Oxysarcodexia morretesi Tibana & Mello, 1983

Souza, Carina Mara De, Pape, Thomas & Thyssen, Patricia Jacqueline, 2020, Oxysarcodexia Townsend, 1917 (Diptera: Sarcophagidae) - a centennial conspectus, Zootaxa 4841 (1), pp. 1-126 : 78-79

Oxysarcodexia morretesi Tibana & Mello, 1983

( Figs 192–194 )

Oxysarcodexia morretesi Tibana & Mello, 1983b: 279 ; Brazil, Paraná, São José dos Pinhais, Castelhanos. Holotype male and seven male paratypes in MNRJ.

Diagnosis. Male. Length 8.0–10.0 mm. Postocular plate with golden pollinosity. Ocellar bristles weakly developed. Thorax and abdomen with grayish pollinosity, T5 with golden pollinosity along the entire extension. Two welldifferentiated posterior and 3 smaller anterior post-sutural dorsocentrals. Apical scutellar bristles absent. Legs brownish. T3 with 2 pairs of lateral marginal bristles, T4 with 1 pair of median marginal and 3 pairs of lateral marginal bristles. ST5 with deep median cleft with margins almost parallel and with pilosity. Cercus straight in lateral view, with normal (i.e., as broad as median area), obliquely cut apex and with mediolateral margin bulging outward. Cercus with bristles ventrally in distal half. Cerci with distal third as broad as middle part in posterior view; parallel and with a distinct constriction mid length. Pregonite with expanded base, gradually narrowing to apex, which is darker than base. Postgonite with expanded base and sudden narrowing at apex; unicolorous. Distiphallus with ventromedial elongation, smooth ventroapical margin, rounded apex, straight dorsal outline and small “fingerlike” dorsoapical swelling. Vesica symmetrical, with angular median projection of main branch; distal lobes well developed, oblong, with a large median upwards projection, sclerotized and with spines only along margins.

Remarks. Similar to O. thornax due to the dorsoapical swelling of the distiphallus and the structure of the vesica. However, as also observed by Tibana & Mello (1983b), differences can be observed in the cercus (in O. morretesi with posterolateral margin slightly curved outwards and without a curved apex); distiphallus structures (in O. morretesi with membranous expansions extended ventrally and an enlarged median process with apical spines); and vesica (in O. morretesi with two narrow lateral plates and a conical central lobe between them) ( Figs 193 , 258 ). See also remarks under O. conclausa . Female unknown.

Distribution. NEOTROPICAL. Brazil (Rio de Janeiro, Paraná, São Paulo).

Biology. Unknown.

Type material examined. Holotype ♂: Castelhanos 29-VIII-36 / Lange de Morretes Coll. [illegible] 1936 / Castelhanos S. José dos Pinhais Paraná Brasil 29-VIII-36 / Holotype / Oxysarcodexia morretesi [no italics] Tibana e Mello 1982 / Oxysarcodexia morretesi [no italics] Det: TIBANA e MELLO H. S. Lopes / MNRJ 2246 [typed vertically on left side of label] [ MNRJ] // paratype ♂: Brazil, Município de Bertioga, S.P., 27–30 Nov. 72, B. V. Peterson / Paratype / Oxysarcodexia ♂ n.sp. near thornax Det. H. S. Lopes [ MNRJ].

Other material examined. [♂] Brazil, Municipio de Bertioga, SP, 27-30 Nov. 72, B. V. Peterson / Paratype / Oxysarcodexia ♂ n. sp. near thornax Det. H. S. Lopes [ MNRJ].

Figures

FIGURES 192–200. Oxysarcodexia spp., males. 192–194. Oxysarcodexia morretesi Tibana & Mello, paratype (Brazil, São Paulo, Bertioga, MNRJ). 192. Habitus, lateral view. 193. Terminalia, lateral view. 194. Terminalia, posterior view. 195–197. Oxysarcodexia nitida Soares & Mello-Patiu (Ecuador, Napo Province, NMR). 195. Habitus, lateral view. 196. Terminalia, lateral view. 197. Terminalia, posterior view. 198–200. Oxysarcodexia notata Soares & Mello-Patiu (Ecuador, Napo Province, NMR). 198. Habitus, lateral view. 199. Terminalia, lateral view. 200. Terminalia, posterior view.

FIGURES 254–263. Oxysarcodexia spp., males. 254–256. Oxysarcodexia terminalis (Wiedemann) (Argentina, MACN). 254. Habitus, lateral view. 255. Terminalia, lateral view. 256. Terminalia, posterior view. 257–259. Oxysarcodexia thornax (Walker) (Brazil, São Paulo, Campinas, LIE). 257. Habitus, lateral view. 258. Terminalia, lateral view. 259. Terminalia, posterior view. 260–263. Oxysarcodexia timida (Aldrich) (Venezuela, Aragua, NHMD). 260. Habitus, lateral view. 261. Terminalia, lateral view. 262. Distiphallus, anterior view. 263. Terminalia, posterior view. Figs 254–256 by P.R. Mulieri (MACN).