Megachile (Megachiloides) pascoensis Mitchell, 1934

Megachile (Xeromegachile) pascoensis Mitchell, 1934: 320 .

Megachile (Derotropis) pascoensis; Mitchell 1944: 142. Hurd 1979: 2062.

Megachile (Megachiloides) pascoensis; Raw 2002: 16. Kuhlman and Burrows 2017: 13.

Megachile gabrielensis Michell, 1934: 346; 1936: 159.

Diagnosis. The female of M. pascoensis can be identified by its 3-toothed mandibles (Fig. 7A) and pitted, dull T6 with punctures ≤ 1 diameter apart. The females are most similar to M. anograe (see M. anograe above). The male of M. pascoensis can be identified by its clypeal margin, which has a deep U-shaped median emargination (as deep as wide) (Fig. 10A) and the white apical setal band on T5.

Notes. This distinctive species is rare outside of California. In Montana, it is known from a historical record (Mitchell 1934) and two specimens from Missoula County (Kuhlman & Burrows 2017) (Fig. 1 AA). The species was first described in Mitchell (1934) (male = M. pascoensis; female = M. gabrielensis) and has not been redescribed or illustrated since. Photographs of the types of both sexes can be found on Big-Bee (Seltmann et al. 2021).