Scopesis sachalinensis ( UCHIDA 1930)

Riedel, Matthias, H, Andres & Schmidt, Stefan, 2024, Revision of the Palaearctic species of Scopesis FÖRSTER (Hymenoptera, Ichneumonidae, Ctenopelmatinae), Linzer biologische Beiträge 56 (1), pp. 201-252 : 221-222

Scopesis sachalinensis ( UCHIDA 1930) (figs 12, 29, 45, 66, 86)

Original: Scopesus sachalinensis UCHIDA, 1930: 294 , ♀ ♁.

Lectotype: (♀) Saghalin, Adachi, Issiki (Sapporo), type examined.

syn. nov. Scopesis alpivagans HEINRICH, 1949: 89 , ♀ ♁.

No syntypes but material determined by Heinrich examined. D e s c r i p t i o n: ♀. Body length 7.5–10.0 mm. Flagellum with 36–40 segments; 1st

flagellar segment 4.4–5.5× as long as wide and 1.8–2.2× as long as 2 nd segment; 2 nd segment 2.4–2.8×, 3 rd segment 2.1–2.5× and preapical segment 1.3–1.5× as long as wide. Temple moderately and roundly narrowed behind eye. OED 1.5–1.6× ocellar diameter. Face wide, granulate, inner eye margins parallel or slightly convergent. Clypeus slightly convex, shining, not bulging medially, with fine sparse punctures, apical margin with small flat extensions laterally. Ventral mandibular tooth equal to or slightly larger than dorsal tooth. MI 0.2–0.4.

Mesoscutum granulate, without distinct punctures, dull. Notaulus usually impressed in frontal 0.3 of mesoscutum. Mesopleuron finely granulate, dull, without or with very superficial punctures ventrally; without or with fine striae dorsally. Speculum with microsculpture, but ± shining. Propodeum granulated. Area superomedia without lateral carina; area petiolaris usually with obsolete carina medially. Lateral longitudinal and pleural carinae of propodeum usually complete. Hind femur 4.3–4.7× as long as wide. Inner apical spur of hind tibia 0.56× as long as hind metatarsus. Vein 2rs-m 0.8–0.9× as long as vein M between veins 2rs-m and 2-mcu. Vein 1cu-a postfurcal by 1–3× its width. Nervellus of hind wing vertical, intercepted in its apical 0.6. 1 st tergite 1.5–1.9× as long as wide, without latero-median carina. 2 nd tergite 1.0–1.4× as wide as long.

Color: black. Flagellum ochreous or red, ± brownish dorsally. Palps mainly, mandible except teeth, clypeus and sometimes ventral margin of face narrowly yellow. Tegula usually brown or black, rarely reddish or yellow. 1 st tergite usually black, sometimes ± reddish, 2 nd to 3 rd tergites entirely and often 4 th tergite basally red. Coxae, trochanters and trochantelli black; legs otherwise red; fore and mid femora often basally black; hind femur entirely black; hind tibia reddish or yellowish, black at narrow base and in apical 0.2–0.4; sometimes distal mid tarsomere and hind tarsus except yellowish base of metatarsus black. Pterostigma yellow or ochreous.

♁. Body length 8.5 mm. Flagellum with 36–39 segments; 1 st flagellar segment 5.3–5.9× as long as wide and 1.7–2.0× as long as 2 nd segment; 2 nd segment 2.8–2.9× and 3 rd segment 2.5× as long as wide. Temple slightly or moderately and roundly narrowed behind eye. OED 1.6-1.7× ocellar diameter. MI 0.5. Mesopleuron granulate ventrally, with fine rugae in dorsal half. Speculum with microsculpture, shining. Area superomedia sometimes with lateral carina. Hind femur 4.4–4.8× as long as wide. 1 st tergite 1.7–2.1× as long as wide, without latero-median carina. 2 nd tergite 1.0–1.2× as wide as long.

Color: black. Palps, mandible, clypeus, face, ventral spot of scape and sometimes tegula yellow. Often apical margin of 1 st tergite, 2 nd tergite ±, 3 rd tergite entirely and 4 th tergite ± red. Coxae black, fore and mid coxae sometimes with apical yellow spots. Fore and mid trochanters and all trochantelli ± yellow. Legs otherwise red; fore and mid femora usually ± infuscate basally; hind femur black; hind tibia yellowish, infuscate in apical 0.3-0.4. Distal tarsomeres sometimes and hind tarsus brownish. Pterostigma ochreous.

Hosts: unknown.

D i s t r i b u t i o n: Transpalaearctic, studied material from Austria, France *, Germany, Italy *, Siberia (Irkutsk region), Sakhalin, United Kingdom *.

Taxonomical remarks: The hind tibiae of European ♀♀ are mainly reddish, the Eastern Palaearctic ♀♀ have yellowish hind tibiae, but we could not find other differences between the Western and Eastern Palaearctic material and therefore synonymized Scopesis alpivagans HEINRICH with Scopesis sachalinenis (UCHIDA) here.