Oxysarcodexia cyanea Lopes, 1975

Souza, Carina Mara De, Pape, Thomas & Thyssen, Patricia Jacqueline, 2020, Oxysarcodexia Townsend, 1917 (Diptera: Sarcophagidae) - a centennial conspectus, Zootaxa 4841 (1), pp. 1-126 : 47

Oxysarcodexia cyanea Lopes, 1975

( Figs 96–98 )

Oxysarcodexia cyanea Lopes, 1975d: 475 ; Dominica, Trafalgar Falls . Holotype male (examined from photographs), female allotype and 32 female paratypes in USNM.

Diagnosis. [Based on the original description by Lopes (1975d) and on photographs provided by Dr. Torsten Dikow (USNM).] Male. Length 9.0 mm. Back of head gray and thorax gray. Ocellar bristles well developed. Two welldifferentiated posterior and 2 smaller anterior post-sutural dorsocentrals. Apical scutellar bristles absent. Legs blackish. Abdomen grayish with silvery pollinosity, T4 without median marginal bristles. ST5 reddish brown. Cercus covered with many short yellow setulae, slightly curved at apex, which is blackish and obliquely cut. Cercus with bristles ventrally over full length. Cerci with distal third as broad as middle part in posterior view; parallel and with enlarged and blackish apices. Pregonite with expanded base, gradually narrowing to apex, which is expanded; unicolorous. Postgonite unicolorous. Distiphallus in lateral view with smooth ventroapical margins, conical apex; dorsal outline sinuous and with a small membranous area dorsally. Vesica large, symmetrical, partially membranous, with distal lobes bearing a few spines.

Remarks. The distiphallus of this species ( Fig. 97 ) is similar to that of O. zayasi Dodge, 1956 ( Fig. 291 ), but a notable difference is found in the cercus, which resembles that of O. orbitalis ( Fig. 205 ) and which in turn differs from O. cyanea by the distinctive distiphallus, conical in posterior view and with rounded distal lobes of the vesica. Oxysarcodexia cyanea can be distinguished from O. aurata ( Fig. 40 ) by the absence of a dorsoapical swelling of the distiphallus (referred to by Lopes (1975d) as a “large membrane on penis apex”). The female of O. cyanea has an undivided T7 ( Tibana & Mello 1985). The larvae of this species were described by Lopes (1975d).

Distribution. NEOTROPICAL. Dominica.

Biology. The original description mentions some specimens of O. cyanea collected on human feces and others collected in a Malaise trap, without further details ( Lopes 1975d).

Type material examined. No specimens were examined directly, but photographs of the holotype were provided by courtesy of Dr. Torsten Dikow ( USNM).

Figures

FIGURES 90–98. Oxysarcodexia spp., males. 90–92. Oxysarcodexia culmiforceps Dodge (Brazil, Minas Gerais, Extrema, LIE, except Fig. 92 from MACN). 90. Habitus, lateral view. 91. Terminalia, lateral view. 92. Terminalia, posterior view. 93–95. Oxysarcodexia culminata (Aldrich) (Puerto Rico, Ponce, Cerro de Punta, NRM). 93. Habitus, lateral view. 94. Terminalia, lateral view. 95. Terminalia, posterior view. 96–98. Oxysarcodexia cyanea Lopes, holotype (Dominica, Trafalgar Falls, USNM). 96. Habitus, lateral view. 97. Terminalia, lateral view. 98. Terminalia, posterior view. Figs 96–98 by T. Dikow (USNM); Fig. 92 by P.R. Mulieri (MACN).

FIGURES 284–292. Oxysarcodexia spp., males. 284–286. Oxysarcodexia xanthosoma (Aldrich) (Ecuador, Napo Province, NRM). 284. Habitus, lateral view. 285. Terminalia, lateral view. 286. Terminalia, posterior view. 287–289. Oxysarcodexia xon (Dodge), holotype (Panama, Canal Zone, Barro Colorado Island, UKAL). 287. Habitus, lateral view. 288. Terminalia, lateral view (flipped horizontally to facilitate comparisons). 289. Terminalia, posterior view. 290–292. Oxysarcodexia zayasi Dodge (Cuba, Las Villas Province, Trinidad, MNRJ). 290. Habitus, lateral view. 291. Terminalia, lateral view. 292. Terminalia, posterior view. Figs 287–289 by M. Engel (UKAL, now AMNH) and C. Chaboo (UKAL).

FIGURES 201–209. Oxysarcodexia spp., males. 201–203. Oxysarcodexia occulta Lopes (Brazil, São Paulo, Mogi Guaçu, LIE). 201. Habitus, lateral view. 202. Terminalia, lateral view. 203. Terminalia, posterior view. 204–206. Oxysarcodexia orbitalis Dodge, holotype (Martinique, Mont Pélé, USNM). 204. Habitus, lateral view. 205. Terminalia, lateral view. 206. Terminalia, posterior view. 207–209. Oxysarcodexia pallisteri Dodge, holotype (Peru, Machu Picchu, Pueblo Cusa, AMNH). 207. Habitus, lateral view. 208. Phallic complex (flipped horizontally to facilitate comparisons). 209. Cercus and surstylus, lateral view (flipped horizontally to facilitate comparisons). Figs 204–206 by N.E. Woodley (USNM) and T. Dikow (USNM); Figs 207–208 by D. Grimaldi (AMNH); Fig. 209 adapted from Lopes (1975c).

FIGURES 33–41. Oxysarcodexia spp., males. 33–35. Oxysarcodexia augusta Lopes (Brazil, Minas Gerais, Belo Horizonte, NRM). 33. Habitus, lateral view. 34. Terminalia, lateral view. 35. Terminalia, posterior view. 36–38. Oxysarcodexia aura (Hall) (Brazil, Minas Gerais, Pirapora, MNRJ, except 37–38 from MACN). 36. Habitus, lateral view. 37. Terminalia, lateral view. 38. Terminalia, posterior view. 39–41. Oxysarcodexia aurata (Macquart) (Society Is., Tahiti Punaaina, NHMD). 39. Habitus, lateral view. 40. Terminalia, lateral view. 41. Terminalia, posterior view. Figs 37–38 by P.R. Mulieri (MACN).