T. bastiaani sp.n. (holotype i, de Montecal, Apure State, Venezuela, 20-VIII-1983, 1ZA; allotype 9, San Silvestre, Barinas State, Venezuela, 23-X11-1957, IZA) is described. Taxonomic differentiation of femals of 34 Telebasis spp. is made practical with an artificial key, tabular summary, and descriptions of posterior prothoracic lobe and mesostigmal lamina of each.