Myrmecolax, Westwood, 1861

Lu, Xiumei & Liu, Xingyue, 2014, Discovery of the twisted-wing parasite family Myrmecolacidae (Insecta: Strepsiptera) from China, with description of two new species of the genus Myrmecolax Westwood, 1861, Zootaxa 3881 (4), pp. 385-395 : 394

Key to males of Myrmecolax from Asia

1. Distal end of detached vein to radius clearly bifurcated, with anterior branch often directed to wing base environing distal end of radius............................................................................................. 2

- Distal end of detached vein to radius simple or rather slightly bifurcated, with short anterior branch................... 10

2. Flabellum of 3 rd antennomere reaching about basal 1/3 of 7 th antennomere......................................... 3

- Flabellum of 3 rd antennomere reaching at least middle of 7 th antennomere......................................... 4

3. Length ratio of 6 th and 7 th segments 1:2; body length 1.75 mm. Indonesia.............. M. flagellatus ( de Meijere, 1908)

- Length ratio of 6 th and 7 th segments 1:1.51; body length 1.85 mm. Malaysia (N. Borneo) .................................................................................................... M. danielssoni Kathirithamby, 1994

4. Flabellum of 3 rd antennomere reaching middle of 7 th antennomere............................................... 5

- Flabellum of 3 rd antennomere extending beyond middle of 7 th antennomere........................................6

5. Detached vein R 3 distally forked. India............................. M. pierci ( Chattopadhyay & Chaudhuri, 1980)

- Detached vein R 3 not forked. Thailand................................. M. chantaneeae Kifune & Hirashima, 1979

6. Dorsal process of aedeagus short, inconspicuous. Philippines............................... M. furcatus Bohart, 1951

- Dorsal process of aedeagus long, almost as long as ventral projection............................................7

7. Body of aedeagus straight. China..................................................... M. pachygnathus sp. nov.

- Body of aedeagus curved...............................................................................8

8. Body of aedeagus arcuately curved; body length 1.86 mm. China............................... M. arcuatus sp. nov.

- Body of aedeagus curved at basal 1/3; body length 1.00– 1.28 mm ............................................... 9

9. Basal 1/3 of aedeagus broad; length of 5 th segment shorter than 6 th segment; body length 1.005 mm. India........................................................................................... M. plantipes ( Chaudhuri, 1978)

- Basal 1/3 of aedeagus thin; length of 5 th segment longer than 6 th segment; body length 1.17–1.28 mm. Malaysia (N. Borneo) ........................................................................ M. malayensis Kathirithamby, 1993

10. Flabellum of 3 rd antennomere reaching at most base of 7 th antennomere.......................................... 11

- Flabellum of 3 rd antennomere reaching at least middle of 7 th antennomere........................................ 12

11. Postscutellum short, slightly longer than wide. Philippines........................... M. philippinensis Bohart, 1941

- Postscutellum long, about 1.5 times as long as wide. Philippines......................... M. culionensis Bohart, 1951

12. Aedeagus without dorsal process. Sri Lanka.......................................... M. nietneri Westwood, 1861

- Aedeagus with prominent dorsal process. Phillippines ...................................... M. rossi Bohart, 1951