Genea brasiliensis ( Townsend, 1929 )

Nunez, Enio & Couri, Márcia S., 2011, Revision Of Neotropical Genea Rondani (Diptera, Tachinidae, Tachininae, Leskiini), Papéis Avulsos de Zoologia 51 (31), pp. 481-497 : 484-485

Genea brasiliensis ( Townsend, 1929)

(Figures 6-7)

Dejeaniopalpus brasiliensis Townsend, 1929: 368 (original description of male and female); James, 1947: 104-106 (key and redescription of male and female); Guimarães, 1971: 116 (catalogue).

Genea brasiliensis ; Wood, 1987: 1264 (combination to Genea ); O’Hara & Wood, 1998: 761 (combination to Genea formalized).

Diagnosis: Males and females alike with proclinate and reclinate orbital setae; vitta yellow; parafacial white with the same width of the flagellomere; 5-8 pairs of frontal setae, 2-3 pairs below the level of the antenna inserction; inner and outer verticals present; palpus clavate and exceptionally long with almost twice the length of the flagellomere; proboscis long, with 1.5 times the head height. Wing vein R 1 entirely setulose and vein R 4+5 setulose from base to crossvein r-m; scutellum yellowish, with 1 pair of weak discal setae; abdomen yellow, somewhat darker on T 4 and T 5, with a brown stripe dorsally and with a golden pruinosity on T 3 to T 5 on females; 1 pair of median marginal setae on T 3.

Male: Body length, 8.0-10.0 mm; wing, 7.0-9.0 mm.

Head: Fronto-orbital and vertex slightly gold; parafacial white with the same width of the flagellomere; vitta yellow; 5-8 pairs of frontal setae, 2-3 pairs below the level of the antennal insertion; frons with 0.45 of head width at the level of anterior ocellus; inner and outer vertical setae present; antenna yellow, flagellomere brown, yellow on base; arista slightly plumose; proboscis long, with 1.5 times the head height (Fig. 6); long vibrissa; 4-7 pairs of subvibrissal setulae, shorter near vibrissa; 1-3 pairs of setulae above the vibrissa; palpus clavate and exceptionally long with almost twice the length of the flagellomere.

Thorax: Brown in ground colour and with white and gold pruinosity; dorsocentrals 3+3; post-pronotals 3; scutellum yellowish with one pair of basal setae; one pair of subapical setae and one pair of weak discal setae; pleura yellowish on anterior half otherwise brown, covered with white pruinosity and with long yellow setulae. Wing and calypter hyaline; vein R 1 entirely setulose and vein R 4+5 setulose from base to crossvein r-m. Legs with coxa, trochanter and femur yellow; fore tibia yellow, mid and hind tibia slightly brown and tarsus brown; fore tibia with 2 long posterior setae on middle third; 1 anterodorsal and 1 dorsal subapical seta; 1 posteroventral apical seta; claw and pulvilli short; mid femur with 2 anterior setae on middle third; 2-3 long and sparse posteroventral setae on basal half; 2 posterodorsal subapical setae; mid tibia with 1 long anterodorsal seta on middle third and 1 short seta on apical third; 1 strong ventral seta on middle third; 2 posterior setae on middle third; 1 anterodorsal and 1 posterodorsal subapical seta; 1 anteroventral, 1 ventral and 1 posteroventral apical seta; hind femur with 2 posterodorsal setae on apical third; 2-3 posteroventral sparse setae on basal half and 1 anteroventral on basal, mid and apical third each; hind tibia with one posterodorsal row of setae; 2 ventral setae on middle third; 1 anterodorsal subapical and 1 posterodorsal subapical seta; 1 anteroventral apical seta.

Abdomen (Fig. 7): Yellow and somewhat darker on T 4 and T 5; T 1+2 not excavate to its hind margin; with a brown stripe dorsally and with a white pruinose band on T 3 to T 5 basal margins and lateral brown spots on T 3, T 4 and T 5; 1 pair of median marginal setae on T 3.

Male terminalia: Not dissected.

Female: Differs from male as follows: palpus slightly clavate; abdomen with a large median shiny brown spot dorsally more large and more conspicuous white pruinose band on T 3 to T 5 basal margins.

Type material: Lectotype male (n57291). BRAZIL. São Paulo: Itaquaquecetuba, xi.1920, Townsend ( USNM); paralectotype, 1 female, ix.1915, same label as male ( USNM).

Geographic distribution: Brazil (São Paulo).

Comments: Easily recognised by the median dorsal brown stripe on the abdomen from T 1+2 to T 5; males and females alike with reclinate and proclinate orbital setae and claw and pullvillus short.