Tabanus noncallosus, Carmo & Henriques, 2019

Carmo, Daniel D. D. & Henriques, Augusto L., 2019, Taxonomy of Tabanus trivittatus species-group (Diptera: Tabanidae), with description of five new species, Zootaxa 4554 (1), pp. 63-100 : 78-80

Tabanus noncallosus sp. n. Carmo & Henriques

( Figures 14 A–E, 34)

Diagnosis. A brownish species with subcallus light brown and only slightly inflated. Notopleuron concolorous with scutum. Frons not markedly divergent above (D.I. 1.7) All coxae and fore femur black. Mid and hind femora blackish at base, and yellow at apical half. Mid and hind tibia yellow. Wings brown tinted especially on costal and radial cells.

Holotype female. Length 10.5 mm Wings 8.4 mm. Frons pruinescent yellow, golden near median callus apex, slightly divergent above F.I. 6.3, D.I. 1.7. Frontal callus brown, rounded, higher than wide. Median callus dark brown, slender and connected to callus. Subcallus light brown, slightly inflated. Clypeus and gena pruinescent white with white hairs. Both yellow with black hairs. Postpedicel clearly longer than wide, dorsal tooth with black hairs at apex. Style greater than half postpedicel length. Palpus slightly inflated at base, light brown covered with yellow pruinescence and mixed black and white hairs.

Scutum and scutellum integument blackish except for brown supra-alar region, black erect hairs mixed with recumbent golden hairs. Notopleuron dark, concolourous with scutum with long black hairs. Pleuron integument dark brown, pruinescent gray with white hairs. Fore femur and all coxae black. Mid femora blackish at basal third, yellow at the remainder. Hind femur blackish infuscated basally, remainder yellow. Fore tibia bicolored, basal half yellow with yellow hairs, apical half brown with black hairs. Mid and hind tibia yellow with yellow and black hairs, hind tibia with comb of erect black hairs ventrally. Fore tarsus dark brown with black hairs. Mid and hind tarsi brownish yellow with black hairs. Wings lightly brownish tinted at r1 and r2+3. Costal cell hyaline. Stigma yellow.

Abdomen brown, black pilose. Mid stripe broad, pruinescent white, reaching tergite 6. Dorsolateral broad, interrupted through tergite 3, faint indications at 4. Sides of tergites 1–5 with pale pilosity and pruinescence. Abdominal sternites pruinescent black, black haired, medial stripe. Sides of sternites 1–4 light brown with pale hairs, black with black hairs at remainder. Posterior margin of sternites with narrow white pruinescent band.

Male. Unknown.

Comments. This species possess intermediary characteristics between T. callosus and T. picicallosus . It differs from both by having a less pronounced subcallus. It also differs from the former by the paler femora. From the latter, it differs by the black coxae and wings less infuscated.

Type material. Holotype female: BOLIVIA, [La Paz], Palos Blancos, Alto Beni, 11-15.I. 1976, 600m., L.E.Pena [leg] ( FSCA); paratypes: PERU, Madre de Dios, Rio Tambopata Res , 30 km (air) SW Puerto Maldonado, 290m, 20-31-X-1982. R. Wilkerson [leg] (♀ FSCA), BRASIL, Acre, Parque Nacional da Serra do Divisor , Sítio 5, Norte, 7°27 ′ 32 ″ S, 73°46 ′ 28 ″ W, 14/XI/1996, E.F. Morato, leg. (♀ INPA).

Etymology. From Latin, non (no) + callosus , by the similarity with this species.

Figures

FIGURE 14. Tabanus noncallosus sp. n. Holotype female. A. Dorsal habitus. B. Lateral habitus. C. Head, anterior view D. Head, lateral view. Scale bars. A, B. 3 mm. C, D. 1 mm.