Ins ignea ( Macquart, 1846 ) 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 : 304-305

Ins ignea ( Macquart, 1846) , new combination

( Figs. 7 , 14 , 20 , 25 , 33 )

Anthrax ignea Macquart, 1846: 241 .

Hemipenthes ignea (Macquart) . Hull 1973: 386.

Villa (Hemipenthes) ignea (Macquart) . Painter & Painter 1974: 233.

Types. Lectotype ♀ from VENEZUELA [no further data] in BMNH. Lectotype designated by Painter & Painter (1974: 233) from 6 ♂ and 6 ♀ specimens in the Bigot Collection in BMNH. Macquart (1846: 241) gave the type locality as “Colombie”, but the label for the specimens says “Venezuela nom. par Macqt.” Types examined.

Diagnosis. A striking species that is easily separated from the congeners by the broadly orange-yellow color at the base of the wing ( Fig. 20 ) (dark brown to black in others) and the presence of white hairs on the mesal extension of the antennal pedicel (all black in other species). It is similar to I. pectorcolumbo , n. sp. in having the orange basal wing color (although not as extensive in I. pectorcolumbo ), but can be separated from it by the alula being opaque orange-yellow (the alula is smoky hyaline in I. pectorcolumbo ).

Description. Measurements. Body: 11.9–13.5 mm. Wing: 11.4–13.7 mm. Male. Head. Black; occiput gray pollinose, with silvery scales laterally, occipital fringe with short yellow hairs. 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, silvery tomentose immediately on lower two-thirds. Face moderately produced in lateral view, subconical, rounded apically, with sparse black hairs medially, admixed with dense bright white tomentum medially and laterally. Antenna dark 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 laterally; 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 white 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; dense golden tomentum in prescutellar area. Scutellum black tomentose dorsolaterally, with black hairs along posterior margin; golden tomentum posteroventrally. Pleura brown, gray pollinose; anepisternum dense long yellow pilose dorsolaterally, white elsewhere; katepisternum and anepimeron with short fine white hairs and tomentum; meron with patch of white scales immediately anterior to posterior spiracle; katatergite with dense long white hairs; metakatepisternum with dense patch of white hairs adjacent to hind coxa. Post alar callus with 4 strong black macrochaetae, with patch of shorter finer 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 ( Fig. 14 ) Infuscated on basal half of wing, hyaline apically, with extreme basal infuscation orange-yellow, brown elsewhere; infuscation dimidiately demarcated; cells c, sc, br, bm, and axillary lobes entirely infuscated, anal cell infuscated on basal three-fourths, ca. one-half of anal lobe infuscated; cells r1 and dm infuscated on basal onefourth; cell r2+3 infuscated only at extreme base; anal cell open in wing margin by width subequal to r-m crossvein. Basal one-fourth of anal cell fringed with yellowish white scales; alula fringed yellow scales; squama with dense long shiny golden scales.

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

Male genitalia ( Fig. 25 ). Phallic complex with parameral sheath, bare, relatively narrow in dorsal view with rounded apex, in lateral view with ventral blade-like process small, subtriangular; distiphallus with subapical notch.

Female. As in male except as follows: eyes separated by two times width of ocellar tubercle; frons gray pollinose, more tumid than in male, white scales only on lower half, admixed with yellow scales; mesonotum with adpressed golden tomentum anteriorly and anterolaterally. Female genitalia ( Fig. 33 ). Furca horseshoe-shaped with subtriangular sublateral projections directed mesally; sclerotized apical portion of spermathecal reservoir obtuse with rounded truncate apex, basal portion membranous with basal bulb slightly longer than sclerotized portion; apical spermathecal duct relatively short, slightly shorter than sclerotized portion of spermathecal reservoir complex, connected to membranous portion of spermathecal complex by minute sclerite; ejection apparatus long, thin, subequal in length to spermathecal reservoir complex, with small flared, sclerotized apical valve and narrow subconical non-sclerotized basal valve; basal spermathecal duct thin, subequal in length to spermathecal reservoir complex.

Other material examined. PANAMA: Canal Zone : 1♀, Barro Colorado Island , 14 Jun 1978, Silberglied, Aiello, hovering over cement walk ( USNM) : 1♀, Ocu , Jun 1953, N.L.H. Krauss ( USNM) ; 1♀, Taboga Island , 12 Feb 1912, A. Busck ( USNM) . VENEZUELA: 2♀, [no locality], 13 Jun 1988, C. Bolivar ( USNM) : 1♀, Maracay Edo , Aragua, 30 Jun 1943, C.H. Ballou ( USNM); 1m , 1♀, Guárico, Hato Masaguaral , 44 mi. S. Calabozo, 20–28 May 1985, A. Menke, J. Carpenter ( USNM) , 1♀, same data except 11–19 May 1985 ( USNM) ; 1♀, same data except 3–10 May 1985 ( USNM) .

Distribution. Colombia, Guyana, Panama (new record), Venezuela.

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.

FIGURES 24–28. Ins, male genitalia. 24, I. constituta, A, distiphallus and parameral sheath, lateral view, B. parameral sheath dorsal view. 25, I. ignea, A, distiphallus and parameral sheath, lateral view, B. parameral sheath dorsal view. 26, I. martinorum, A, distiphallus and parameral sheath, lateral view, B. parameral sheath dorsal view. 27. I. minas, A, distiphallus and parameral sheath, lateral view, B. parameral sheath dorsal view. 28 I. pleuralis, A, distiphallus and parameral sheath, lateral view, B. parameral sheath dorsal view.

FIGURES 29–33. Female genitalia. 29, Hemipenthes jaennickeana, spermathecal complex; 30–33. Ins female spermathecal complexes. 30, I. celeris;31, I. curta; 32, I. galathea; 33. I. ignea. Abbreviations: ad = apical spermathecal duct; av = apical valve; bv = basal valve; fur= furca; ej = ejection apparatus; sp = spermathecal reservoir