It’s typically made of sand, soil, and other materials that are pushed up as the ants tunnel around underneath the surface.

Here, he stumbled upon an ant collection made by the evolutionary biologist Ross Crozier in the 1970s. While indexing the genetics of southern Aphaenogaster species, Crozier found that A. rudis ...

Free ant collection kits can be requested at stoptheant.org. MISC photo Eight sites are under active treatment. Six sites are in the monitoring phase — with ants not currently detected — and ...