Atanassov, N. 1934. Contribution to a study of the ant fauna (Formicidae) of Bulgaria. [In Bulgarian.]. Izvestiya na Bulgarskoto Entomologichno Druzhestvo 8:159-173.

Atanassov, N. 1936. Second contribution to a study of the ant fauna (Formicidae) of Bulgaria. [In Bulgarian.]. Izvestiya na Bulgarskoto Entomologichno Druzhestvo 9:211-236.

Atanassov, N. 1952. Regularities in the distribution and biological observations on ants in the Vitosha Mountains. [In Bulgarian.]. Sofia: Bulgarska Akademiya na Naukite, 214 pp.

Atanassov, N. 1965. Étude sur la biologie et la répartition de Monomorium pharaonis L. (Hym. Formicidae) en Bulgarie et dans la péninsule balkanique. Bulletin de la Société Entomologique de Mulhouse 1965:86-95.

Atanassov, N. 1974. Besonderheiten der Nahrungszusammensetzung von Formica rufa L. und Formica lugubris Zett. in Bulgarien. Waldhygiene 10:183-185.

Attewell, P. 1993. Ants: notes and observations for 1992. Transactions of the Hertfordshire Natural History Society 31:326.

Attewell, P. 1994. Report for ants, 1993. Transactions of the Hertfordshire Natural History Society 32:20.

Attewell, P. 1995. Report for ants, 1994. Transactions of the Hertfordshire Natural History Society 32:211-212.

Attygalle, A. B.; Billen, J. P. J.; Jackson, B. D.; Morgan, E. D. 1990. Morphology and chemical contents of Dufour glands of Pseudomyrmex ants (Hymenoptera: Formicidae). Zeitschrift für Naturforschung. C, Journal of Biosciences 45:691-697.

Attygalle, A. B.; Billen, J. P. J.; Morgan, E. D. 1985. The postpharyngeal gland of workers of Solenopsis geminata (Hymenoptera: Formicidae). Actes des Colloques Insectes Sociaux 2:75-86.

Attygalle, A. B.; Evershed, R. P.; Morgan, E. D.; Cammaerts, M. C. 1983. Dufour gland secretions of workers of the ants Myrmica sulcinodis and Myrmica lobicornis, and comparison with six other species in Myrmica. Insect Biochemistry 13:507-512.

Attygalle, A. B.; Morgan, E. D. 1984. Chemicals from the glands of ants. Chemical Society Reviews 13:245-278.

Attygalle, A. B.; Morgan, E. D. 1985. Ant trail pheromones. Advances in Insect Physiology 18:1-30.

Attygalle, A. B.; Siegel, B.; Vostrowsky, O.; Bestmann, H. J.; Maschwitz, U. 1989. Chemical composition and function of metapleural gland secretion of the ant Crematogaster deformis Smith (Hymenoptera: Myrmicinae). Journal of Chemical Ecology 15:317-328.

Auel, H. 1937. Verzeichnis der in der Mark Brandenburg beobachteten Formiciden (Hymenoptera). Märkische Tierwelt 3:17-21.

Notes: Not seen. Cited in Stitz (1939:393) and Seifert (1994a:42.

Ayre, G. L. 1967. The relationships between food and digestive enzymes in five species of ants (Hymenoptera: Formicidae). Canadian Entomologist 99:408-411.

Azuma, M. 1938. A list of ants found in Osaka Prefecture, Japan. [In Japanese.]. Entomological World. Tokyo 6:238-243. PDF

Azuma, M. 1950b. Camponotus (s. str.) herculeanus (Linnaeus) subsp. ligniperda (Latreille) var. obscuripes Mayr 1878. [In Japanese.]. Entomological Review of Japan 5:47-48. PDF

Aron, S.; Passera, L.; Keller, L. 1994. Queen-worker conflict over sex ratio: a comparison of primary and secondary sex ratios in the Argentine ant, Iridomyrmex humilis. Journal of Evolutionary Biology 7:403-418.

Aron, S.; Vargo, E. L.; Passera, L. 1995. Primary and secondary sex ratios in monogyne colonies of the fire ant. Animal Behavior 49:749-757.

Ashmead, W. H. 1888. A proposed natural arrangement of the Hymenopterous families. Proceedings of the Entomological Society of Washington 1:96-99. PDF

Ashmead, W. H. 1890. On the Hymenoptera of Colorado: descriptions of new species, notes and a list of the species found in the state. Bulletin of the Colorado Biological Association 1:1-47. PDF

Notes: Ants listed on pp. 36-37. No new taxa.

Ashmead, W. H. 1892. The insect collections in the Berlin Museum. Proceedings of the Entomological Society of Washington 2:205-209. PDF

Ashmead, W. H. 1896. The phylogeny of the Hymenoptera. Proceedings of the Entomological Society of Washington 3:323-336. PDF

Ashmead, W. H. 1900. Report upon the Aculeate Hymenoptera of the Islands of St. Vincent and Grenada, with additions to the Parasitic Hymenoptera and a list of the described Hymenoptera of the West Indies. Transactions of the Entomological Society of London 1900:207-367. PDF

Notes: Ants pp. 316-323.

Ashmead, W. H. 1902. Papers of the Harriman Alaska Expedition. XXVIII. Hymenoptera. Proceedings of the Washington Academy of Sciences 4:117-274. PDF

Notes: List of ant species pp. 135-136. No new ant taxa.

Ashmead, W. H. 1904a. A list of the Hymenoptera of the Philippine Islands, with descriptions of new species. Journal of the New York Entomological Society 12:1-22. PDF

Notes: List of ant species pp. 9-11. No new ant taxa.

Ashmead, W. H. 1904b. Descriptions of new genera and species of Hymenoptera from the Philippine Islands. Proceedings of the United States National Museum 28:127-158. PDF

Notes: No new ant taxa. Repeats the list of ant species in Ashmead (1904a).

Ashmead, W. H. 1905a. Additions to the recorded Hymenopterous fauna of the Philippine Islands, with descriptions of new species. Proceedings of the United States National Museum 28:957-971. PDF

Notes: No new ant taxa.

Ashmead, W. H. 1905d. Doctor Ashmead's new classification of the Poneridae. Pp. 38-41 in: Cook, O. F. 1905. The social organization and breeding habits of the cotton-protecting kelep of Guatemala. United States Department of Agriculture. Bureau of Entomology. Technical Series 10:1-55.