Osmylus species

Wang, Yongjie & Liu, Zhiqi, 2010, New species of Osmylus Latreille from Henan, China (Neuroptera: Osmylidae), Zootaxa 2363 (1), pp. 60-68 : 61

Key to Osmylus species from China (males):

1. 9 th tergite with a distinct dorsal projection ................................................................................................................... 2.

- 9 th tergite without the distinct dorsal projection or with a very short dorsal projection .............................................. 5.

2. Forewing relatively slightly narrow, veins with irregular pale and dark segments ...................... O. lucalatus sp. nov.

- Forewing broad, membrane dull hyaline ..................................................................................................................... 3.

3. Projection of 9 th tergite short and fingerlike, gonarcus with two triangular posterioventral processes .......................... ...................................................................................................................................................... O. biangulus sp. nov.

- Projection of 9 th tergite long, gonarcus only with one ventral process ........................................................................ 4.

4. Projection of 9 th tergite columniform, paramere arciform laterally. ................................... O. pachycaudatus sp. nov.

- Projection of 9 th tergite subulate laterally, paramere curved into C-shape laterally ................ O. bipapillatus sp. nov.

5. Distal part of gonarcus flat and quadrate, with a anteroventral processus .................................... O. fuberousus Yang

- Distal part of gonarcus triangular ................................................................................................................................ 6.

6. Distal part of gonarcus with a mastoid processus................................................................ O. xizangensis Yang et al.

- Distal part of gonarcus protruded inconspicuously ..................................................................................................... 7.

7. Distal part of gonarcus forming a large triangular sclerite ........................................................... O. wuyishanus Yang

- Distal part of gonarcus forming a narrow and small sclerite ............................................................... O. conacus Yang