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Polistes rubiginosus
Coarse-backed Red Paper Wasp
Polistes rubiginosus is a social paper wasp endemic to the eastern United States, formerly known as Polistes perplexus until taxonomic revision in 2012. It is one of two large red-colored Polistes species in the eastern US, distinguished from the similar P. carolina by coarser transverse ridging on the propodeum and, in females, silvery pubescent hairs covering the malar area and gena. The species builds uncovered paper nests in sheltered locations and exhibits typical paper wasp ecology as a predator of caterpillars.