Oxysarcodexia vittata ( Walker, 1836 )

Souza, Carina Mara De, Pape, Thomas & Thyssen, Patricia Jacqueline, 2020, Oxysarcodexia Townsend, 1917 (Diptera: Sarcophagidae) - a centennial conspectus, Zootaxa 4841 (1), pp. 1-126 : 108

Oxysarcodexia vittata ( Walker, 1836)

( Figs 278–280 )

Sarcophaga vittata Walker, 1836: 353 ; South America. Lectotype female [designated by Lopes (1976: 632)] in NHMUK (not examined). [Described from one or more syntype (s), with no indication of sex; according to Aldrich (1930: 14) this type material was “Not found in British Museum”, but it was probably overlooked or unrecognized because Lopes (1976) examined what is unquestionably an original Walker syntype; we consider Lopes (1976) to have made a lectotype designation in accordance with Article 74.5 of the Code, having “unambiguously selected a particular syntype to act as the unique name-bearing type” of the nominal taxon Sarcophaga vittata Walker, 1836 .]

Oxysarcodexia titubata Lopes, 1946a: 459 ; Brazil, Paraná, Foz do Iguaçu. Holotype male, female allotype, 16 male paratypes and four female paratypes in MNRJ; one male paratype in NHMUK (none examined).

Diagnosis. Male. Length 7.0–9.0 mm. Postocular plate with golden pollinosity. Ocellar bristles well developed. Thorax with golden pollinosity. Three well-differentiated post-sutural dorsocentral bristles posteriorly, and a smaller bristle can be present among these.Apical scutellar bristles present. Legs blackish.Abdomen with silvery pollinosity, although T5 partly with golden pollinosity. T4 with 2 pairs of lateral marginal bristles. ST5 with deep median cleft with margins almost parallel and with pilosity and bristles at apex of arms. Cercus sinuous in lateral view, with pointed obliquely cut apex. Cercus with bristles ventrally over full length. Cerci with distal third narrower than middle part in posterior view; diverging. 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 smooth ventroapical margin, square/oblong apex, sinuous dorsal outline, short and small ventroapical projections, lateral lobes, a medium-sized dorsoapical swelling and lateroapical expansions. Vesica symmetrical; distal lobes well developed, squared, sclerotized and without spines.

Remarks. See remarks under O. ariozanoi sp. n., O. augusta , O. fraterna and O. nitida . The female of O. vittata is characterized by having T7 undivided, dorsally sclerotized and with a large membrane connecting it to T5; T8 represented by two elongate plates without bristles; ST6 larger than ST5 and with bristles along posterior margin; ST7 wider than long and connected to ST8 by an extensive membranous area ( Lopes 1946a). According to the description provided by Lopes (1946a), this species can be placed in the group of females with an undivided T7 proposed by Tibana & Mello (1985).

Distribution. NEOTROPICAL. Brazil (Mato Grosso, Mato Grosso do Sul, Rio de Janeiro, Paraná , Santa Catarina , São Paulo *).

Biology. This species is attracted to human feces and was reared in the laboratory by Lopes (1973b), who provided no further information on its development.

Material examined. [♂] BRAZIL: São Paulo, Jundiaí, Serra do Japi; 06.I.2012; M. D. Grella / Oxysarcodexia 01; Jundiaí-SP; 06/01/2012 / O. titubata [ LIE] // [♂] Brasilien [Brazil], Nova Teutonia, 27°11′B 52°23′L, Fritz Plaumann / Xarcophaga titubata (Lopes) / Oxysarcodexia [ NHMD] // [♂] Holotype / IGUASSÚ Paraná [Brazil] XII.941 Com. E.N.V / Oxysarcodexia titubata [no italics] Lopes Det. H. S. Lopes / MNRJ 2309 [typed vertically on left side of label] [ MNRJ].

Figures

FIGURES 274–283. Oxysarcodexia spp., males. 274–277. Oxysarcodexia villosa Lopes (Brazil, Pará, Belém, MNRJ). 274. Habitus, lateral view (flipped horizontally to facilitate comparisons). 275. Terminalia, lateral view. 276. Terminalia, anterior view. 277. Terminalia, posterior view. 278–280. Oxysarcodexia vittata (Walker) (278: Brazil, Santa Catarina, Nova Teutonia, NHMD; 279–280: Brazil, São Paulo, Jundiaí, LIE). 278. Habitus, lateral view. 279. Terminalia, lateral view. 280. Terminalia, posterior view. 281–283. Oxysarcodexia wygodzinskyi Lopes & Tibana (Argentina, MACN). 281. Habitus, lateral view. 282. Terminalia, lateral view. 283. Terminalia, posterior view. Figs 281–283 by P.R. Mulieri (MACN).