Eumenes crucifera: This species of wasp is a type of potter wasp. While not much information was found about this specific species, other wasps in the genus Eumenes build tiny, jug-like mud nests that are usually attached to twigs. The female wasp will sting and paralyze a prey item (often caterpillars) to serve as food for the single egg she lays in one jug (cell). The adult wasps feed on flower nectar. Photo by Glenn Marangelo on 8/16/18 near Condon, MT.