Osmia (Hoplosmia) fallax Pérez, 1895

Renter: Snail shells (e.g. Sphincterophila candidissima) with 1-4 cells per shell.

Nesting material: Unknown. (Moreno-Rueda, Marfil-Daza, Ortiz-Sanchez and Melic, 2008; J. Ortiz-Sanchez, personal communication)