New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae) Author Raw, Anthony text Zootaxa 2002 71 1 43 journal article 51436 10.5281/zenodo.155887 29fc5ef3-a547-4eb8-9753-8085aa3f215e 1175­5326 155887 brethesi Schrottky , new comb. Megachile Brethesi Schrottky 1909 : 220 . Female. Type locality: Assuncion, Paraguay . Based on my specimens determined by Padre Moure the species is tentatively placed in this subgenus. Megachile atricostifera Strand 1910 : 534 . Female. Type locality: Villa Mora, Paraguay . Synonymy of Schrottky 1913a : 194.