Tabanus dorsorufus, 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 : 72-74

Tabanus dorsorufus sp. n. Carmo & Henriques

( Figures 9 A–D, 35)

Diagnosis. A reddish-brown species with postpedicel nearly as long as wide. Notopleuron integument paler than adjacent scutum. All coxae, mid and hind femora yellow with gray pruinescence. First tibia clearly bicolored, last third black. Abdominal middorsal stripe a series of yellow connected triangles. Dorsolateral stripes a series of disconnected dashes on tergites 1–6.

Holotype female. Length 11 mm, wing 9 mm. Eyes bare. Frons yellow pruinescent, divergent above, F.I. 6.3, D.I. 1.9. Frontal callus brown, higher than wide. Subcallus light brown, weakly inflated. Median callus slender, surrounded by dark pruinosity and hairs. Clypeus and gena with gray pruinescence and white hairs. First antennal segment pale brown, white haired, dark hairs above; second and third segments orange, tip of style slightly darker. Palpus with yellowish integument and white hairs, black hairs on distal portion. Proboscis black, yellowish pruinescent.

Scutum reddish with vestiges of gray pruinescence and black hairs. Scutellum red with brown anterior area. Notopleuron paler, light brown, with black hairs on lower half and gold on upper half. Integument of katepisternum concolorous with scutum, anepisternum darker, both with white hairs. All coxae with integument yellow, gray pruinescence and white hairs. Fore femur dark brown, with black hairs dorsally and white hairs and pale pruinescence ventrally. Fore tibia strongly bicolored with basal 2/3 yellow with white hairs, the remainder black and black haired. Fore tarsus blackish with black hairs, fringe of pale hairs at first tarsomere, ventrally. Mid and hind femora yellow with white hairs and gray pruinescence. Mid tibia yellow with white hairs, black hairs at apex. Hind tibia yellow with white hairs, fringed. Mid and hind tarsi brown with black hairs. Wing glass clear, stigma yellow.

Abdomen light brown, darkening to the apex. Median stripe series of connected triangles of pale pruinescence and hairs on tergites 1–6. Dorsolateral series of disconnected dashes from tergites 1–6. Sides of tergites paler and white haired. Abdomen unbanded ventrally and with white hairs, except for black hairs on sternites 6 and 7.

Male. Unknown.

Comments. The new species differs from T. restrepoensis , T. tristichus and T. isis by the discontinuous dorsolateral stripes and the middorsal stripe a row of narrow connected triangles. It also differs from the latter two by the strong bicolored fore tibia, and from T. tristichus by the more divergent frons. The holotype was fixed in ethanol, which caused the loss of some vestiture.

The paratype series shows variations in the postpedicel format (from nearly as wide as long to longer than wide) and style collor (from orange to black).

Type material. Holotype female: BRASIL, MT [Mato Grosso], Chap [ada] dos Guimarães, P [Parque]. N [Nacional]. Chapada dos Guimarães, S 15°24 ′ 37.2 ″; W 055°50 ′ 10.4 ″, Malaise 19– Trilha do Véu da Noiva , 03- 04.ix.2011, Lamas, C.J.E. & eq. [leg] ( MZUSP); paratypes: same data as holotype (3 ♀ MZUSP), Mato Grosso do Sul, Rio Verde , S 18°09 ′ 39.4 ″; W 54°09 ′ 0 2,4 ″, Malaise 38, 14-30.x.2012, Lamas, Nihei & equipe [leg] (♀ MZUSP), Mato Grosso, Aquidauana, Reserva Ecológica UEMS, Veg. Fechada Flor[esta] Est. Decidual S 20°25 ′ 59.0; W 55°39 ′ 20.8 ″, Malaise 0 7, 26.viii-11.ix.2012 Lamas, Nihei & eq. col; Tocantins, Peixe, vii.2011, Malaise, M.A. Bragança [leg] (3 ♀ CEUFT), Distrito Federal, Fazenda Água Limpa, UNB, 2003 (4 ♀ INPA, ♀ FSCA, ♀ BMNH); Rondônia, Ouro Preto do Oeste, [Handwritten] Linha 212 Lot 36 Gleba 21-B 3 a 5.ix.1986 Armadilha Suspensa [canopy trap] F.F. Ramos [Leg.] (2♀ MPEG); same locality 31.viii.1986 (♀ MPEG).

Additional material. Same data as holotype (12 ♀ MZUSP). Distrito Federal, Fazenda Água Limpa (8 ♀ INPA) .

Etymology. From Latin, dorsum (back) + rufus (red).

Figures

FIGURE 9. Tabanus dorsorufus sp. n. Holotype female. A. Dorsal habitus. B. Lateral habitus. C. Head, anterior view. D. Head, lateral view. Scale bars. A, B. 5 mm. C, D. 1 mm.