Orosarcophaga grisea (Lopes, 1982)

(Figs. 1–2)

Oxyvinia grisea Lopes, 1982: 290 (description of male). Type locality: Peru, Dept. Junin, Naranjal. Other references: Pape (1996: 272; world catalog).

Type material. 1 ♂ Holotype [American Museum of Natural History]: Peru, 1000 m, Estancia, Naranjal, San Ramon, Dept. Junin, 20-27. VII.65, P. & B. Wygodzinsky. H.S. Lopes Det.

Examined material. 1 ♂ MNRJ-ENT1-32437: BRASIL, AM, Manaus, ZF-2, Km14, 02º35.21’S 60º09.55’W 16-31.viii.2017 6m malaise trap 24m, J.A. Rafael & F.F. Xavier; 1 ♂ [without collection number]: BRASIL, Rio de Janeiro, Petrópolis, E. do Rio, vi/1969, H. S. Lopes col. (MNRJ) [lost] (SM1).

Redescription

The following characters are added to the original description (Lopes, 1982):

Abdomen. Sternite 5 yellow, inner margin with a pair of cushion-like protuberances covered with small strong setae (Fig. 2G arrow), outer margin with long sparse setae (Fig. 3D).

Terminalia. Brown. Surstylus with narrow base and irregular margin (Fig. 3A); cercus with long setae on proximal half and small, sparsely arranged apical setae; apex blackish, truncate in lateral view (Fig. 3A); pregonite curved, C-shaped, with short dorsal setae near base and apex bifurcate (Figs. 2D–E); postgonite slightly curved, anterior margin serrated along distal half, median setae long and exceeding the apex (Figs. 2B, 3A); basiphallus and distiphallus distinctly separate (Fig. 3A); basiphallus with a dorsal pair of longitudinal keels and ventral surface with a large membranous area forming lateral folds (Fig. 3A); median stylus with a basal pair of elongated spinous processes (capitis sensu Buenaventura & Pape 2018) (Fig. 3B); lateral styli strongly sclerotized with spinose apex and an elongated base that extends laterally towards the paraphallus wall (Figs. 2A–B, 3B); large vesica with a proximal sclerotized part with membranous margin and a distal membranous and ornamented part (Figs. 2C, F, 3C); juxta tripartite and sclerotized (Figs. 2C, 3B).

Female. Unknown.

Biology. Unknown.

Distribution. Brazil [Amazonas, Rio de Janeiro], Peru [Junín Region].

Remarks. O. grisea was originally described by Lopes (1982), and, so far, our knowledge of this species had been limited to the illustrations of the holotype produced by the same author (Lopes 1982: figs 33-36). Comparing the holotype to the newly identified specimens, we observed slight differences, particularly in the pregonite, sternite 5 and vesica (Fig. 2A–F). We attribute these differences to different clearing methods of the terminalia (e.g., KOH or lactic acid), as well as to the different position of the structures during the photography. Additionally, the original description did not include descriptions of the lateral and median styles. We have identified that the sclerotized plate previously interpreted as the “lateral plate” by Lopes (1982) corresponds to a sclerotized region within the vesica (Fig. 2F, arrow).

The holotype of O. grisea was collected in Peru, and we herein expand its distribution to the Brazilian Amazon Forest and Atlantic Rainforest biomes, both of which are Neotropical rainforests. This indicates that, up to this point, this species has only been recorded in rainforests.