Notosemus Förster, 1869

Sheng, Mao-Ling, Sun, Shu-Ping, Zhang, Ying & Liang, Yan-Ping, 2016, Three new species of the genus Notosemus Förster, 1869 (Hymenoptera, Ichneumonidae, Ichneumoninae) from China, with a key to the world species, European Journal of Taxonomy 209, pp. 1-19 : 16-17

Key to species of Notosemus Förster, 1869

1. Head and mesosoma entirely black.Face with dense punctures. Clypeus smooth, with distinct, but very sparse punctures. Speculum large, smooth. Interocellar area with distinct, dense punctures. Ovipositor evenly upcurved.(Palaearctic Region) ………………………………… N. inornatus Gokhman, 1993

– Head and mesosoma with extensive red, yellow or white spots. Other characters not as above ……2

2. Mesopleuron, mesosternum and propodeum red. Clypeus with dense punctures. Maxillary and labial palpi black. Hind tibia black, basallly red. (Oriental Region) …… N. rufomaculatus ( Cameron, 1903)

– Mesopleuron and mesosternum black, brownish yellow, or with white spots. Propodeum black, or with white spots. Other characters not as above ………………………………………………3

3. Propodeum entirely black, without crest. Mesosternum entirely redish or yellowish brown. Hind tarsomeres brownish black to black. (Palaearctic Region) ……… N. bohemani ( Wesmael, 1855)

– Propodeum with large lateral whitish yellow spot, with crest. Mesosternum entirely black. Hind tarsomeres 2–4 white, whitish yellow or brown ……………………………………………………4

4. Propodeal spiracle elongate, 2.7× as long as wide. Tergite 5 with large apical median membranous area. Hind tarsomeres 2–4 whitish yellow. (Oriental Region) ……………………………………… ………………………………………………………………… N. polyambonios Kusigemati, 1986

– Propodeal spiracle oval, 1.6–2.1× as long as wide. Hind tarsomeres brown, if medially white, tergite 5 with very narrow and weak apical median membranous area ………………………………………5

5. Upper tooth of mandible almost as long as lower tooth. Antenna with 39 flagellomeres, apically distinctly flattened below. Juxtacoxal carina absent. Areolet quadrate. (Oriental Region) …………… …………………………………………………………………… N. planus Sheng & Sun , sp. nov.

– Upper tooth of mandible distinctly longer than lower tooth. Antenna at most with 34 flagellomeres, apically cylindrical. Juxtacoxal carina distinct. Areolet pentagonal ………………6

6. Frons with dense fine punctures, without median longitudinal groove. Face yellowish white, with a small median brown spot. Mesoscutum with two median yellow or reddish brown spots. Metapleuron mostly reddish brown or with large white spot. Tergite 2 black, basally and apically yellowish white ………………………………………………………………………………………………………7

– Frons with very fine, indistinct punctures and distinct median longitudinal groove.Median longitudinal band of face black. Mesoscutum and metapleuron entirely black. Tergite 2 black, apical 0.2 yellowish white. (Oriental Region) …………………………………………… N. variegatus ( Tosquinet, 1903)

7. Area superomedia absent or posteriorly open. Tergite 5 with large apical median membranous area. Metapleuron mostly reddish brown. Hind tarsus brown. (Oriental Region) ………………… …………………………………………………………… N. albimaculatus Sheng & Sun , sp. nov.

– Area superomedia complete. Posterior margin of tergite 5 with indistinct apical median transverse membranous area. Metapleuron black with large median white spot (male metapleuron blackbrown). Hind tarsomeres 2–4 white. (Oriental Region) ……… N. wugongicus Sheng& Sun , sp. nov.