Longivena, Vieira, Rodrigo & Rafael, Jose Albertino, 2014

Vieira, Rodrigo & Rafael, Jose Albertino, 2014, Longivena, a new robber-fly genus from Brazil (Diptera, Asilidae, Asilinae), ZooKeys 443, pp. 119-138 : 120

Taxon classification Animalia Diptera Asilidae

Longivena gen. n.

Type species.

Longivena digitata sp. n. (present designation).

Etymology.

From Latin, longi = long + vena= vein, referring to the long stump vein (supernumerary crossvein) on R4 that reaches the base of R2+3.

Gender.

Feminine.

Distribution.

Brazil: Maranhão, Bahia, Minas Gerais and Mato Grosso do Sul states (Fig. 50).

Description.

Head. Postpedicel oval, small, narrow distally; two to six setae, and two to four ocellar macrosetae; vertex black or yellowish, usually sparsely gold tomentose; face black or yellow, gold tomentose; proboscis black with thin and yellow ventral setae; labial setae yellowish; occipital setae white or yellowish. Thorax: two black no topleural macrosetae; one to two black supra-alar macrosetae; two black postalar macrosetae; no anatergal setae; thin, yellowish and black, discal scutellar setae yellowish or black, katatergal macrosetae yellowish; setae on posterior meron + metanepisternum yellowish. Wing: Without costal dilation; bifurcation of R4+5 beyond apex of discal cell; R4 supernumerary crossvein present, complete, reaching R2+3, as long as 1/5-1/6 of R2+3 length (Figs 3, 12, 21, 34, 43); microtrichia on posterior wing margin arranged in a single plane. Legs: Femora black or light yellow (Figs 1, 10, 19, 28, 32, 41); fore femur with yellow setae ventrally, occasionally with some black setae. Male abdomen: sternite VIII may be developed medioapically (Figs 9, 23, 45). Male terminalia: oblique to body axis (Figs 1, 10, 19, 32, 41); epandrium divided proximally and halves approximated medially; hypandrium dorsoventrally flatenned medially; hypandrium partially fused to base of epandrium; aedeagus directed dorsally (Figs 5, 17, 26, 39, 48). Female terminalia: Tergite VIII long and slender (Figs 28, 30). Tergite IX + X membranous medioapically; three oval and sclerotized spermathecal capsules (Fig. 31).