<ref name="Sturtevant_1931">{{cite journal |first1=A. H. |last1=Sturtevant |year=1931 |title=Ants collected on Cape Cod, Massachusetts |url=http://hymfiles.biosci.ohio-state.edu/pdfs-osuc/23178/23178.pdf |journal=Psyche (Cambridge) |publisher= |volume=38 |issue= |pages=73–79 |doi= }}</ref>