<ref name="Collingwood_&_Prince_1998">{{cite journal |first1=C. |last1=Collingwood |first2=A. |last2=Prince |year=1998 |title=A guide to ants of continental Portugal (Hymenoptera: Formicidae) |url= |journal=Boletim da Sociedade Portuguesa de Entomologia. Suplemento |publisher= |volume=5 |issue= |pages=1–49 |doi= }}</ref>