Thaumatomyrmex atrox Weber 1939

Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker lateral view

worker face view


Costa Rica, Panama, Guyana (type locality), Trinidad, Colombia, Peru, Bolivia (Kempf 1975, Longino 1988). Costa Rica: La Selva Biological Station.


Mandible with a small basal tooth, in addition to the three long tines; head width 1.29mm (n=1). See notes.

Natural History

In Costa Rica, this species is known from a single specimen, from La Selva Biological Station (SSE 700), in a berlese sample of litter and soil from the forest floor. A Brazilian species, Thaumatomyrmex mutilatus, is a specialist predator of polyxenid millipedes (Brandao et al. 1991), and thus atrox may be as well.

Type Data

Thaumatomyrmex atrox Weber 1939:98. Holotype worker: Guyana, junction of Mazaruni and Cuyuni Rivers.

Literature Cited

Brandao, C. R. F., J. L. M. Diniz, and E. M. Tomotake. 1991. Thaumatomyrmex strips millipedes for prey, a novel predatory behaviour in ants and the first case of sympatry in the genus. Insectes Soc. 38:335-344.

Kempf, W. W. 1975. A revision of the Neotropical ponerine ant genus Thaumatomyrmex Mayr (Hymenoptera: Formicidae). Stud. Entomol. 18:95-126.

Longino, J. T. 1988. Notes on the taxonomy of the neotropical ant genus Thaumatomyrmex Mayr (Hymenoptera: Formicidae). In J. C. Trager (ed.), Advances in Myrmecology, pp. 35-42. E. J. Brill, New York.

Weber, N. A. 1939. New ants of rare genera and a new genus of ponerine ants. Ann. Entomol. Soc. Am. 32:91-104.

Page author:

John T. Longino, The Evergreen State College, Olympia WA 98505

Date of this version: 1 June 1999
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