T. longispinosus T. americanus Invasion (image) Johannes Gutenberg Universitaet Mainz Share Print E-Mail Caption Workers of the host species Temnothorax longispinosus are fighting a slightly larger worker of the T. americanus slave-maker species that has invaded their colony. Credit photo/©: Susanne Foitzik Usage Restrictions This image may only be used in connection with the press release "Division of labor in social insects: All-rounders cope better with threats than specialists", issued by Johannes Gutenberg University Mainz on March 8, 2016. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.