Chrysopilus hyalinus, 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 : 23-25

Chrysopilus hyalinus sp. n.

Figures 66–74

Material. Holotype ɗ, BRAZIL, State of São Paulo, Salesópolis, Estação Biológica Boracéia, 23º 29’S 45º 44’W, 15/XII/1947, E. Rabello col. ( MZSP); paratypes: 2 ɗ, the same as holotype, but, 24-30/I/1952, L. T. F. Carrera, Vanzolini, Oiticica & Pearson cols. ( MZSP); 1 Ψ, Eug. Lefevre, State of São Paulo, Campos do Jordão, 1200 m, 21/XII/1962, 22º 44’ S 45º 35’ W, L.T.F.E. Rabello & Madeiros cols. ( MZSP); 1 Ψ, State of São Paulo, Salesópolis, Estação Biológica Boracéia, 23º 29’S 45º 44’W, I/1949, M.P. Barreto col. ( MZSP).

Diagnosis. Wing homogeneously hyaline except for the rounded pigmented pterostigma; R2+3 with distal concavity; ejaculatory apodeme long, exceeding base of terminalia; silvery iridescent setae on last three abdominal segments.

Male. Body length, 7.0– 7.8 mm. Wing length, 4.5–5.0 mm. General color dark brown. Eyes brownish to yellow, facets heterogeneous, ocellar tubercle dark brown, ocelli yellowish. Gena and clypeus dark brown, clypeus bare. Antenna brown; scape bare, wider and shorter than pedicel; pedicel approximately cylindrical; first flagellomere suboval, shorter than pedicel ( Figure 67 ). Maxillary palpus long, slender ( Figure 68 ). Proboscis and labella brown. Occiput brownish gray, with golden setae.

Thorax uniformly dark brown. Halter bare, stem brown, knob yellowish. Coxae darker than femora and tibiae, both brownish yellow with golden setae. Wing homogeneously hyaline except for rounded, pigmented pterostigma ( Figure 66 ); R2+3 reaching C far from R1, R2+3 with distal concavity; R4 forking with almost right angle, without short appendage, reaching margin without distal fold; CuA2 and A1 fusing far from margin; crossvein m-m far from origin of M2.

Abdomen dark brown, silvery iridescent setae on tergites of last three segments. Gonocoxite and gonostylus dark brown; gonostylus slightly acuminate distally, covered with long setae; aedeagus long; ejaculatory and gonocoxal apodemes long, the former exceeding base of terminalia, the later almost reaching it; lateral ejaculatory process wide, projected obliquely from the base of ejaculatory apodeme ( Figure 70 ); meso-anterior incision of tergite IX short ( Figure 71 ); cercus dark brown.

Female. Body length, 7.0– 7.5 mm. Wing length, 5.2–5.5 mm. Thorax and abdomen similar to male. Anterior margin of sternite VIII rounded, hypogynial valves with at least five long setae ( Figure 73 ); genital fork with anterior end acuminate, wide distal apodemes ( Figure 74 ); cercus two-segmented, distal segment suboval ( Figure 72 ); common spermathecal ducts short, spermathecal ducts long; spermathecae spherical ( Figure 69 ).

Distribution. Chrysopilus hyalinus occurs at the eastern region of the State of São Paulo (from Salesópolis to Campos de Jordão).

Etymology. The species name is derived from the Latin word hyalinus , for translucent, as a reference to the mostly hyaline wing membrane.

Figures

FIGURES 66 – 69. Chrysopilus hyalinus sp. n., male holotype: 66 — Wing, 67 — Antenna, 68 — Maxillary palpus, female paratype: 69 — Spermatheca.

FIGURES 70 – 74. Chrysopilus hyalinus sp. n., male holotype: 70 — Terminalia, dorsal view, 71 — Terminalia, dorsal view, female paratype: 72 — Terminalia, lateral-ventral view, 73 — Sternite VIII, ventral view, 74 — Genital fork (S IX).