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 densa Mitchell , new comb. Megachile densa Mitchell 1930: 257 . Female. Type locality: La Rioja, Argentina. Type repository: MCZ 16205. Examined.