Triepeolus denverensis Cockerell, 1910  

Triepeolus denverensis females are readily recognized by the triangular pseudopygidial plate, which is mostly silvery except for the small, subapical patch of dark, coarse setae. This pseudopygidial area is somewhat similar to that of T. isohedrus, and especially T. punctoclypeus. Triepeolus denverensis may be distinguished from T. isohedrus by the paramedian bands of pale setae on the mesoscutum (forming distinct anchor-shaped pattern in T. isohedrus), the LLB on T2 (lacking or forming 90 degree angle in T. denverensis, forming acute angle in T. isohedrus), and by the predominantly silver pseudopygidial area in T. denverensis, among other characters. Triepeolus denverensis may be differentiated from T. punctoclypeus by the distinctly coarser texture of the dark, submedian patch of setae on the pseudopygidial area in T. denverensis, by the denser punctation of the mesepisternum in T. denverensis, and by the distinct larger punctures of the clypeus in T. punctoclypeus. Some females of this species from Utah are noteworthy for the absence (or partial absence) of bands of pale setae, sometimes resulting in an entirely black appearance.