The genus Lasioglossum is used by Michener to include the following subgenera that were previously recognized as distinct genera. More recently the subgenera have been extensively revised - Gibbs 2013 Zootaxa 3672: 1-116.
1. Second recurrent vein and third intercubital vein reduced (weak), finer or lighter than more basal veins.. Subgenus Lasioglossum
Second recurrent vein, third and second intercubital veins reduced..2
2. Integument metallic..Subgenus Dialictus
Integument black, lacking metallic reflections..Subgenera Hemihalictus and Evylaeus
