Oriental, Riedel, 2011

Riedel, M., 2011, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Southeastern Asia: 1. Tribes Clypeodromini, Listrodromini, Goedartini, Compsophorini, and Platylabini, Linzer biologische Beiträge 43 (2), pp. 1549-1572 : 1557

Key for the of Oriental Listrodromus species

1 Malar space very long, length about 2 times the width of mandibular base, second tergite 1.2-1.25 times as long as wide. Tergite 1-2 reddish. Java, Laos. ............................... ........................................................................................................ L. javae HEINRICH 1975

- Malar space shorter, not more than 1.6 times as long as the width of mandibular base. Second tergite more or less transverse, tergite 2 with black or dark brown ground colour..................................................................................................................................2

2 Mesopleura, metapleura and propodeum with yellowish spots. Flagellum with 18 flagellomeres, basal flagellomeres very short, first flagellomere about 1.5 times as long as wide. Malaysia. ........................................................................ L. flavomaculatus nov.sp.

- Metapleura and propodeum without yellowish or ivory spots, mesopleura black or with pale spots in front of the prepectal carina. Flagellum at least with 19 flagellomeres, first flagellomere at least twice as loing as wide.................................................................3

3 Mesoscutum with two ivory or yellowish spots on the apical third. Mesopleura with ivory or yellowish spots in front of prepectal carina. Tergites 4 and 5 without pale coloration............................................................................................................................4

- Mesoscutum and mesopleura black, without pale spots. Tergites 4 and 5 with ivory or yellowish spots....................................................................................................................5

4 A smaller species, body length 7-8 mm. Light coloration ivory Propodeum except metapleura reddish, Tergite 6 with a small ivory spot. Malaysia, Padang ............................ .......................................................................................................... L. propodealis nov.sp.

- A larger species, body length 8.5 mm. Light coloration yellowish. Propodeum blackish, Tergite 6 black. Sabah .................................... L. propodealis sabahensis nov.ssp.

5 Hind femur and tibia red, not darkened. Hind claws without distinct teeth. Sulawesi .......... .................................................................................................... L. simplex HEINRICH 1927

- Hind femur and tibia basally and apically more or less darkened. Hind claws with distinct teeth. Widespread in Southern and Southeast Asia................... L. crassipes (CAMERON 1907)