Ectatomminae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
Figure of queen mandible, from Brown (1965).
Costa Rica (Central Valley).
Mandible subfalcate, without well-differentiated basal margin.
This species was described from a single holotype queen, collected by Schmidt in the vicinity of San Jose in 1940. The diagnosis from Brown (1965) is as follows:
A medium-sized Typhlomyrmex with unusually elongate, narrowly subtriangular mandibles; basal border short and curving broadly into long, indistinctly denticulate masticatory border; apical tooth very long and acute. Petiolar node as seen from above broader than long, with feebly concave (almost straight) anterior border and strongly concave posterior border. Postpetiole with a distinct, sharp median longitudinal carina on the anterior third of its dorsal surface.
Additional description included the measurements HL 0.72, HW (without eyes) 0.63, SL 0.52.
Typhlomyrmex prolatus Brown 1965:72. Holotype queen: Costa Rica, San Jose (Schmidt) [Kempf collection].
Brown, W. L., Jr. 1965. Contributions to a reclassification of the Formicidae. IV. Tribe Typhlomyrmecini (Hymenoptera). Psyche (Camb.) 72:65-78.
John T. Longino, The Evergreen State College, Olympia WA 98505 USA.email@example.com
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