<ref name="Wheeler_1908">{{cite journal |first1=W. M. |last1=Wheeler |year=1908 |title=The ants of Casco Bay, Maine, with observations on two races of ''Formica'' ''sanguinea'' Latreille |url=https://antcat.org/documents/3439/10549.pdf |journal=Bulletin of the American Museum of Natural History |publisher= |volume=24 |issue= |pages=619–645 |doi= }}</ref>