Megachile (Callomegachile) sculpturalis Smith 1853

County records: Cheboygan, Ingham, Jackson, Kent, Monroe, Oakland, Osceola, Washtenaw, Wayne.

Notes. Megachile scultupuralis, a distinctive exotic species of East Asian origin, has recently spread across the Northeast and Midwest regions of the country (Hinojosa-Díaz 2008; Magnum & Brooks 1997). It was first recorded from Michigan in 2008 from Wayne and Cheboygan Counties in the southeast and north of the LP, respectively (O’Brien & Craves 2008). The species, known to have been present in the state from at least 2006 (see below; the first Illinois specimen was also collected that year, see Tonietto & Ascher 2009), is active in midsummer. It is known to nest in active Xylocopa virginica burrows in dead wood (Laport & Minckley 2012; Roulston & Malfi 2012) and has been observed in Michigan removing nesting materials of other Megachile species from trap nests (JG pers. obs.).

Material examined. Ingham Co.: East Lansing, Sep. 2006, P. Giordano (1 ♀ MSUC) ; East Lansing, MSU, N42.72 W84.473, 18 Jul. 2014 (2 ♂), 21 Aug. 2013 (1 ♀) (JBWM) ; East Lansing, MSU, Natural Science Bldg., 13 Jul. 2011, Stphynolobium japonicum, G. Parsons (3 ♀ 11 ♂ MSUC) ; East Lansing, MSU, Natural Science Bldg., 20 Aug. 2009, Sophora japonica, G. Parsons (16 ♀ MSUC) ; East Lansing, MSU, Radiology Bldg. N42717 W84.467, 20 Jul. 2014, J. Gibbs (1 ♀ JBWM) ; Lansing area, Nielsen residence, T4N R2W S7, 2 Jul.2006, M.C. Nielsen (1 ♀ MSUC) ; Lansing, Saginaw /MLK blvd., stem nest side of house, 18 Aug. 2008, R. Isaacs (2 ♀ MSUC) ; Kent Co.: (unknown locality) 3 Jul. 2012, M. Vanderwerp (1? MVWC); Oakland Co.: 26 Jul. 2014, M. Vanderwerp (MVWC); Osceola Co.: Leroy, 1.5 km SW, N44.0311 W85.4729, 26 Jun. 2015, J. Gibbs (1 ♀ JBWM) ; Shiawassee Co.: North of Perry (C. Sheffield and J. Gibbs pers. obs. 2006).