Genus Leptothorax Mayr ^HNS

The ant genus Leptothorax ^HNS formerly comprised a large and heterogeneous assemblage of species but Bolton (2003) redefined it to include only those species closely related to L. acervorum Fabricius ^HNS. Most California species previously placed in Leptothorax ^HNS are now assigned to Temnothorax Mayr ^HNS (see below), with two species remaining in Leptothorax ^HNS.