Genus Lasius Fabricius

A close relationship between Acanthomyops Mayr and Lasius has long been recognized (Creighton 1950a, Wilson 1955a, Wing 1968a). Recent molecular studies (Savolainen 2002, Janda et al. 2004) demonstrate that Acanthomyops is nested phylogenetically within Lasius . To maintain monophyly for Lasius, Acanthomyops cannot be treated as a separate genus. It is here returned to the status of subgenus (stat. rev.) in Lasius, which generates revised or new combinations in Lasius for the following species names: arizonicus comb. rev., bureni comb. nov., californicus comb. rev., claviger comb. rev., clavigeroides comb. rev., colei comb. nov., coloradensis comb. rev., creightoni comb. nov., interjectus comb. rev., latipes comb. rev., mexicanus comb. rev., murphyi comb. rev., occidentalis comb. rev., parvula comb. rev., plumopilosus comb. rev., pogonogynus comb. rev., pubescens comb. rev., and subglaber comb. rev.