Ins pectorcolumbo Evenhuis, 2020

Evenhuis, Neal L., 2020, A new genus for Painter & Painter’s Villa “ celer ” - group in the New World (Diptera: Bombyliidae), Zootaxa 4748 (2), pp. 296-314 : 307-308

Ins pectorcolumbo Evenhuis , new species

( Figs. 9 , 17 , 21 )

Diagnosis. This species is closest in appearance to I. ignea based on the pale colored base of the wing but can be easily separated from it by the alula being smoky hyaline ( Fig. 21 ) (alula orange-yellow in I. ignea ).

Type. Holotype ♀ (USNMENT 1353655) and 1♀ paratype from EL SALVADOR: San Salvador, 18 May 1958, O.L. Cartwright ( USNM).

Description. Measurements. Body: 7.1–12.0 mm. Wing: 7.5–12.5 mm. Female ( Fig. 9 ). Head. Black; occipital fringe with short yellow hairs, admixed with black hairs above and white hairs below. Eyes separated at vertex by slightly more than width of ocellar triangle. Frons slightly tumid, black pilose to just above antennae and along inner eye margins, yellow tomentose immediately above antennae. Face moderately produced in lateral view, subconical, rounded apically, with black hairs medially, admixed with yellowish white tomentum laterally. Antenna brown, scape subcylindrical, flared at mesoapical margin, twice as long as pedicel, with black hairs laterally, long white hairs mesally; pedicel subspherical, with sparse black hairs dorsally and ventrally; flagellomere longer than scape and pedicel combined; onion shaped, tapering to thin styliform apical three-fourths, style minute, terminal. Proboscis short, brown, not projecting beyond oral margin. Palpi brown, with sparse, long black hairs.

Thorax. Mesonotum and scutellum matte black, with anterior and anterolateral margins dense thick yellow pilose; disc uniformly covered with sparse minute yellowish white hairs; admixture of black hairs and golden tomentum in prescutellar area. Scutellum with black hairs along posterior margin; golden tomentum posteroventrally. Pleura brown, gray pollinose; anepisternum dense long yellow pilose, with admixture of dark brown hairs medially; katepisternum and anepimeron with short fine yellow hairs; meron with patch of white scales immediately anterior to posterior spiracle; katatergite with dense long yellowish white hairs; metakatepisternum with small patch of yellow hairs adjacent to hind coxa. Post alar callus with patch of short black hairs and golden tomentum. Halter stem and knob yellowish white.

Legs. Brown; coxae with yellow hairs; femora with golden scales and adpressed brown scales apicodorsally; fore tibia without bristles, with minute thin hairs.

Wing ( Figs. 17 , 21 ) Infuscated dark brown to black basally, hyaline apically, with infuscation dimidiately demarcated; cells c, sc, br, bm, and anal (except at extreme tip) and axillary lobes entirely infuscated; cell r1 hyaline at tip; cell dm almost all infuscated; cell r2+3 infuscated on basal 2/3; cell r4 infuscated on basal 1/4; cell r5 with apical 1/5 hyaline, cells m2 and m3 infuscated basally; remainder of wing hyaline without spots; anal cell open in wing margin by width subequal to r-m crossvein. Basal 1/3 of anal cell fringed with yellow scales; alula fringed with brown scales basally, yellow scales apically; squama with dense long shiny golden scales.

Abdomen. Chocolate brown, tergites black tomentose dorsally, dense yellow pilose laterally on tergite I; tergite II with yellow hairs anterolaterally, black hairs posterolaterally; tergites III–V with thick black hairs laterally; tergites VI–VII with dense white scales laterally. Venter chocolate brown, adpressed long white pilose and tomentose.

Genitalia. Not dissected.

Male. Unknown.

Etymology. The specific name derives from the Latin pector [= chest, breast] + columba [= dove]; referring to the puffed up appearance of the prothorax in some angles.

Figures

FIGURES 4–9. Habitus views of Ins, n. gen. 4, I. celeris, lateral view; 5, I. curta, lateral view; 6, I. constituta, dorsal view; 7, I. ignea, dorsal view; 8, I. martinorum, dorsal view; 9, I. pectorcolumbo, n. sp., lateral view.

FIGURES 10–19. Hemipenthes wing. 10, H. sinuosa. 11–17, Ins wings. 11, I. celeris; 12, I. curta; 13, I. constituta; 14, I. ignea; 15, I. martinorum; 16, I. minas; 17, I. pectorcolumbo, n. sp.; 18, I. pleuralis; 19, I. zanouts, n. sp.

FIGURES 20–21. Ins, details of base of wing. 20, I. ignea; 21, I. pectorcolumbo, n. sp.