worker caste polymorphic

Refers to a worker caste which shows a large, continuous range in size from small to large workers. In general majors differ from minors in overall body length as well as in having relatively larger heads. Polymorphic taxa in Antkey include Anoplolepis custodiens, Acromyrmex, Atta, Camponotus, some Cephalotes species, Monomorium destructor, and all Solenopsis species except for Solenopsis papuana.