Oxysarcodexia adunca 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 : 16

Oxysarcodexia adunca Lopes, 1975

( Figs 9–11 )

Oxysarcodexia adunca Lopes, 1975c: 475 ; Brazil, Espírito Santo, Conceição da Barra. Holotype male and five male paratypes in MNRJ; one male paratype in NMR.

Diagnosis. Length 7.0–9.0 mm. Postocular plate with pale golden pollinosity. Ocellar bristles smaller than upper frontal bristles. Thorax gray, sometimes yellowish gray, especially in humeral region. Two well-differentiated posterior and 2 smaller anterior post-sutural dorsocentrals; apical scutellar bristles absent. Legs blackish. Abdomen with mostly silvery pollinosity, but with golden pollinosity laterally on T4 and on entire extension of T5. T3 with 1 pair of lateral marginal bristles, T4 with 1 pair of median marginal and 1 pair 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 curved, expanded, obliquely cut apex, darker than median and basal parts, and dorsal subapical barb. Cercus with ventral bristles absent only in middle portion. Cerci with distal third as broad as middle part in posterior view; diverging. Pregonite with expanded base and sudden narrowing at apex, which is darker. Postgonite like pregonite but unicolorous. Distiphallus with distinct microscopic spines except for smooth ventroapical margin; with rounded apex and straight dorsal outline. Vesica symmetrical, with angular median projection of main branch; distal lobes well developed, filamentous and tapering, membranous, with spines only on ventral surface and pilosity in distal area.

Remarks. The cercus of this species is similar to that of O. cyaniforceps ( Hall, 1933) ( Fig. 100 ), but O. adunca ( Fig. 10 ) has microscopic spines apically on the distiphallus and vesica with larger apical portion of distal lobes, with spines on both dorsal and ventral surfaces and distal area with cuticular pilosity. Female unknown.

Distribution. NEOTROPICAL. Brazil (Amazonas, Bahia, Espírito Santo, Rio de Janeiro), Ecuador *.

Biology. Specimens have been collected from an urban forest in a trap baited with rotting beef lung, and on flower buds of Cassia sp. ( Fabaceae ), both in the Brazilian Amazon ( Carvalho-Filho et al. 2017).

Type material examined. Holotype ♂: Conceição da Barra , Esp. Santo, Brasil / P. C. Elias IV.72 / Holotype / Oxysarcodexia adunca n. sp. ♂ Det. H. S. Lopes / MNRJ 2232 [ MNRJ] // paratype ♂: Linhares , Espírito Santo, Brasil / P. C. Elias VI-72 / Paratype / Oxysarcodexia adunca ♂ n. sp. Det. H. S. Lopes [ MNRJ] // paratype ♂: Salvador Bahia, Brasil Vl 1951, D. Albuquerque / Paratype / Oxysarcodexia adunca ♂ n. sp. Det. H. S. Lopes [ MNRJ] // paratype ♂: H. Ebert / Magé, E. do Rio , Brasil VII.69 / Paratype / Oxysarcodexia adunca ♂ n.sp. Det. H. S. Lopes [ MNRJ] // paratype ♂: [ Brazil] Tinguá , Est. do Rio, S.F. A.VI-940 / Paratype / Oxysarcodexia adunca ♂ n. sp. Det. H. S. Lopes [ MNRJ] // paratype ♂: Conceição da Barra , Espírito Santo, Brasil / P. C. Elias, IV.72 / Paratype / Oxysarcodexia adunca n. sp. ♂ Det. H. S. Lopes [ MNRJ] // paratype ♂: Linhares, Espírito Santo, Brasil / P. C. Elias; VI-72 / paratypus / Oxysarcodexia adunca ; n. sp.; ♂; Det. H. S. Lopes / NRM-DIPT 0014213 [ NRM] .

Other material examined. [ ♂] ECUADOR: Napo Province, Yasuní National Park, Yasuní Research Station , 76°36′W 00°38′S; 3–20.XI.1998; T. Pape & B. Viklund / NRM-DIPT 0014473 [ NRM] .

Figures

FIGURES 6–14. Oxysarcodexia spp., males. 6–8. Oxysarcodexia admixta (Lopes) (Brazil, São Paulo, Jundiaí, LIE). 6. Habitus, lateral view.7.Terminalia, lateral view.8. Terminalia,posteriorview.9–11.Oxysarcodexia adunca Lopes (Ecuador, Napo Province, NRM). 9. Habitus, lateral view. 10. Terminalia, lateral view. 11. Terminalia, posterior view. 12–14. Oxysarcodexia afficta (Wulp) (Ecuador, Otavalo, NHMD). 12. Habitus, lateral view. 13. Terminalia, lateral view. 14. Terminalia, posterior view.

FIGURES 99–107. Oxysarcodexia spp., males. 99–101. Oxysarcodexia cyaniforceps (Hall), holotype (Panama, Barro Colorado Island, AMNH). 99. Habitus, lateral view. 100. Terminalia, lateral view. 101. Terminalia, posterior view. 102–104. Oxysarcodexia diana (Lopes) (Colombia, Antioquia, Medellín, CE-TdeA). 102. Habitus, lateral view. 103. Terminalia, lateral view. 104. Terminalia, posterior view. 105–107. Oxysarcodexia eberti Lopes & Tibana (Brazil, Mato Grosso, Chapada dos Guimarães, MNRJ). 105. Habitus, lateral view. 106. Terminalia, lateral view. 107. Terminalia, posterior view. Figs 99–101 by D. Grimaldi (AMNH).