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. 1905b. New Hymenoptera from the Philippines. Proceedings of the United States National Museum 29:107-119. PDF

Notes: Two new ant species described pp. 110-112. Colobopsis albocincta, Aphomyrmex emeryi.

Snodgrass, R. E. 1910. The thorax of the Hymenoptera. Proceedings of the United States National Museum 39:37-91.

Cockerell, T. D. A. 1915. British fossil insects. Proceedings of the United States National Museum 49:469-499. PDF

Cockerell, T. D. A. 1921. Some Eocene insects from Colorado and Wyoming. Proceedings of the United States National Museum 59:29-39. PDF

Mann, W. M. 1922. Ants from Honduras and Guatemala. Proceedings of the United States National Museum 61:1-54. PDF