Key to the species of Tagalis, modified from McAtee & Malloch (1923) and Melo (2008)

1 Profemora incrassate, protibiae with four spines ......................................................................................... T. femorata

1´Profemora slender, protibiae with three spines............................................................................................................. 2

2 Pale species; femora with only a subapical dark annulus ............................................................................. T. inornata

2´Dark species; femora black or brownish, at least with apices fuscous ......................................................................... 3

3. Integument of hind lobe of pronotum smooth; spines of scutellum and metanotum longer (Fig. 42); male: median process of pygophore long (Figs. 44–46); parameres with apical third beside the pygophore (Figs. 45–46) ................ .................................................................................................................................................................... T. seminigra

3´Integument of hind lobe of pronotum rugous; spines of scutellum and metanotum shorter (Fig. 6); male: median pro- cess of pygophore short (Figs.10–12, 14); parameres all within pygophore rim (Figs. 10–11, 13) ............................... ....................................................................................................................................................... T. evavilmae sp. nov.