Wray, D. L. 1950. Insects of North Carolina. Second supplement. Raleigh: North Carolina Department of Agriculture, 59 pp.

Notes: Ants pp. 36-37.

Wray, D. L. 1967. Insects of North Carolina. Third supplement. Raleigh: North Carolina Department of Agriculture, 181 pp.

Notes: Ants pp. 112-117.

Wroughton, R. C. 1892. Our ants. Part I. Journal of the Bombay Natural History Society 7:13-60.
Wroughton, R. C. 1892. Our ants. Part II. Journal of the Bombay Natural History Society 7:175-203.
Wu, C. F. 1941. Catalogus insectorum Sinensium. Volume VI. Peiping [= Beijing]: Yenching University, x + 334 pp.

Notes: Formicoidea: pp. 141-204.

Wu, H. (ed.) 1995. Insects of Baishanzu Mountain, eastern China. [In Chinese.]. Beijing: China Forestry Publishing House, xiii + 586 pp.
Wu, J.; Wang, C. 1992c. Hymenoptera: Formicidae. [In Chinese.]. Pp. 1301-1320 in: Peng, J.; Liu, Y. (eds.) 1992. Iconography of forest insects in Hunan, China. Hunan: Hunan Scientific and Technical Publishing House, 1473 pp. PDF
Wu, J.; Wang, C. 1994. A new genus of ants from Yunnan, China (Hymenoptera: Formicidae: Formicinae). Journal of Beijing Forestry University (English Edition) 3(1):35-38. PDF
Wu, J.; Wang, C. 1995a. The ants of China. [In Chinese.]. Beijing: China Forestry Publishing House, x + 214 pp.
Wu, J.; Wang, C. 1995b. Hymenoptera: Formicidae. [In Chinese.]. Pp. 570-572 in: Wu, H. (ed.) 1995. Insects of Baishanzu Mountain, eastern China. [In Chinese.]. Beijing: China Forestry Publishing House, xiii + 586 pp.
Würmli, M. 1969. Due interessanti reperti mirmecologici per la fauna d'Italia (Hymenoptera, Formicidae). Bollettino della Società Entomologica Italiana 99-101:208-210.
Xia, Y.; Zheng, Z. 1997a. A survey of Formicidae from Xinjiang. [In Chinese.]. Journal of Shaanxi Normal University. Natural Science Edition 25(2):64-66. PDF
Xia, Y.; Zheng, Z. 1997b. A new species of the genus Formica from Xinjiang. [In Chinese.]. Journal of Hubei University (Natural Science) 19:391-392. PDF