Chrysopilus vitreus, Santos, Charles Morphy D. & Amorim, Dalton De Souza, 2007

Santos, Charles Morphy D. & Amorim, Dalton De Souza, 2007, Chrysopilus (Diptera: Rhagionidae) from Brazil: redescription of Chrysopilus fascipennis Bromley and description of eleven new species, Zootaxa 1510, pp. 1-33 : 15-19

Chrysopilus vitreus sp. n.

Figures 43–51

Material. Holotype ɗ, BRAZIL, State of Amapá, Serra do Navio, 00º 53’S 52º 00’W, 11/X/1957, K. Lenko col. ( MZSP); paratypes: 2 Ψ, the same as holotype, but 14/X/1957 ( MZSP); 1 Ψ, idem but 25/X/1957, J. Lane col. ( MZSP).

Diagnosis. Maxillary palpus long, slightly enlarged distally; wing homogeneously hyaline, except for pterostigma; R2+3 reaching C far from R1, strongly curved distally toward apex; terminalia longer than wide; abdomen brown, with dark and silvery setae forming iridescent bands on tergites 1-5; female genital fork with proximal portion slightly cephalad, distal apodeme wide.

Male. Body length, 9.1–10.0 mm. Wing length, 5.8–6.0 mm. General color dark brown. Eyes dark brown, facets heterogeneous, ocellar tubercle grayish to brown, ocelli yellowish. Gena and clypeus brownish gray to yellow, clypeus bare. Antenna brownish yellow to brown; scape with setae, half the length of pedicel; pedicel oval; first flagellomere oval, same size of pedicel ( Figure 44 ). Maxillary palpus long, slightly enlarged distally ( Figure 45 ). Proboscis and labella brownish yellow. Occiput gray, with dark setae.

Thorax brown, with silvery iridescent setae; scutellum lighter than scutum, with long, dark setae and short, golden setae. Halter bare, stem dark brown, tip yellow. Coxae brown, femora and tibiae yellowish. Wing homogeneously hyaline, except for pigmented pterostigma ( Figure 43 ); R2+3 reaching C far from R1, strongly curved distally toward apex; R4 forking with almost right angle, without short appendage, with slight distal curve; CuA2 and A1 fusing far from margin; crossvein m-m not so far from origin of M2.

Abdomen brown, dark and silvery setae on tergites, forming iridescent bands on tergites 1-5. Gonocoxite and gonostylus dark brown; gonocoxite longer than wide; gonostylus long, slender, and slightly rounded distally, covered with setae; aedeagus long; ejaculatory apodeme reaching base of terminalia; gonocoxal apodeme relatively short; lateral ejaculatory process slender, parallel to ejaculatory apodeme ( Figure 47 ); mesoanterior incision of tergite IX short ( Figure 48 ); cercus brown.

Female. Body length, 11.0– 11.3 mm. Wing length, 6.5–7.5 mm. Thorax and abdomen brownish yellow, with reddish abdominal membrane. Anterior margin of sternite VIII rounded, hypogynial valves with at least 10 long setae ( Figure 50 ); genital fork with anterior portion slightly cephalad, and distal apodeme wide (Figure 51); cercus two-segmented, distal segment suboval ( Figure 49 ); common spermathecal ducts short, spermathecal ducts long; spermathecae ovoid ( Figure 46 ).

Distribution. Chrysopilus vitreus is known only from the type-locality.

Etymology. The species name comes from the Latin word vitreus , for glossy, transparent, as a reference to the homogeneously hyaline wing membrane, except for the pterostigma.

Figures

FIGURES 43 – 46. Chrysopilus vitreus sp. n., male holotype: 43 — Wing, 44 — Antenna, 45 — Maxillary palpus, female paratype: 46 — Spermatheca.

FIGURES 47 – 51. Chrysopilus vitreus sp. n., male holotype: 47 — Terminalia, dorsal view, 48 — Terminalia, dorsal view, Ψ: 49 — Terminalia, ventral view, 50 — Sternite VIII, ventral view, 51 — Genital fork (S IX).