Alcochera Förster

Sun, Shu-Ping, Li, Tao, Zong, Shi-Xiang & Sheng, Mao-Ling, 2021, The genus Alcochera Förster (Hymenoptera, Ichneumonidae, Ctenopelmatinae) in China with a key to world species, Zootaxa 5023 (2), pp. 273-283 : 274-275

Key to the world species of Alcochera Förster

1. Clypeus evenly convex toward subapex, apical margin evenly arcuate. Antenna with a median white ring. Metasomal tergites black, or posterior margins of tergites 1 and 2 narrowly white. Hind coxa black, or with slightly dark reddish............ 2

- Subapical portion of clypeus distinctly convex transversely, median portion of apical margin truncate or slightly concave. Antenna without median white ring. Metasomal tergites at least with large yellow or yellowish white spots. Hind coxa red or entirely black........................................................................................ 3

2. Areolet triangular, 2rs-m approximately 0.45 × as long as 3rs-m. Lateromedian longitudinal carina of propodeum 0.3 × as long as length from anterior margin to posterior transverse carina. Tegula yellow. Middle femur reddish brown....................................................................................... A. albicervicalis Sheng & Fan, 1995

-. Areolet ( Fig. 8 ) oblique quadrilateral, 2rs-m approximately 0.88 × as long as 3rs-m. Lateromedian longitudinal carina of propodeum ( Fig. 9 ) complete from anterior margin to posterior transverse carina. Tegula black, with yellow margin. Middle femur brownish black................................................... A. flavoclypeata Sheng & Sun , sp. nov.

3. Face yellowish white, black laterally. Apical portion of flagellum and hind tarsi almost entirely white................................................................................................ A. albiapicalis Sheng, 2017

-. Face entirely black or yellowish white. Flagellum and hind tarsus entirely black, or partly reddish brown................ 4

4. Fore wing 2rs-m as long as 3rs-m. Fore and mid coxae yellowish white; hind coxa black. Tergite 1 black; tergite 2 reddish brown, with large irregular brownish black spots......................................... A. aequalis Sheng, 1998

-. Fore wing 2rs-m distinctly shorter than 3rs-m. Fore and mid coxae black (except A. unica , its hind coxae brownish red); hind coxa and tergites different coloration...................................................................... 5

5. Areolet joining vein 2m-cu at lower posterior corner. Tergites 2–3 entirely brownish red. Basal portion of hind tibia brownish red. Ventral profile of apical portion of flagellum reddish brown, dorsal profile brownish black.................................................................................................. A. truncata Sheng & Sun , sp. nov.

-. Areolet joining vein 2m-cu distinctly basal of lower posterior corner. Tergites black, or partly yellow to reddish yellow. Hind tibia black, or basal portion yellowish white. Flagellum with different coloration................................... 6

6. Face and hind coxa black. Tergites 1–4 reddish yellow............................... A. flavipes ( Gravenhorst, 1829)

-. Face yellow. Hind coxa red or predominantly brownish red. Tergites black, or at least first tergites 1 and 2 black.......... 7

7. Basal portion of lateromedian longitudinal carina of propodeum absent. Hind femur brownish red. All tergite almost entirely black......................................................................... A. nikkoensis ( Uchida, 1930)

-. Basal portion of lateromedian longitudinal carina of propodeum present. Hind femur black. Tergite 3 brownish yellow with blackish spots................................................................... A. unica Sheng & Sun, 2013

Figures

FIGURES 6–9. Alcochera flavoclypeata Sheng & Sun, sp. nov. Holotype. Female. 6 Mesoscutum 7 Mesosoma, lateral view 8 Areolet 9 Scutellum, postscutellum and propodeum, dorsal view.