Opeatocerata

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

Key to species of Opeatocerata (females)

(the following species are known only from male specimens: O. agudeloi , O. ampullaria , O. bare , O. chaetohypandrialis , O. cylindrophallus , O. hadrophallus , O. megalophallus , O. mourai , O. nhamunda , O. smithi , O. spinipennis , O. tanimboca and O. zuleideae )

1 Tergites with spots ( Figs 58 , 74 , 179 ).................................................................... 2

- Tergites without spots ( Figs 42 , 109 , 145 )................................................................. 6

2 Tergites with spots on lateral margins ( Câmara & Rafael, 2011, figs 17, 18).............. O. melanderi Câmara & Rafael

- Tergites with paramedian spots ( Figs 58 , 179 ).............................................................. 3

3 Tergites with paramedian subtriangular spots in dorsal view ( Fig. 60 )............................... O. cooperi Smith

- Tergites with paramedian subretangular spots in dorsal view ( Figs 77 , 179 )...................................... 4

4 Tergite 10 divided into two subtriangular plates ( Fig. 201 )............................. O. trilobata Câmara & Rafael

- Tergite 10 undivided ( Figs 78 , 182 )...................................................................... 5

5 Sternite 8 uniformly broad ( Fig. 78 ). Genital fork narrow at base ( Fig. 79 )....................... O. curvipenis sp. nov.

- Sternite 8 narrow in apical half ( Fig. 182 ). Genital fork wide at base ( Fig. 183 )....................... O. stubbsi Smith

6 Fore tarsomere 1–5 black ( Fig. 47 ). Sternite 8 with acute apex ( Fig. 150 )............... O. rubida (Wheeler & Melander)

- Fore tarsomere 4–5 black ( Figs 42 ). Sternite 8 with rounded apex ( Figs 44 , 111 ).................................. 7

7 Genital fork with arms fused at apex ( Fig. 112 ).................................................. O. lopesi Smith

- Genital fork with arms not fused at apex ( Figs 44, 46 )....................................... O. brasiliensis sp. nov.

Figures

FIGURES 58 – 63. Opeatocerata cooperi Smith, holotype ♀. 58. habitus, lateral view; 59. wing; 60. tergites 5 – 10, dorsal view; 61. terminalia, tergites 8, 10 and cerci, dorsal view; sternites 8 and 10, ventral view; 62. genital fork; 63. receptacle of spermatheca.

FIGURES 74 – 79. Opeatocerata curvipenis sp. nov., paratype ♀. 74. habitus, lateral view; 75. wing; 76. abdomen from tergite 4 to terminalia, lateral view; 77. abdomen from tergite 4 to terminalia, dorsal view; 78. terminalia, tergites 8 and 10, dorsal view; sternites 8, 10 and genital fork, ventral view; 79. genital fork.

FIGURES 179 – 184. Opeatocerata stubbsi Smith, 1989, paratype ♀. 179. habitus, lateral view; 180. wing; 181. abdomen from tergite 5 to terminalia, lateral view; 182. terminalia, tergites 8 and 10, dorsal view; sternites 8 and 10, ventral view; 183. genital fork; 184. receptacle of spermatheca.

FIGURES 42 – 46. Opeatocerata brasiliensis sp. nov., paratype ♀. 42. habitus, lateral view; 43. wing; 44. tergite 8, dorsal view; sternite 8 and genital fork, ventral view; 45. tergite 10, dorsal view; sternite 10, ventral view; 46. abdomen from tergite 5 to terminalia, dorsal view.

FIGURES 109 – 113. Opeatocerata lopesi Smith, paratype ♀. 109. habitus, lateral view; 110. abdomen from tergite 6 to terminalia, lateral view; 111. terminalia, tergites 8 and 10, dorsal view; sternites 8 and 10, ventral view; 112. genital fork. 113. receptacle of spermatheca.

FIGURES 145 – 151. Opeatocerata rubida (Wheeler & Melander), holotype ♀. 145. habitus, lateral view; 146. wing; 147. thorax, fore, hind legs and abdomen, lateral view; 148. tergites 5 – 10, dorsal view; 149. tergites 7, 8 and genital fork, dorsal view; 150. terminalia, tergites 8 and 10, dorsal view; sternites 8 and 10, ventral view; 151. receptacle of spermatheca.

FIGURES 195 – 202. Opeatocerata trilobata Câmara & Rafael, 2011, paratype ♂ (195 – 200) and paratype ♀ (201, 202). 195. tergites 4 – 8, dorsal view; 196, lobes of cerci, dorsal view; 197. terminalia, lateral view; 198. subepandrial sclerite and bacilliform sclerite, dorsal view; 199. ejaculatory apodeme, phallus and hypandrium, lateral view; 200. phallus, dorsal view; 201. tergites 8 and 10, dorsal view and sternites 8 and 10, ventral view; 202. genital fork.

FIGURES 47 – 57. Opeatocerata chaetohypandrialis sp. nov., holotype ♂. 47. habitus, lateral view; 48. wing; 49. abdomen from tergite 4 to terminalia, lateral view; 50. tergites 3 – 8, dorsal view; 51. terminalia, lateral view; 52. lobes of cerci, dorsal view; 53. descendant plate of anterior cercus and hypropoct, posterior view; 54. subepandrial sclerite and bacilliform sclerite, dorsal view; 55. ejaculatory apodeme, phallus and hypandrium, lateral view; 56. apex of phallus, ventral view; 57. hypandrium, ventral view.