Key to Japanese species of the genus Hoplocryptus (female only)

(Female of H. sumiyona is unknown)

1. Metapleuron, propodeum and T I largely to entirely reddish brown to red (Figs 12 A-E, G). Scutellum black, at most slightly tinged with dark reddish brown (Figs 12D, E). Metapleuron red to reddish yellow (Figs 12 A-E). Ovipositor sheath 0.83–0.95 × as long as hind tibia. ......................................... Ho. pini Momoi, 1973

-. Metapleuron and propodeum black (e.g., Fig. 13D). T I black (e.g., Fig. 11F) or reddish brown (Figs 10C, 13E, I). Scutellum sometimes with a yellow marking (Figs 11D, 13E). Ovipositor length various........................................................................2

2. Scutellum with a large (more than 60 % length of scutellum) conspicuous yellow spot (Fig. 13E). T I tinged with reddish brown (Figs 13E, I). Length of malar space 0.75 × as long as basal mandibular width. Ovipositor sheath 0.95 × as long as hind tibia. ................................................. Ho. toshimensis sp. nov.

-. Scutellum black or sometimes with a small (less than 30 % length of scutellum) yellowish brown spot (Fig. 11D). T I black (e.g., Fig. 11F). Other character states various....................................................................3

3. Both T II and T III entirely red (Figs 9F, G). Area basalis widened anteriorly. 2rs-m and vein 3rs-m of areolet weakly convergent anteriorly. Ovipositor sheath 0.9–0.95 × as long as hind tibia. Base of hind tibia whitish yellow. ..................................... Ho. ashoroensis sp. nov.

-. T II and T III black (Figs 10B, G, 11A, B, E, F) or at most partly red (Figs 10A, C). Other character states various.....................................................................4

4. Fore wing with a broad, conspicuous clouded band posterior to pterostigma (Figs 11E, I). Hind TS II, TS III and base of TS IV white (Fig. 11E). .................................... Ho. maculatus sp. nov.

-. Fore wing without a conspicuous clouded area (Figs 10G, K, 11B). Coloration of hind tarsus various....................................................................................5

5. Tegula entirely whitish yellow. Ovipositor sheath slightly longer than hind tibia. White area of antenna rather small, present on two or three segments of flagellum. Base of hind tibia tinged with whitish yellow. Nervellus of hind wing intercepted at the middle by second abscissa of vein Cu. ................................. Ho. sugiharai (Uchida, 1936)

-. Tegula black to blackish brown. Other character states various...........................................................................6

6. Upper valve of ovipositor with six dorsal minute teeth at apex. Ovipositor sheath distinctly shorter than hind tibia. Nervellus of hind wing intercepted at the middle by second abscissa of vein Cu. Hind TS II to TS IV white. Median part of posterior transverse carina sometimes obscured. ...................................... Ho. ohgushii Momoi, 1963

-. Upper valve of ovipositor without dorsal tooth at apex (Figs 3 H-J). Hind tarsus without conspicuous large white area(s) (Figs 10A, G, 11A, B). Other character states various.................................................................................7

7. Ovipositor sheath longer than 1.5× of hind tibia (Figs 10A, 11A, B). Punctures on vertex and mesoscutum relatively dense and large (Fig. 10 I). Scutellum sometimes with a small yellow marking (Fig. 11D).................................................................................8

-. Ovipositor sheath longer than 1.1 × of hind tibia (Fig. 10A). Punctures on vertex and mesoscutum relatively sparse and fine. Scutellum black..............................................................................9

8. Length of mesosoma 1.65× as long as maximum height in lateral view. Median convexity of apical margin of clypeus weak and indistinct (Fig. 1F). Ovipositor slightly upcurved (Fig. 10G). Area basalis widened anteriorly. ............................................... Ho. intermedius sp. nov.

-. Length of mesosoma 1.73 × as long as maximum height in lateral view. Median convexity of apical margin of clypeus strong and distinct (Fig. 1G). Ovipositor straight (Fig. 11A). Area basalis weakly widened anteriorly (Fig. 2H) or its lateral sides almost parallel. ...................................................... Ho. japonicus sp. nov.

9. Lateral sides of area basalis subparallel. Vein 2rsm and vein 3rs-m of areolet convergent anteriorly. Maximum width of propodeum 0.8 × as long as median length of propodeum in dorsal view. ..................................... Ho. alboanalis (Uchida, 1952)

-. Area basalis widened anteriorly. Vein 2rs-m and vein 3rs-m of areolet convergent anteriorly or subparallel. Maximum width of propodeum 0.92–1.0 × as long as median length of propodeum in dorsal view.........................................................................10

10. Vein 2rs-m and vein 3rs-m of areolet convergent anteriorly (Fig. 10F). T II and T III covered with fine and relatively sparse punctures. Metasomal tergites sometime with conspicuous red area(s) (Figs 10A, C). Nervellus of hind wing intercepted below the middle by second abscissa of vein Cu. .............................................. Ho. ezoensis sp. nov.

-. Vein 2rs-m and vein 3rs-m of areolet subparallel. T II and T III covered with coarse and dense punctures. Metasomal tergites without red area(s). Nervellus of hind wing intercepted at the middle by second abscissa of vein Cu. ...................................... Ho. scorteus Momoi, 1968