Hemerodromiinae

Plant, Adrian R., 2010, Anaclastoctedon (Diptera: Empididae: Hemerodromiinae), A New Genus From Asia And Australia, Raffles Bulletin of Zoology 58 (1), pp. 15-25 : 19

Key to genera of Hemerodromiinae from Eastern Asia

The following key should enable recognition of east Asian genera of Hemerodromiinae . The Australian genera are unstudied and poorly understood and are excluded from the key.

1. Thorax distinctly elongate; mesonotum usually with only weak setae dorsally. Laterotergite without setae. Stylus seldom longer than postpedicel. Male terminalia not reflexed anteriorly over abdomen [ Hemerodromiini ] ................................................. 2

– Thorax rather quadrate; mesonotum usually with strong setae, at least anteriorly. Laterotergite with setae. Stylus always longer than postpedicel. Male terminalia reflexed anteriorly over abdomen [ Chelipodini ] ................................................ 3

2. Cell dm present ...................................... Chelifera Macquart

– Cell dm absent ................................... Hemerodromia Meigen

3. Vein M linear. Antenna with stylus lacking basal article. Male cercus greatly enlarged ............................................................ ................................................... Anaclastoctedon , new genus

– Vein M forked. Antenna with basal article to stylus. Male cercus not greatly enlarged .............................................................. 4

4. Anal vein absent; CuA 2 reaching (or almost reaching) margin; cells br and bm more or less equal in length, quadrate apically with crossveins r-m and bm-cu in line or nearly so ............... ......................................... Achelipoda Yang, Zhang & Zhang

– Anal vein present (if sometimes weak); CuA 2 not reaching margin; cell br distinctly longer than bm, crossveins closing them not in line and bm produced posteroapically ............. 5

5. Cell dm open (crossvein dm-cu absent) ................................. ......................................................... Phyllodromia Zetterstedt

– Cell dm closed (crossvein dm-cu present) .............................. ................................................................ Chelipoda Macquart