<ref name="Collingwood_1957">{{cite journal |first1=C. A. |last1=Collingwood |year=1957 |title=A collection of ants (Hym. Formicidae) in the Leicester City Museum. [part] |url= |journal=Entomologist's Record and Journal of Variation |publisher= |volume=69 |issue= |pages=167–170 |doi= }}</ref>