Hemerodromiinae

Plant, Adrian R., 2009, Revision of the east Asian genus Achelipoda Yang, Zhang & Zhang, 2007 (Diptera: Empididae: Hemerodromiinae) including designation of a neotype for Achelipoda pictipennis (Bezzi, 1912) and descriptions of six new species, Zootaxa 2020, pp. 37-50 : 39-40

Key to East Asian genera of Hemerodromiinae

1. Postpedicel hardly longer than wide, stylus as long or shorter. Thorax distinctly elongate; mesonotum with only weak setae dorsally, anterior dorsocentral always very weak. Laterotergite without katatergital setae. Male terminalia not reflexed anteriorly over abdomen [ Hemerodromiini ]........................................................................................ 2

- Postpedicel usually longer than wide, stylus always longer. Thorax rather quadrate; mesonotum usually with strong setae (if anterior dorsocentrals weak, thorax is distinctly quadrate). Laterotergite with katatergital setae. Male terminalia reflexed anteriorly over abdomen [ Chelipodini ].................................................................................................. 3

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

- Cell dm absent ........................................................................................................................... Hemerodromia Meigen

3. Anal vein absent; CuA2 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); CuA2 not reaching margin; cell br distinctly longer than bm, crossveins clos- ing them not in line and bm produced posteroapically ................................................................................................. 4

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

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