Opeatocerata

Câmara, J. T. & Rafael, J. A., 2014, Revision of Opeatocerata Melander, 1928 (Diptera: Empididae: Empidinae), Zootaxa 3846 (4), pp. 502-546 : 504-505

Key to species of Opeatocerata (males)

(the following species are known only from female specimens: O. cooperi and O. rubida )

1 Tergites with brown to black spots ( Figs 3, 47, 64, 90, 123, 170, 185, 195, 203)................................... 2

- Tergites without spots ( Figs 8, 17, 26, 33, 80, 100,107, 114, 129, 138, 152, 161).................................. 9

2 Tergites with paramedian spots occupying half or more than half of the tergites ( Figs 64, 90, 170, 195, 203)............ 3

- Tergites with paramedian spots occupying less than half of the tergites ( Figs 47, 123, 185).......................... 7

3 Phallus long, ending well beyond the hypandrium apex in lateral view ( Figs 72, 209).............................. 6

- Phallus short, ending before or just beyond the hypandrium apex in lateral view ( Figs 98, 178, 199)................... 4

4 Phallus with trilobate apex ( Figs 199, 200)......................................... O. trilobata Câmara & Rafael

- Phallus with a single lobe apically ( Figs 98, 178)........................................................... 5

5 Tergites with paramedian subtriangular spots in dorsal view ( Fig. 93)........................ O. hadrophallus sp. nov.

- Tergites with paramedian subretangular spots in dorsal view ( Fig. 173).............................. O. stubbsi Smith

6 Phallus curved down ( Fig. 72). Epandrial lobe acuminate at apex ( Fig. 68)....................... O. curvipenis sp. nov.

- Phallus curved up ( Fig. 209). Epandrial lobe truncate at apex ( Fig. 205)......................... O. zuleideae sp. nov.

7 Anterior cercus with reclinate dorsal projection in lateral view ( Fig. 51). Posterior cercus without dorsal projections ( Fig. 52). Subepandrial sclerite V-shaped in dorsal view ( Fig. 54)............................... O. chaetohypandrialis sp. nov.

- Anterior cercus with proclinate dorsal projection in lateral view ( Figs 124, 189). Posterior cercus with a dorsal triangular pro- jection ( Figs 125, 190). Subepandrial sclerite U-shaped in dorsal view ( Fig. 192).................................. 8

8 Tergites with paramedian suboval spots in dorsal view ( Fig. 188). Epandrial lobe slightly bilobate in lateral view ( Fig. 189). Phallus with a subapical dorsal spine-like projection ( Fig. 193)................................ O. tanimboca sp. nov.

- Tergites brown on lateral margin, without paramedian spots in dorsal view ( Fig. 123). Epandrium with a single lobe in lateral view ( Fig. 124). Phallus without a subapical spine-like projection ( Fig. 126).............. O. melanderi Câmara & Rafael

9 Phallus without dorsal appendix ( Figs 88, 121, 144)........................................................ 10

- Phallus with dorsal appendix ( Figs 15, 24, 32, 40, 55, 107, 136, 159, 167)...................................... 12

10 Tergite 8 undivided ( Fig. 83). Posterior cercus without dorsal projection ( Fig. 78)............ O. cylindrophallus sp. nov.

- Tergite 8 divided in two plates ( Fig. 4). Posterior cercus with a basal pointed dorsal projection ( Figs 118, 141)......... 11

11 Subepandrial sclerite longer than bacilliform sclerite in dorsal view ( Fig. 120). Posterior cercus with a dorso-median subtrian- gular projection ( Fig. 118)......................................................... O. megalophallus sp. nov.

- Subepandrial sclerite shorter than bacilliform sclerite in dorsal view ( Fig. 143). Posterior cercus without a dorso-median pro- jection ( Fig. 141).................................................................... O. nhamunda sp. nov.

12 Phallus with a dorsal subbasal appendix ( Figs 15, 136)..................................................... 13

- Phallus with a dorsal subapical appendix ( Figs 24, 32, 40, 55, 107, 159, 167).................................... 14

13 Anterior cercus with dorsal pro and reclinate projections in lateral view ( Figs 132). Phallus without ventral appendix ( Fig. 136)..................................................................................... O. mourai sp. nov.

- Anterior cercus with dorsal proclinate projection in lateral view ( Fig. 11). Phallus with subapical ventral appendix ( Fig. 15)...................................................................................... O. agudeloi sp. nov.

14 Phallus with wide dorsal subapical appendix ( Figs 24, 32, 40, 55)............................................. 15

- Phallus with narrow dorsal subapical appendix ( Figs 107, 159, 167)........................................... 17

15 Posterior cercus pointed at apex in lateral view ( Figs 20) and without dorsal projections ( Fig. 21).... O. ampullaria sp. nov.

- Posterior cercus rounded at apex in lateral view ( Figs 28, 36) and with a pointed dorsal projection ( Figs 29, 37)........ 16

16 Anterior cercus with proclinate dorsal projection in lateral view ( Fig. 46). Subepandrial sclerite longer than bacilliform sclerite in dorsal view ( Fig. 39).............................................................. O. brasiliensis sp. nov.

- Anterior cercus with reclinate dorsal projection in lateral view ( Fig. 28). Subepandrial sclerite shorter than bacilliform sclerite in dorsal view ( Fig. 31)................................................................... O. bare sp. nov.

17 Posterior cercus with a basal pointed and a median subtriangular projections ( Fig. 104).................. O. lopesi Smith

- Posterior cercus without dorsal projections ( Figs 156, 164).................................................. 18

18 Phallus with lateral spines ( Fig. 168). Epandrial lobe with rounded apex in lateral view ( Fig. 163).... O. spinipenis sp. nov.

- Phallus without lateral spines ( Fig. 159). Epandrial lobe with truncated apex in lateral view ( Fig. 155).... O. smithi sp. nov.