Oxysarcodexia ibera Dufek & Mulieri, 2017

Souza, Carina Mara De, Pape, Thomas & Thyssen, Patricia Jacqueline, 2020, Oxysarcodexia Townsend, 1917 (Diptera: Sarcophagidae) - a centennial conspectus, Zootaxa 4841 (1), pp. 1-126 : 62-63

Oxysarcodexia ibera Dufek & Mulieri, 2017

( Figs 142–144 )

Oxysarcodexia ibera Dufek & Mulieri, 2017: 919 ; Argentina, Corrientes. Holotype male (examined from photographs) and five male paratypes in MACN; seven male paratypes in UNNE.

Diagnosis. [Based on the original description ( Dufek & Mulieri 2017) and on photographs provided by Dr. Pablo R. Mulieri (MACN).] Male. Length 6.4–8.5 mm. Postocular plate with golden pollinosity. Ocellar bristles well developed. Thorax with silvery pollinosity. Four well-differentiated post-sutural dorsocentral bristles. Apical scutellar bristles absent. Legs blackish. Abdominal T1+2–T4 with silvery pollinosity, contrasting with the golden pollinosity of T5. T3 with 3 pairs of lateral marginal bristles, T4 with 3 pairs of lateral marginal bristles and with median marginal bristles (although the original description does not mention how many). ST5 with deep median V-shaped cleft, and scattered fine bristles on arms. Cercus slightly sinuous in lateral view with pointed obliquely cut apex and dorsal subapical barb, and, in posterior view, with a preapical pointed protuberance. Cercus with bristles ventrally in apical third. Cerci with distal third view broader than middle part in posterior view; parallel and with a distinct constriction mid length. Pregonite with expanded base, gradually narrowing to apex, which is darker. Postgonite with expanded base, suddenly narrowing to apex; unicolorous. Distiphallus with smooth ventroapical margin, square apex and dorsal sinuous outline. Juxta with lateral membranous folds, surface covered with microtrichia, and anterior juxtal margin serrated, with broad flake-like sclerotizations. Vesica symmetrical; distal lobes well developed, partially sclerotized (i.e., well sclerotized dorsally and membranous distally), large and sharply angled in lateral view.

Remarks. Oxysarcodexia ibera ( Fig. 143 ) may be considered closely related to O. nitida ( Fig. 196 ) due to similarities in phallic structures, especially the juxta, which does not fold backwards posteriorly, and in the similar dorsal part of the vesica. These two species can be separated by the anterior juxtal margin, which is conspicuous, broad, and flake-like in O. ibera ( Dufek & Mulieri 2017) . Female unknown. See also remarks under O. ariozanoi sp. n.

Distribution. NEOTROPICAL. Argentina (Chaco, Corrientes, Formosa).

Biology. Unknown, although the original description mentions use of Van Someren-Rydon traps baited with rotten squid and of a hand net for collection of this species ( Dufek & Mulieri 2017).

Type material examined. No specimens were examined directly, but photographs of the holotype were provided by courtesy of Dr. Pablo R. Mulieri ( MACN) .

Figures

FIGURES 139–147. Oxysarcodexia spp., males. 139–141. Oxysarcodexia grandis Lopes (Colombia, Antioquia, Medellín, Cola del Zorro, CE-TdeA). 139. Habitus, lateral view. 140. Terminalia, lateral view. 141. Terminalia, posterior view. 142–144. Oxysarcodexia ibera Dufek & Mulieri (Argentina, MACN). 142. Habitus, lateral view. 143. Terminalia, lateral view. 144. Terminalia, posterior view. 145–147. Oxysarcodexia inflata Lopes, paratype (Brazil, Maranhão, Rosário, Igarapé Paraqueú, MNRJ). 145. Habitus, lateral view. 146. Terminalia, lateral view. 147. Terminalia, posterior view. Figures 142–144 by P.R. Mulieri (MACN).

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.