Kempf, W. W. 1968a. A new species of Cyphomyrmex from Colombia, with further remarks on the genus (Hymenoptera, Formicidae). Revista Brasileira de Biologia 28:35-41. PDF

Kempf, W. W. 1968b. Miscellaneous studies on Neotropical ants. IV. (Hymenoptera, Formicidae). Studia Entomologica 11:369-415. PDF

Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF

Keller, R. A. 2000. Cladistics of the tribe Ectatommini (Hymenoptera: Formicidae): a reappraisal. Insect Systematics and Evolution 31:59-69. PDF

Keller, R. A. 2011. A phylogenetic analysis of ant morphology (Hymenoptera: Formicidae) with special reference to the poneromorph subfamilies. Bulletin of the American Museum of Natural History 355:1-90. PDF

Keilbach, R. 1982. Bibliographie und Liste der Arten tierischer Einschlüsse in fossilen Harzen sowie ihrer Aufbewahrungsorte. Teil 1. Deutsche Entomologische Zeitschrift (N.F.)29:129-286.

Notes: Formicidae pp. 272-281.

Kempf, W. W. 1949. A new species and subspecies of Procryptocerus from Espírito Santo, Brazil (Hymenoptera, Formicidae). Revista de Entomologia (Rio de Janeiro) 20:423-426. PDF

Kempf, W. W. 1951. A taxonomic study on the ant tribe Cephalotini (Hymenoptera: Formicidae). Revista de Entomologia (Rio de Janeiro) 22:1-244. PDF

Kempf, W. W. 1952. A synopsis of the pinelii-complex in the genus Paracryptocerus (Hym. Formicidae). Studia Entomologica 1:1-30. PDF

Kempf, W. W. 1953. Uma nova espécie de Paracryptocerus da Colômbia, praga do cafeeiro (Hymenoptera, Formicidae). Papeis Avulsos de Zoologia (São Paulo) 11:79-88. PDF

Kempf, W. W. 1954. A descoberta do primeiro macho do gênero Thaumatomyrmex Mayr (Hymenoptera, Formicidae). Revista Brasileira de Entomologia 1:47-52. PDF

Kempf, W. W. 1957. Sôbre algumas espécies de Procryptocerus com a descrição duma espécie nova (Hymenoptera, Formicidae). Revista Brasileira de Biologia 17:395-404. PDF

Kempf, W. W. 1958a. New studies of the ant tribe Cephalotini (Hym. Formicidae). Studia Entomologica (n.s.)1:1-168.

Kempf, W. W. 1958b. Three new ants of the genus Strumigenys from Colombia (Hym. Formicidae). Revista Brasileira de Entomologia 8:59-68. PDF

Kempf, W. W. 1958c. Sôbre algumas formigas neotrópicas do gênero Leptothorax Mayr (Hymenoptera: Formicidae). Anais da Academia Brasileira de Ciencias 30:91-102. PDF

Kempf, W. W. 1958d. Synonymic note on ants of the genus Paracryptocerus Emery (Hymenoptera: Formicidae). Entomological News 69:108-110. PDF

Kempf, W. W. 1958e. Discovery of the ant genus Wadeura in Brazil (Hymenoptera: Formicidae). Revista Brasileira de Entomologia 8:175-180. PDF

Kempf, W. W. 1958f. Estudos sôbre Pseudomyrmex. II. (Hymenoptera: Formicidae). Studia Entomologica (n.s.)1:433-462.

Kempf, W. W. 1958g. The ants of the tribe Dacetini in the State of Sao Paulo, Brazil, with the description of a new species of Strumigenys. (Hymenoptera: Formicidae). Studia Entomologica (n.s.)1:553-560. PDF

Kempf, W. W. 1959a. Sôbre algumas formigas Cephalotini do Museu de Oxford (Hymenoptera, Formicidae). Revista Brasileira de Biologia 19:91-98. PDF

Kempf, W. W. 1959c. A revision of the Neotropical ant genus Monacis Roger (Hymenoptera: Formicidae). Studia Entomologica (n.s.)2:225-270. PDF

Kempf, W. W. 1959d. A synopsis of the New World species belonging to the Nesomyrmex-group of the ant genus Leptothorax Mayr (Hymenoptera: Formicidae). Studia Entomologica (n.s.)2:391-432. PDF

Kempf, W. W. 1959f. Two new species of Gymnomyrmex Borgmeier, 1954 from southern Brazil, with remarks on the genus (Hymenoptera, Formicidae). Revista Brasileira de Biologia 19:337-344. PDF

Kempf, W. W. 1960a. Estudo sôbre Pseudomyrmex I. (Hymenoptera: Formicidae). Revista Brasileira de Entomologia 9:5-32. PDF

Kempf, W. W. 1960b. Phalacromyrmex, a new ant genus from southern Brazil (Hymenoptera, Formicidae). Revista Brasileira de Biologia 20:89-92. PDF

Kempf, W. W. 1960c. Tranopeltoides Wheeler, a synonym of Crematogaster Lund (Hymenoptera, Formicidae). Entomological News 71:173-175. PDF

Kempf, W. W. 1960d. A review of the ant genus Mycetarotes Emery (Hymenoptera, Formicidae). Revista Brasileira de Biologia 20:277-283. PDF

Kempf, W. W. 1960e. Insecta Amapaensia. - Hymenoptera: Formicidae (segunda contribuição). Studia Entomologica (n.s.)3:385-400.

Kempf, W. W. 1960f. Miscellaneous studies on Neotropical ants (Hymenoptera, Formicidae). Studia Entomologica (n.s.)3:417-466. PDF

Kempf, W. W. 1961a. Estudos sôbre Pseudomyrmex. III. (Hymenoptera: Formicidae). Studia Entomologica 4:369-408. PDF