Tabanus trivittatus, Fabricius, 1805

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 : 65

Key to known males of Tabanus trivittatus species-group. Adapted from Fairchild (1976)

1 Ventral half (inflated portion) of subcallus wholly bare and shiny ( Figs. 6C , 8C ).................................... 2

- At least ventral half of subcallus pruinescent ( Figs. 2C , 20C , 26C , 28C ).......................................... 5

2 Middorsal abdominal stripe very broad ( Fig. 6A ). Dorsolateral barely visible......................... T. argentivittatus

- Middorsal abdominal stripe not so broad. Dorsolateral obviously evident.......................................... 3

3 All femora black, strongly contrasting with yellow tibiae ( Fig. 8B )...................................... T. callosus

- At least mid and hind femora yellow, not contrasting with the yellow and yellow haired tibiae......................... 4

4 Dorsolateral abdominal stripes a series of oval patches................................................. T. schadei

- Dorsolateral abdominal stripes continuous...................................................... T. restrepoensis

5 Area of large facets of the eye distinctly pilose.............................................................. 6

- Area of large facets of the eye bare........................................................................ 7

6 Postpedicel long and slender ( Fig. 26D ). Abdomen banded ventrally.................................... T. trivittatus

- Postpedicel short and broad. Abdomen unbanded ventrally............................................. T. palpalis

7 Subcallus with a dorsal triangular shiny area ( Fig. 2C )........................................ T. albocapillus sp.n.

- Subcallus entirely pruinescent, without shiny area ( Figs. 20C , 28C ).............................................. 8

8 Middorsal abdominal stripe broad and even, dorsolateral stripes faint or absent. Occipital band of small facets very narrow............................................................................................. T. unistriatus

- Middorsal abdominal stripe narrower than the well-marked dorsolateral stripes. Occipital band of small facets wide.................................................................................................. T. rhizonshine

Figures

FIGURE 2. Tabanus albocapillus sp. n. Paratype male. A. Dorsal habitus. B. Lateral habitus. C. Head, anterior view. D. Head, lateral view. Scale bars. A, B. 5 mm. C, D. 1 mm.

FIGURE 6. Tabanus argentivittatus. Male. A. Dorsal habitus. B. Lateral habitus. C. Head, anterior view. D. Head, lateral view. Scale bars. A, B.5 mm. C, D. 1 mm.

FIGURE 8. Tabanus callosus. Male. A. Dorsal habitus. B. Lateral habitus. C. Head, anterior view. D. Head, lateral view. Scale bars. A, B. 5 mm. C, D. 1 mm.

FIGURE 20. Tabanus rhizonshine. Male. A. Dorsal habitus. B. Lateral habitus. C. Head, anterior view. D. Head, lateral view. Scale bars. A, B. 5 mm. C, D. 1 mm.

FIGURE 26. Tabanus trivittatus. Male. A. Dorsal habitus. B. Lateral habitus. C. Head, anterior view. D. Head, lateral view. Scale bars. A, B. 5 mm. C, D. 1 mm.

FIGURE 28. Tabanus unistriatus. Male. A. Dorsal habitus. B. Lateral habitus. C. Head, anterior view. D. Head, lateral view. Scale bars. A, B. 5 mm. C, D. 1 mm.