<ref name="Feldhaar_et_al_2008">{{cite journal |first1=H. |last1=Feldhaar |first2=S. |last2=Foitzik |first3=J. |last3=Heinze |year=2008 |title=Lifelong commitment to the wrong partner: hybridization in ants |url=https://antcat.org/documents/4368/Feldhaar_et_al_2008_Phil_Trans_R_Soc_B.pdf |journal=Philosophical Transactions of the Royal Society of London. B. Biological Sciences |publisher= |volume=363 |issue= |pages=2891–2899 |doi= }}</ref>