Chrysopilus fascipennis Bromley

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 : 30

Chrysopilus fascipennis Bromley

Figures 93–99

Chrysopilus fascipennis Bromley in Curran, 1931: 8, James, 1968: 3.

Material. Holotype ɗ, GUIANA, Kartabo, Bartica District, 06º 27’ N, 58º 37’ W, I-V/1921, Bromley col. ( AMNH); additional specimens: 7 ɗ, BRAZIL, State of Pará, Santarém, Fazenda Taperinha, 02º 25’ N 54º 43’ W, X-XI/1970, Exped. Perm. Amaz. cols. ( MZSP); 1 ɗ, State of Amapá, Serra do Navio, 00º 53’ S 52º 00’ W, VIII/1959, Bicelli col. ( MZSP).

Diagnosis. Wing membrane with three brownish stripes; R2+3 reaching C very close to R1; R4 with strong sinuosity; first flagellomere conical, shorter than pedicel; gonostylus strongly truncated distally, with a clump of setae; ejaculatory apodeme long, exceeding base of terminalia; gonocoxal apodeme short.

Male. Body length, 8.0– 8.2 mm. Wing length, 5.0– 5.5 mm. General color dark brown. Eyes dark brown, facets homogenous, ocellar tubercle dark brown, ocelli grayish. Gena and clypeus brownish gray; clypeus bare ( Figure 96 ). Antenna dark brown; scape bare, half the length of pedicel; pedicel almost cubic; first flagellomere conical, shorter than pedicel ( Figure 97 ). Maxillary palpus long and slender ( Figure 94 ); proboscis and labella dark brown. Occiput gray, with silvery iridescent setae.

Thorax ( Figure 93 ) dark brown, with dark and golden setae. Halter bare, stem brown, tip yellow. Coxae and femora dark brown, with dark setae; tibiae brownish yellow. Wing membrane with three transverse brownish stripes ( Figure 95 ); pterostigma indistinguishable amid stripes; R2+3 reaching C very close to R1, without distal sinuosity; proximal portion of R4 with strong concavity, without short appendage; R4 curved distally toward anterior margin; CuA2 and A1 fusing far from margin; crossvein m-m far from origin of M2.

Abdomen brown, yellow stripes on first three segments. Tergite of first abdominal segment with silvery setae forming an iridescent band. Gonocoxite and gonostylus brown; gonocoxite wider than long; gonostylus strongly truncated distally, with a clump of setae; aedeagus long; ejaculatory apodeme exceeding base of terminalia; gonocoxal apodeme short; lateral ejaculatory process slender, parallel to ejaculatory apodeme ( Figure 98 ); meso-anterior incision of tergite IX short ( Figure 99 ); cercus brown.

Female. For general description and terminalia characters, see Pimentel (1975).

Distribution. Chrysopilus fascipennis occurs in northern Brazil and British Guiana. The holotype was formerly considered to be collected in Fonteboa, State of Amazonas, but it was a misinterpretation made by Curran (1931), since the type label brings clearly Kartabo, in the British Guiana, as the type-locality.

Figures

FIGURES 93 – 97. Chrysopilus fascipennis sp. n., male: 93 — Thorax, 94 — Maxillary palpus, 95 — Wing, 96 — Head, 97 — Antenna.

FIGURES 98 – 99. Chrysopilus fascipennis sp. n., male: 98 — Terminalia, dorsal view, 99 — Terminalia, dorsal view.