Thaumaleidae

Wagner, Rüdiger & Bellstedt, Ronald, 2015, Thaumaleidae (Diptera) collected by the late Dr. W. Joost in the Caucasus Mountains, Zootaxa 4039 (3), pp. 483-488 : 488

Key to male Thaumaleidae from Caucasus Mountains

1 Tergite 9 approx. 2 times longer than high ( Fig. 2 ); gonocoxite with double-headed basal inner appendage ( Fig. 3 ); gonostylus without apical tooth; parameres in dorsal view curved outward, slightly sinuous with apical part strongly bent in lateral view ( Fig. 1 )........................................................................................................... T. biacuminata sp.n.

- Tergite 9 approximately as long as high, gonocoxite with simple medial basal appendage; gonostylus with apical teeth, parameres of different shape .............................................................................................................................. 2

2 Tergite 9 subtriangular, front edge linear, no protrusions along ventral edge ( Fig. 6 ), gonostylus with 2 apical teeth, parameres consistently bent ( Fig. 5 ) .................................................................................... T. martinovsky Joost 1979

- Front edge of tergite 9 convex ( Fig. 9 ), ventral edge with 3 small protrusions on both sides ( Fig. 10 ); gonostylus with 2 apical and 1 subapical teeth ( Fig. 10 ); parameres in ventral view medially parallel with mediolateral edge, in lateral view strong, with short hook-shaped tip ....................................................................................... T. monikae sp.n.

Figures

FIGURES 1 – 4. Thaumalea biacuminata sp. n. 1 — ♂ genitalia ventral view; 2 — ♂ genitalia lateral view; 3 — ♂ gonocoxite with paramere and gonostylus, ventral view; 4 — ♀ subgenital plate ventral view [Scale bar 0.1 mm]

FIGURES 5 – 8. Thaumalea martinovskyi Joost 1979 5 — ♂ genitalia ventral view; 6 — ♂ genitalia lateral view; 7 — ♀ genitalia lateral view; 8 — ♀ genitalia ventral view;

FIGURES 9 – 12. Thaumalea monikae sp. n. 9 — ♂ genitalia ventral view; 10 — ♂ genitalia lateral view; 22 — ♀ genitalia lateral view; 12 — ♀ genitalia ventral view [Scale bar 0.1 mm].