Key to the species of Bradysiopsis

1. Gonostylus bulbously on inner side in apical third, with 7–8 subapical spines and without longer whiplash-like bristles..... 2

- Gonostylus strongly pointed towards apex, with 2–4 subapical spines and a few long whiplash-like bristles.............. 3

2 Gonostylus long and thin, three times longer than wide................................. .. Br. vittata (Meigen) (Fig. 5)

- Gonostylus at most twice as long as wide, broader in apical half........................... Br. praevittata sp. n. (Fig. 2)

3 Gonostylus short and compact, at most 1.5 times longer than wide, with 3–4 subapical spines.................................................................................................... Br. vittigera (Zetterstedt) (Fig. 6)

- Gonostylus at least two times longer than wide.............................................................. 4

4 Gonostylus thin and nearly straight, with 2 subapical spines............................. Br. subvittigera sp. n. (Fig. 4)

- Gonostylus curved in apical half, with 2–3 subapical spines.................................................... 5

5 Gonostylus with 2 equal subapical spines on small bases.............................. Br. praevittigera sp. n. (Fig. 3)

- Gonostylus with 3 subapical spines, the lowest spine on larger base and distinctly curved.... .. Br. postvittigera sp. n. (Fig. 1)