Taxonomy of Tabanus trivittatus species-group (Diptera: Tabanidae), with description of five new species Author Carmo, Daniel D. D. Author Henriques, Augusto L. text Zootaxa 2019 2019-02-08 4554 1 63 100 journal article 27580 10.11646/zootaxa.4554.1.2 d41c057e-5b64-4634-84dc-bd5f56a9d789 1175-5326 2623296 986112BE-6ABB-47FE-BA8F-CECEF1C21A5D 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