Hemipenthes translucens Ávalos-Hernández, 2009

Ávalos-Hernández, Omar, 2009, A review of the North American species of Hemipenthes Loew, 1869 (Diptera: Bombyliidae), Zootaxa 2074, pp. 1-49 : 41-42

21. Hemipenthes translucens Ávalos-Hernández , new species

(Fig. 23)

Holotype female in MZFC.

Diagnosis: Cell r1 entirely infuscated; cell r2+3 with basal half infuscated; cells dm, bm and a entirely hyaline; postalar bristles yellow.

Description: Female. Body length: 10–12 mm; wing length: 10–13 mm. Head: Eyes separated by twice the width of ocellar triangle. Front black pilose, yellowish tomentose, black scales in dorsal portion. Face black, rounded, with black hairs and yellow tomentum. Scape black, swollen on inner apical margin, with black hairs, twice as long as pedicel; pedicel black, twice as wide as long, with short black hairs in dorsal portion, bare in ventral portion; flagellomere black, longer than scape and pedicel combined; base subconical, tapering to styliform apical two-thirds; stylus minute, terminal. Proboscis short, not projecting beyond oral margin. Palpi black with black hairs. Occiput with short white hairs and yellowish scales, a few black scales present.

Thorax: Mesonotum anterior and lateral margins yellow pilose; tomentum on disc black, long, hairlike, not dense, yellow near scutellum; bristles yellow. Mesopleuron yellow pilose on proepisternum, anepisternum, and katatergite, katepisternum not tomentose, yellow pilose. Proepimeron with yellowish hairs. Mid coxa with black hairs, tomentum on all coxae hairlike, yellow. Legs black, femora black pilose, pile not dense, abundant yellow tomentum covering the whole legs, hind tibiae with broad yellow scales on anterior surface and black scales on posterior surface; bristles black. Halter steam brown, knob white. Scutellum black, not pilose, and black tomentose, yellow scales along posterior margin; without bristles. Black setulae on basicosta. Cells c, sc, and br entirely infuscated; cell r1 entirely infuscated except a hyaline spot near margin (Fig. 23); cell r2+3 with basal half infuscated; cell r5, with two basal third infuscated, cell bm infuscated just at base; r-m crossvein behind middle of cell dm; no crossvein between R4 and R2+3; cell cup narrowed at wing margin; spur at base of vein R2+3; cell r5 slightly narrowed at wing margin; first section of vein CuA1 twice the long of r-m crossvein, second section three times the long of r-m crossvein, third section twice the long of first two sections combined; cell a as wide as cell cup; alula well developed.

Abdomen: Abdominal dorsum white pilose on tergites one to three, rest black pilose, pile not dense; black tomentum overall with some fulvous scales scattered, fourth and seventh tergites with a broad crossband of fulvous tomentum in center and white tomentum on sides; sides of abdomen with first and basal half of second tergites pale yellow pilose, mixed black and white hairs on third and fourth tergites, fifth and sixth black pilose, seventh not pilose. Venter pale yellow pilose, yellow tomentose. Genitalia black with black hairs.

Male. Unknown.

Distribution: Mexico (Morelos).

Type material: Mexico. Morelos: Quilamula, 6-XII-2003, O. Ávalos and M. López (HOLOTYPE 1 female, PARATYPES 2 females; MZFC).

Etymology: The species epithet, translucens , is derived from the Latin meaning transparent and refers to the cell bm entirely hyaline.

Remarks: Hemipenthes translucens is clearly different from other species in the wing pigmentation and abdominal pile and tomentum. Only three female specimens has been collected from this species, from the same date. The external characteristics of these female specimens permit to affirm that represent a new species even though males are unavailable as additional confirmation. T