Sphecodes aroniae Mitchell 1960 (ranunculi group) (New state record)

County records: Midland, Muskegon.

Notes. Sphecodes aroniae is very similar to S. ranunculi, which was previously known from the state, and the former has been under-recorded in published studies (Goldstein & Ascher 2016). Females recorded below were distinguished from S. ranunculi (Robertson) by the flat distinct genal carina and the male by the greatly expanded angular mesotibia. Both sexes are also recognizable by the flat procoxa.

Material examined. Midland Co.: (no locality), 5–11 Jun. 1961, R.R. Dreisbach (1 ♂ MSUC) ; Muskegon Co.: Tyler Rd., W of Dalton, 17 km N of Muskegon, N43.319 W86.264, 8 Jun. 2013 (2 ♀ JBWM, MSUC: RI), 5 Jun. 2014 (1 ♀ JBWM) .