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Yarrow, I. H. H. 1956. Formica rufa L. (Hym., Formicidae) in Oxfordshire. Entomologist's Monthly Magazine 92:8.
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Yarrow, I. H. H. 1954b. Formica exsecta Nylander (Hym., Formicidae) in the British Isles. Entomologist's Monthly Magazine 90:183-185.
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Yarrow, I. H. H. 1955b. The British Strongylognathus (Hym., Formicidae). Journal of the Society for British Entomology 5:114-115.
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Yasumatsu, K. 1935. Further notes on the hymenopterous fauna of the Yaeyama Group. Annotationes Zoologicae Japonenses 15:33-45. PDF

Notes: Ants pp. 34, 36.

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Yasumatsu, K. 1940a. Contributions to the hymenopterous fauna of Inner Mongolia and North China. Transactions of the Sapporo Natural History Society 16:90-95. PDF

Notes: Ants p. 91.

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Yasumatsu, K. 1940e. Ants from Kyusyu. [In Japanese.]. Kyodo Shizen 5:1-5.

Notes: Not seen. Cited in Okano (1989) and Onoyama & Terayama (1994).

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

Notes: Ants pp. 36-37.

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

Notes: Ants pp. 112-117.

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Wroughton, R. C. 1892. Our ants. Part I. Journal of the Bombay Natural History Society 7:13-60.
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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.
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Würmli, M. 1969. Due interessanti reperti mirmecologici per la fauna d'Italia (Hymenoptera, Formicidae). Bollettino della Società Entomologica Italiana 99-101:208-210.
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Yamane, S.; Harada, Y.; Yano, M. 1985. Ant fauna of Tanega-shima Island, the northern Ryukyus (Hymenoptera, Formicidae). Memoirs of the Kagoshima University Research Center for the South Pacific 6:166-173.
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Yamauchi, K. 1968. Additional notes on the ecological distribution of ants in Sapporo and the vicinity. Journal of the Faculty of Science, Hokkaido University. Series VI. Zoology 16:382-395.
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Tamura, H.; Nakamura, Y.; Yamauchi, K.; Fujikawa, T. 1969. An ecological survey of soil fauna in Hidaka-Mombetsu, southern Hokkaido. Journal of the Faculty of Science, Hokkaido University. Series VI. Zoology 17:17-57.
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Yamauchi, K. 1969. Ants. Pp. 28-31 in: Tamura, H.; Nakamura, Y.; Yamauchi, K.; Fujikawa, T. 1969. An ecological survey of soil fauna in Hidaka-Mombetsu, southern Hokkaido. Journal of the Faculty of Science, Hokkaido University. Series VI. Zoology 17:17-57.
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