Rhorus nigritarsis (Hedwig, 1956)

Kasparyan, D. R., Choi, Jin-Kyung & Lee, Jong-Wook, 2016, New species of Rhorus Förster, 1869 (Hymenoptera: Ichneumonidae: Ctenopelmatinae) from South Korea, Zootaxa 4158 (4), pp. 569-576 : 572

Rhorus nigritarsis (Hedwig, 1956)

( Figs 6–8 )

Dolichoblastus nigritarsis Hedwig, 1956: 30 , голотип: ♀, Германия, “Illasberg im Allgäu vom 29.5.1950 ” (Fischer) (holotype: lost).

Rhorus nigritarsis: Kasparyan, 2012: 654 , 655, 672, 681 (Figs., description, distribution, key) (English); 2014: 198, 199, 215, 227 (Figs., description, distribution, key) (Russian).

Diagnosis. The species is related to Rh. punctus Grav. but differs in a darker coloration and in a movable junction of metasomal tergites 2 and 3. It is also rather similar to the new species Rh. koreensis , but differs from this and other species in the areolation of the propodeum, including total absence of the lateral portions of the apical transverse carina (in Korean specimen, lateral longitudinal carina also entirely absent). The other features characteristic of the species are as follows: a relatively large size (length of fore wing is 7–10 mm), 33–36 flagellomeres, an elongate tergite I (i. terg 2.2) sharply narrowed between the base and spiracles and forming no dorsolateral carinae behind the spiracles; head, thorax, and basal metasomal tergites uniformly covered with distinct dense punctures; teeth on fore claw of tarsi of the female very dense and numerous (about 20 teeth), mandible, sternites, and ovipositor sheath almost entirely blackish brown, legs black to tibiae, and face and clypeus yellow in both sexes.

Material examined. South Korea: 1 ♀, 1980 ; Korea, Seoul, Seocho-gu, Cheonggyesan , 10. V.1 991 (Coll. S.R. Yun) ; 1 ♀. Mt. Cheonmasan , 7.VI.1986, coll. P.G.N. ( YNU) . Germany. Söttingen , 1 ♂, 1 ♀ (Coll. R. Hinz, Zoologische Sammlung des Bayerischen Staates, Munich) . Russia ( ZIN). Khabarovsk Territory: 2 ♀ , Khabarovsk; 1 ♂, Primorskii Territory ; Sakhalin Prov.: 2 ♀ , Sakhalin Island, near Yuzhno-Sakhalinsk ( ZIN). Distribution. This may be an amphi-Palearctic nemoral species.

Figures

FIGURES 6 – 8. Rhorus nigritarsis (Hedwig, 1956), female. 6, habitus, lateral view; 7, head, frontal view; 8, claw of anterior tarsus. Scale bars: 1 mm = 6; 0.5 mm = 7.