Characteristics
Sobarocephala dreisbachi is a relatively uncommonly-encountered eastern species with one pair of dark postsutural notal stripes that are basally connected in front of the scutellum, which is yellow medially. Males also have a posteromedial comb of bristles on the fifth sternite and a large surstylus.

Similar species
Like Sobarocephala setipes, S. texensis and S. lachnosternum, S. dreisbachi has a male fifth sternite with a short comb-like row of bristles, but the surstylus of S. dreisbachi is much longer than that of related species. The scutum of S. setipes is sometimes bivittate, but the stripes are never connected as in S. dreisbachi.     

Distribution
Most records of Sobarocephala dreisbachi are from southern Ontario, Michigan and Quebec, but this species has also been found as far south as Tennessee and Texas, suggesting that it may occur throughout much of the eastern United States.