campanulae (Robertson), new comb.

Oligotropus campanulae Robertson 1903: 171 . Male and female. Type locality: Carlinville, Illinois [U.S.A.].

Megachile campanulae Cockerell 1908d: 292 .

Oligotropus wilmingtoni Mitchell 1924: 156. Synonymy of Mitchell 1937d: 391.

Megachile (Chelostomoides) campanulae Mitchell 1937d: 389 ­390.

Megachile (Chelostomoides) campanulae campanulae Mitchell 1962: 182 ­184.

Megachile (Chelostomoides) campanulae wilmingtoni Mitchell 1962: 184 .

Megachile (Chelostomoides) campanulae var. wilmingtoni Krombein 1967: 341 ­342. Synonymy of Snelling 1990: 13.

Chalicodoma (Chelostomoides) campanulae campanulae Hurd 1979: 2073 .

Chalicodoma (Chelostomoides) campanulae wilmingtoni Hurd 1979: 2074 .

Chalicodoma (Chelostomoides) campanulae Snelling 1990: 13, 18­19.