Orthocladius

Kong, Fanqing, Saether, Ole A. & Wang, Xinhua, 2012, A review of the subgenus Eudactylocladius (Diptera: Chironomidae) from China, Zootaxa 3341, pp. 46-53 : 52

Key to adult males of Orthocladius subgenus Eudactylocladius in China

1. Gonocoxite with two well defined lobes.................................................. O. ( E.) musester Saether

- Gonocoxite without such lobes.......................................................................... 2

2. Anal point bare...................................................................... O. ( E.) intectus sp. n.

- Anal point more or less setose........................................................................... 3

3. AR <0.5............................................................................. O. ( E.) brevis sp. n.

- AR> 0.8........................................................................................... 4

4. Gonocoxite with week and short microtrichia............................................. O. ( E.) fengensis sp. n.

- Gonocoxite with strong and long microtrichia.............................................................. 5

5. Gonostylus without inner projection, squama with 9–14 setae............................ O. ( E.) subletteorum Cranston

- Gonostylus with inner, preapical, triangular projection, squama with 13–20 setae............... O. ( E.) priomixtus Saether