Apsilops

Yoshida, Takuma, Nagasaki, Osamu & Hirayama, Tomoko, 2011, A new species of the genus Apsilops Förster (Hymenoptera: Ichneumonidae: Cryptinae) from Japan; parasitoid of an aquatic crambid moth, Zootaxa 2916, pp. 41-50 : 47-48

Key to the world species of the genus Apsilops

The following key is largely based on Schwarz (1989) and Townes (1962). Morphological differences among the three European species are subtle ( Rimsky-Korsakow 1932; Schwarz 1989; Horstmann 1990). We do not have enough material to determine intraspecific variation, and therefore we are not totally convinced that these are all distinct species. More material is needed to confirm the validity of these species.

1. Seventh tergum without a white spot. Abdomen often partly or mostly reddish brown. Body stout...................... 2

- Seventh tergum with a white spot. Abdomen black except for the apical white spot. Body slender..................... 3

2. Propodeal spiracle subcircular to elongate oval. Upper face of propodeum moderately convex. Fourth and fifth terga of male partly or entirely reddish brown, of female entirely reddish brown. North America................. A. bicolor (Cushman)

- Propodeal spiracle a long, narrow slit. Upper face of propodeum almost flat in female, more convex in male. Fourth and fifth terga of both sexes entirely blackish. North America.......................................... A. sericata (Viereck)

3. Ovipositor sheath 1.0–1.1 times as long as hind tibia. All coxae black. Setae on face and propodeum brownish in female. Hon- shû, Japan............................................................................. A. japonicus n. sp.

- Ovipositor sheath 0.6–0.9 times as long as hind tibia. Fore and middle coxae reddish brown. Setae on face and propodeum whitish (in A. hirtifrons , setae brownish on face)............................................................ 4

4. Trochanters and trochantelli dark brown. Nervellar index 1.0–1.6. North America................. A. hirtifrons (Ashmead)

- Trochanters and trochantelli reddish brown. Nervellar index 0.4–1.0.............................................. 5

5. Hind tibia uniformly dark brown. 2nd–4th maxillary palp segments white. Java, Indonesia. (Known from only the holotype, female.)........................................................................... A. scotinus (Tosquinet)

- Hind tibia mostly reddish brown. Maxillary palp light brown to dark brown...................................... 6

6. Scutellum black in female. Finland. Male unknown. (Known from only the holotype.).............. A. tenebrosus Hellén

- Scutellum white in female. Europe........................................................................ 7

7. Area superomedia longer than wide. Posterior side of area superomedia (median portion of posterior transverse carina) weakly convex posteriorly ( Fig. 29 ). Palpi light to reddish brown. In female, basal half of antenna mostly reddish brown. In male, hind coxa black........................................................................ A. cinctorius (Fabricius)

- Area superomedia about as long as wide, somewhat longer or somewhat wider. Posterior side of area superomedia (median portion of posterior transverse carina) dipped anteriorly ( Fig. 30 ). Palpi dark brown. In female, basal half of antenna mostly dark brown. In male, hind coxa reddish brown............................................ A. aquaticus (Thomson)

Figures

FIGURES 29 – 30. Area superomedia of Apsilops spp., females. 27, A. cinctorius; 28, A. aquaticus.