The Texas leafcutting ant (Atta texana) is the northernmost species of leafcutting ant, and it’s a threat to continue moving northward in the United States, because the fungi that the ant cultivates are more cold-tolerant than the fungi used by tropical ant species. A new guide in the open-access Journal of Integrated Pest Management reviews current information on the Texas leafcutting ant. (Photo credit: Susan Ellis, Bugwood.org)