Nomada autumnalis Mitchell 1962 (ruficornis group)

(Michigan holotype; Fig. 12B)

Nomada (?Heminomada) autumnalis Mitchell, 1962: 382 .

Holotype. ♂ USA: Michigan: Oakland Co.: 23 Sep. 1923, A.W. Andrews (NMNH: 75212).

County records: Montmorency, Oakland.

Notes. Species delimitation and identification of bees within the genus Nomada are notoriously challenging and the ruficornis group, which may be paraphyletic (Alexander 1994) and includes the majority of eastern species (Alexander & Schwarz 1994), is in need of revision. The taxonomy of this species, which is nominally endemic to Michigan, remains in doubt.