LEPTOTHORAX-PARAXENUS NEW-SPECIES A WORKERLESS SOCIAL PARASITE FROM NORTH AMERICA HYMENOPTERA FORMICIDAE

Abstract

Male, gynomorphic and intermorphic female or the myrmicine ant Leptothorax paraxenus are described. The new species apparently is a workerless social parasite, which lives in nests of Leptothorax sp. B of the L. "muscorum" (L. canadensis) complex. Colonies were found in Milton and Mississauga, Ontario [Canada], and in Bic, Quebec. L. paraxenus differs from other Leptothorax in its "inflated" petiole and a convex subpetiolar process.