The purpose of this petition, under Articles 23.9.3 and 81.2.3 of the Code, is to give the widely used halictine bee generic names Dialictus and Evylaeus, both proposed by Robertson in 1902, precedence over the rarely used but older names Hemihalictus Cockerell, 1897, Sudila Cameron, 1898 and Sphecodogastra Ashmead, 1899 whenever these names are considered to be synonyms. This proposal is intended to best conserve the standard usage of these names.
Dialictus Robertson, 1902 and Evylaeus Robertson, 1902 (Insecta, Hymenoptera): proposed precedence over Hemihalictus Cockerell, 1897, Sudila Cameron, 1898 and Sphecodogastra Ashmead, 1899," The Bulletin of Zoological Nomenclature 66(2), 147-158, (1 June 2009). https://doi.org/10.21805/bzn.v66i2.a4
