Uruleskia alba, Nunez, Enio & Couri, Márcia S., 2012

Nunez, Enio & Couri, Márcia S., 2012, Uruleskia Townsend (Diptera, Tachinidae): Redescription Of The Type- Species, Description Of New Species And Key To Identification, Papéis Avulsos de Zoologia 52 (7), pp. 93-102 : 93-102

Uruleskia alba sp. nov.

( Figures 6-10 )

Diagnosis: fronto-orbital plate and parafacial white; vertex gold; 9-12 pairs of frontal setae in male, 6-10 pairs in female, 2-3 pairs below the level of antennal insertion; inner vertical setae crossed, outer verticals about half length of the inners; proboscis length about 1.2 times the head height; vein R 1 setulose on apical half on dorsal surface and vein R 4+5 setulose from base almost to crossvein r-m on dorsal surface; scutellum yellowish; abdomen yellowish, usually with median apical brown spot dorsally on T 4.

Description: Male. Body length: 7.5-8.5 mm; wing: 6.5-7.5 mm.

Head: ( Fig. 6 ) white with golden pruinosity on vertex; 9-12 pairs of frontal setae, 2-3 pairs below the level of antennal insertion; ocelar setae short, similar in length with the shorter frontals; frons about 0.25 the head width at the level of anterior ocellus; inner vertical setae crossed, outer vertical setae half length of the inners; flagellomere brownish, yellowish on base; proboscis length about 1.2 times the head height; vibrissa long; 5-8 pairs of subvibrissal setulae, shorter near vibrissa; palpus yellowish.

Thorax: acrostichals 2+1; dorsocentrals 2+3 or 3+3; intra-alars 1+3; post-pronotals 2; scutellum yellowish with one pair of basal setae; one pair of subapicals and one pair of short discals. Wing and calypter slightly infuscated, vein R 1 setulose on apical half on dorsal surface ( Fig. 7 ) and vein R 4+5 setulose from base almost to crossvein r-m on dorsal surface. Legs with coxa, trochanter and femur yellow; fore and mid tibia yellow and hind tibia slightly brown; fore and mid tarsi slightly brown; hind tarsus dark brown; fore tibia with one anterodorsal row of setae; 1 dorsal subapical seta; mid femur with 1 anterior seta on middle third; 4-6 sparse and long posteroventral setae on basal half; 2 posterodorsal subapical setae; mid tibia with 1 strong anterodorsal and 1 strong ventral seta on middle third; 2 posterior setae on middle third; 1 anterodorsal subapical and 1 dorsal subapical seta; 1 anteroventral, 1 ventral and 1 posteroventral apical seta; hind femur with 4-6 sparse posteroventral setae on basal half; hind tibia with one anterodorsal row of setae, the median one the largest; 2-3 ventral setae on middle third, the apicad the largest; 1 posterodorsal and 1 anterodorsal subapical seta; 1 anteroventral apical seta.

Abdomen: yellowish; T 1+2 not excavate to its hind margin; sometimes with a median apical brown spot dorsally on T 4.

Male terminalia: sternite 5 as described for the genus; surstyli a little longer than cerci and with a ventral row of short spines on apical half ( Fig. 8 ); cerci abruptly curved inward at middle and very narrow apically ( Fig. 9 ), apex slightly curved backwards; pregonite triangular in lateral view; postgonite narrow ( Fig. 10 ).

Female: Differs from male as follows: 2 pairs of proclinate and 2 pairs of reclinate orbital setae; palpus a little swollen at tip.

Type material: Holotype ♂. BRAZIL. Rondônia: Ariquenes, Rio Ji-Paraná, 09°44’S- 61°52’W, armadilha Malaise , 28.x.1986, Rafael, J.A. col. ( INPA ) . Paratypes: Amazonas : 26 km NE de Manaus, Reserva Ducke, armadilha suspensa 20 m, 1 ♂, 01.xii.1988, Rafael, J.A. col. ( INPA ); F. Esteio, R 1401 , km 27, ZF3, armadilha Malaise (1), 1 ♀, 17-31.i.1996, Silva, L.E.F. R . col. ( INPA ); armadilha Malaise (4), 1 ♀, 10-25.xi.1995, Silva, L.E.F. R . col. ( INPA ); R 1501 , km 41, ZF3, arm. Malaise (1), 1 ♀, 16-31.x.1995, Silva, L.E.F. R . col. ( INPA ); 1 ♂, same data as holotype ( MNRJ) .

Geographic record: Brazil (Amazonas and Rondônia).

Derivation of specific epithet: derived from the latin word alba , in reference to the white ground colour of the head.

Comments: U. alba sp. nov. is easily recognized from the other congeneres by the white ground colour of the head and by vein R 1 setulose apically on dorsal surface.

Figures

FIGURES 1‑11: 1-5: Uruleskia aurescens Townsend, holotype male, 1. Head, lateral view; 2. Wing, dorsal view; 3. Cerci and surstyli, posterior view; 4. Cerci and surstyli, lateral view; 5. Hypandrium, pregonite, postgonite and edeagal complex, lateral view. 6-10: Uruleskia alba sp. nov., holotype male, 6. Head, lateral view; 7. Wing, dorsal view; 8. Cerci and surstyli, posterior view; 9. Cerci and surstyli, lateral view; 10. Hypandrium, pregonite, postgonite and edeagal complex, lateral view. 11: Uruleskia extremipilosa sp. nov., holotype male.Sternite 5, dorsal view.