Key to World species of Deuteroxorides

1. Mesopleuron nearly entirely black (Figs. 1, 8), at most with a small indistinct yellow area below subalar prominence. Mesoscutum without conspicuous yellow areas. Palearctic region...................2

-. Mesopleuron with conspicuous yellow stripes or spots. Mesoscutum with conspicuous yellow areas. Oriental region...................4

2. All coxae and hind femur red. Second to fourth segments of hind tarsus with a conspicuous white band. Ovipositor sheath 0.5–0.7 times as long as fore wing. Distribution: Western Palearctic region. ...................... D. elevator (Panzer, 1799)

-. At least hind coxa and hind femur largely black to blackish-brown (Figs. 1, 6, 8, 10). Second to fourth segments of hind tarsus entirely black (Figs. 8, 10) or with a conspicuous white band (Figs. 1, 6). Ovipositor sheath 0.6–1.0 times as long as fore wing. Distribution: Eastern Palearctic region.......................3

3. All coxae black (Fig. 1). Tegula black to blackish-brown (Fig. 4). Ovipositor sheath 0.6 times as long as fore wing and 1.2–1.3 times as long as hind tibia. POL 0.8 times as long as OOL. Hind tibia with a conspicuous white band (Figs. 1, 6). Hind femur 5.5–6.2 times as long as maximum depth in lateral view. Male unknown. ...................... D. breviterebratus sp. nov.

-. Fore and mid coxae red (Fig. 8). Hind coxa black, sometimes with a reddish-brown area. Tegula yellow to whitish-yellow. Ovipositor sheath 0.7–1.0 times as long as fore wing and 1.4–2.2 times as long as hind tibia. POL 0.6–0.7 times as long as OOL. Hind tibia without a conspicuous white band (Figs. 8, 10). Hind femur 6.3–6.5 times as long as maximum depth in lateral view. ................. D. orientalis (Uchida, 1928) (= D. atratus Kasparyan, 1976 syn. nov.)

4. All coxae black with a small yellow spot. Fore and mid femora red. Mesopleuron with three yellow areas. Mesopleuron densely punctate. Male unknown. ................... D. indicus Gupta, 1980

-. Fore and mid coxae yellow. Fore and mid femora yellow. Mesopleuron with two yellow areas. Mesopleuron sparsely punctate. Female unknown. .................. D. brumhus Gupta, 1980