@article{article2caaebff,
title   = {Morphological caste diferences in the neotropical swarm-founding polistine wasps: parachartergus smithii (Hymenoptera: Vespidae)},
author = {Mateus, Sidnei and Noll, Fernando Barbosa and Zucchi, Ronaldo},
year = {1997},
journal   = {Journal of New York Entomological Society}
}