Cryptus, Fabricius, 1804

Watanabe, Kyohei, 2020, Expression of green fluorescent protein defines a specific population of lamina II excitatory interneurons in the GRP :: eGFP mouse, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 49, pp. 29-66 : 41

Key to Japanese species of the genus Cryptus (Female only)

(Female of Cr. lugubris atrifemur is unknown)

1. Metasomal tergites largely red or orange ( Figs 6D, E )....................................................................................2

-. Metasomal tergites without large red or orange area.................................................................................3

2. Metasomal tergites red except for base of T I and T IV (excluding base) to apex of metasoma. Flagellum with a white band. Body usually longer than 10 mm. .............................. Cr. dianae (Gravenhorst, 1829)

-. Metasomal tergites entirely orange except for base of T I ( Figs 6D, E ). Flagellum without a white band ( Fig. 6D ). Body shorter than 8.5 mm. ....................................... Cr. daidaigaster sp. nov.

3. Legs nearly entirely black. Antenna without a white band. Apex of metasomal tergite without a white spot. ....................................... Cr. konoi Uchida, 1936

-. Femora reddish brown to red. Antenna with a white band. Apex of metasomal tergite with or without a white spot.............................................................................4

4. Apex of T VII without a white spot. Fore and mid coxae each entirely black. ...................................... Cr. spiralis (Fourcroy, 1785)

-. Apex of T VII with an oval white spot. Fore and mid coxae each black with yellow area. ...................................... Cr. nipponensis Uchida, 1930 (not seen by the author)

Figures

Fig.6. Caenocryptoides convergens Momoi,1966 (A-C,TMNH) and Cryptus daidaigaster sp.nov.(D-J, NIAES) ― A, D, I, lateral habitus; B, E, head,mesosoma and metasoma,dorso-lateral view; C, F, J, head,frontal view;G, propodeum, dorsalview; H, right wings.