Somula decora Macquart, 1847.
Macquart, P.J.M. 1847. Dipteres exotiques nouveaux ou peu connus. 2.e supplement. Roret, Paris. 104 pp, 6 pls. [before 1847.05.26]
Species described from Philadelphia, it ranges from Minnestoa to New Brunswick, south to Texas and Georgia.
unless otherwise stated