<ref name="Traniello_1978">{{cite journal |first1=J. F. A. |last1=Traniello |year=1978 |title=Caste in a primitive ant: absence of age polyethism in ''Amblyopone'' |url= |journal=Science (Washington, D. C.) |publisher= |volume=202 |issue= |pages=770–772 |doi= }}</ref>