<ref name="Wu_1990">{{cite journal |first1=J. |last1=Wu |year=1990 |title=Taxonomic studies on the genus ''Formica'' L. of China (Hymenoptera: Formicidae). [In Chinese.] |url=https://antcat.org/documents/3741/3516.pdf |journal=Forest Research |publisher= |volume=3 |issue= |pages=1–8 |doi= }}</ref>