Triepeolus tepanecus (Cresson, 1878)  

This species is very similar to T. laticeps and T. mauropygus; all three species share the darkly shining pseudopygidial area, with a poorly differentiated basal region of finer, denser setae, and the sparse, short, erect, simple setae of the mesepisternum. See Table 2 for further characteristics of each species. Triepeolus tepanecus also resembles T. totonacus but can be differentiated by the pseudopygidial area, which in T. totonacus has a distinctly differentiated, and relatively long, basal region of fine, shining setae; by the mesepisternum, which entirely lacks erect, simple setae in T. totonacus; and by the T1 discal patch, which is widely ovate to trapezoidal (never triangular) in T. totonacus.