Orthogonis Hermann

Young, Charles L. & Hradský, Milan M., 2007, Robber flies of South Korea III. South Korean species of the Subfamily Laphriinae Macquart, 1838 (Diptera: Asilidae), Zootaxa 1388, pp. 1-23 : 20

Genus Orthogonis Hermann

( Figs 20–23 , 25 , 57, 58 )

Orthogonis Hermann, 1914: 132 . Type species: Laphria scapularis Wiedemann, 1828 [des. Hull (1962: 330)]. Vein closing the discal cell usually aligned and confluent with the vein closing the fourth posterior cell, or offset by a short distance ( Fig. 23 ), leaving the lower end vein of the discal cell quite short; rather bare flies of dark blue black coloration and blackish wings; tergal bristles strong ( Hull 1962).

Orthogonis sp. represents the only species of the genus recorded from South Korea. Oldroyd (1972) notes eight to ten Oriental species.

Figures

FIGURES 19 – 23. 19. Choerades caudatus, male extension. 20 – 23 Orthogonis sp. 20. Male genitalia, lateral. 21. Gonopod. 22. Male genitalia, ventral. 23. Wing.

FIGURES 24 – 28. Heads. 24. C. amurensis. 25. Orthogonis sp. 26. C. sp. 27. C. caudatus. 28. C. caucasicus.

FIGURES 57 – 58. 57. Orthogonis sp., ♂ dorsal. 58. Orthogonis sp., ♂ lateral