<ref name="Smith_1855">{{cite journal |first1=F. |last1=Smith |year=1855 |title=Essay on the genera and species of British Formicidae. [part] |url=https://antcat.org/documents/5141/2585.pdf |journal=Transactions of the Entomological Society of London |publisher= |volume=3 |issue= |pages=95–112 |doi= }}</ref>