wide as median field; median field with few fine striae and punctures, partly smooth and strongly shining. Gastrocoelus impressed, with some fine ridges. Thyridium oblique, 0.7–0.9x as wide as the interval. 2 nd tergite 1.1x longer than wide. 2 nd and 3 rd tergites finely and densely rugose-punctate; 2 nd tergite with longitudinal rugae in basal half. Ovipositor sheath distinctly extending behind metasomal apex (by length of 2 nd hind tarsomere).

Color: Black. Stripes on flagellomeres 7/8-12, scutellum, narrow apical margin of 6 th tergite and entire 7 th tergite ivory.2 nd tergite with dark brownish suffusion. Legs black; femora narrowly reddish basally; fore and mid tibiae and tarsi ± reddish; hind tibia reddish in basal 2/3, infuscate apically. Wings hyaline, pterostigma pale ochreous.

: unknown.

Remark: This new subspecies differs from the European Chasmias paludator paludator (DESVIGNES, 1856) by its smaller size, slightly longer basal flagellomeres and mainly blackish instead of red femora.

Figures

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. .