Scatellini

Costa, Daniel N. R., Savaris, Marcoandre, Marinoni, Luciane & Mathis, Wayne N., 2016, Two new, brachypterous Limnellia species from the Venezuelan Andes (Diptera: Ephydridae), Zootaxa 4144 (3), pp. 301-315 : 303

Key to Neotropical Genera and Subgenera of Scatellini Wirth and Stone

1. Lateroclinate fronto-orbital seta 0–1....................................................................... 2

- Lateroclinate fronto-orbital setae 2........................................................................ 3

2. Costa short, extended to vein R4+5........................................................... Scatophila Becker

- Costa long, extended to vein M............................................................. Limnellia Malloch

3. Genal seta large, conspicuous. Wing usually with distinct to obscure pale spots ( Scatella Robineau-Desvoidy )............ 4

- Genal seta greatly reduced or lacking. Wing without pale spots.................................. Haloscatella Mathis

4. Postsutural supra-alar seta subequal in length to postalar seta.......................... Scatella ( Parascatella Cresson )

- Postsutural supra-alar seta reduced, 1/2 length of postalar seta.................................................. 5

5. Dorsocentral setae 2 (0+2), anterior seta postsutural.......................................................... 6

- Dorsocentral setae 2–3 (1+1, 1+2), anterior seta presutural..................................................... 7

6. Wing generally darkly infuscate, with evident pattern of white spots; dorsum of scutellum bare; setae of midcoxa short; male midfemur lacking row of setae...................................... Scatella ( Scatella Robineau-Desvoidy ), in part

- Wing lightly infuscate, faintly brown, but lacking pattern of white spots; dorsum of scutellum setose, more so toward lateral margins; midcoxa with row of long setae along anteroventral surface; male midfemur with row of 7–10 long, stout setae near middle of posteroventral surface, setae longer than width of femur...................... Scatella ( Teichomyza Macquart )

7. Wing micropterous, subequal to length of hindbasitarsus; pedicel with spine-like, dorsal seta subequal to length of arista.................................................................................... Scatella ( Synhoplos Lamb )

- Wing stenopterous to macropterous, if reduced, much longer than length of hindbasitarsus; seta of pedicel if present much shorter, not more than 1/2 length of arista................................................................... 8

8. Only 1 well-developed acrostichal seta present, inserted at suture........................ Scatella ( Neoscatella Malloch )

- Acrostichal setae generally weak, short, continuing in a postsutural row to base of scutellum.......................................................................................... Scatella ( Scatella Robineau-Desvoidy ), in part