Uruleskia infima, 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 infima sp. nov.

( Figures 15-18 )

Diagnosis: one or two pairs of reclinated and 2 pairs of proclinated orbital setae in males and females; frontal vitta yellow; fronto-orbital plate and vertex gold; parafacial white; gena yellow tinged; 5-7 pairs of frontal setae, 1-2 pairs below the level of antennal insertion; short ocellar setae similar in length with the shorter frontals; inner and outer vertical setae present; palpus yellow, filiform and shorter than antenna; proboscis about 1.2 times the head height; wing vein R 1 entirely setulose on dorsal surface and vein R 4+5 setulose from base to crossvein r-m on dorsal surface; claws and pulvilli short in both sexes; scutellum yellow; with one pair of short discals; abdomen yellowish, usually with median apical brown spots dorsally on T 3 and T 4.

Description: Male. Body length: 4.0-6.0 mm; wing: 3.0-5.0 mm.

Head: fronto-orbital plate and vertex gold; 5-7 pairs of frontal setae, 1-2 pairs below the level of antennal insertion; short ocellars setae similar in length with the shorter frontals; frons with 0.25 the head width at the level of anterior ocellus; inner and outer vertical setae present; flagellomere dark brown, yellow on base; gena yellow; proboscis about 1.2 times the head height ( Fig. 15 ); vibrissa long; 4-7 pairs of subvibrissal setulae, shorter closer vibrissa; palpus yellow and filiform, little shorter than antenna.

Thorax: acrostichals 1+1; dorsocentrals 2+3; intraalars 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 entirely setulose on dorsal surface ( Fig. 16 ) and vein R 4+5 setulose from base to crossvein r-m on dorsal surface. Legs with coxa, trochanter and femur yellowish; fore and mid tibia yellowish hind tibia slightly brown; tarsus dark brown; fore tibia with one anterodorsal and one posterodorsal row of setae; 1 dorsal subapical seta; claw and pulvillus short; mid femur with 1 anterior seta on middle third; 3-6 long and sparse posteroventral setae on basal half; 2 posterodorsal subapical setae; mid tibia 1 strong anterodorsal seta and 1 strong ventral seta on middle third; one posterodorsal row of short setae; 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 and 1 anteroventral apical seta; hind tibia with one anterodorsal row of setae, the median one the largest; one anteroventral row of setae; 3-5 ventral setae on middle third; 1 anterodorsal and 1 dorsal subapical seta; 1 anteroventral apical seta.

Abdomen: yellowish; T 1+2 not excavate to its hind margin; usually with a median apical brown spot dorsally on T 3 and T 4.

Male terminalia: sternite 5 as described for the genus; surstyli little longer than cerci and with ventral row of short spines ( Fig. 17 ); cerci abruptly curved inward at middle and narrowed to tip ( Fig. 18 ); pregonite triangular in lateral view; postgonite narrow in lateral view.

Female: Differs from male as follows: palpus a little swollen at tip; median apical brown spot dorsally on T 3.

Type material: Holotype ♂. BRAZIL. Amazonas : Manaus, F. Esteio, R 1401 , km 27, ZF3, armadilha suspensa, 1 ♂, 3, 17-31.i.1996, Silva, L.E.F. R. col. ( INPA ); Malaise, 1 ♀, 16-31.viii.1995, Silva, L.E.F. R. col. ( INPA ); F. Esteio, R 1501 , km 41, ZF3, armadilha suspensa (4), 1 ♂, 10-25.xi.1995, Silva, L.E.F. R. col. ( MNRJ); Reserva Gavião, P.D.B.F.F., Malaise, 1 ♀, 20-28.iii.1995. ( INPA ).

Geographic record: Brazil (Amazonas).

Derivation of the specific epiteth: due to the small size of the fly.

Comments: This species resembles the nearctic species Genea brevirostris (James) , based on characteres such as: male and females with two proclinate and one reclinate pairs of orbitals; the length of the mentum, not surpassing the head height; male terminalia with cerci abruptly curved inward at middle and narrowed to tip; surstyli little longer than cercus and with short ventral spines. The hairs on dorsal surface of R1, the length of the palpus and the male terminalia can easily segregate this species from its congeners.

Figures

FIGURES 12‑21: 12-14: Uruleskia extremipilosa sp. nov., holotype male, 12. Cerci and surstyli, posterior view; 13. Cerci and surstyli, lateral view; 14. Hypandrium, pregonite, postgonite and edeagal complex, lateral view. 15-18: Uruleskia infima sp. nov., holotype male, 15. Head, lateral view; 16. Wing, dorsal view; 17. Cerci and surstyli, posterior view; 18. Cerci and surstyli, lateral view. 19-21: Uruleskia parcapilosa sp. nov., holotype male, 19. Head, lateral view; 20. Cerci and surstyli, posterior view; 21. Cerci and surstyli, lateral view.