Towhees are in the genus Pipilo consisting of the following species.

Green-tailed Towhee, Pipilo chlorurus
Collared Towhee, Pipilo ocai
Eastern Towhee, Pipilo erythrophthalmus
Spotted Towhee, Pipilo maculatus
Olive-backed Towhee, Pipilo maculatus macronyx
Socorro Towhee, Pipilo socorroensis,
California Towhee, Pipilo crissalis
Canyon Towhee, Pipilo fuscus
Abert's Towhee, Pipilo aberti
White-throated Towhee, Pipilo albicollis

Towhees are in the family Emberizidae consisting of towhees, buntings, American Sparrows and juncos.