Dacetini, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Range
Costa Rica: Cordillera Volcanica Central, Barva transect from 1100-1500m.
Identification
Mandible short and curving downward in profile; lateral head capsule with the antennal scrobe mostly or entirely smooth and shining; propodeal spines present (former Glamyromyrmex); leading edge of scape lacking erect setae; disc of postpetiole in dorsal view very broadly U-shaped or V-shaped, with an extremely deeply concave anterior face; spongiform tissue absent from ventral surface of petiole, postpetiole and first gastral sternite; face lacking erect setae; head in side view convex above and below, not flattened; pronotum in dorsal view elongate, anterior margin strongly convex, rounding into lateral margins; pronotal humeral hair absent; dorsum of petiolar node strongly reticulate rugose; gaster in lateral view relatively elliptical, not strongly concave near postpetiolar insertion.
Similar species: rogata.
Natural History
Members of the genus are all predaceous, with a static pressure mode of attack (Bolton 1999, 2000).
This species occurs in cloud forest. It is known from four workers from four different Winkler samples of sifted litter from the forest floor.
Literature Cited
Bolton, B. 1999. Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). J. Nat. Hist. 33:1639-1689.
Bolton, B. 2000. The ant tribe Dacetini, with a revision of the Strumigenys species of the Malagasy Region by Brian L. Fisher, and a revision of the Austral epopostrumiform genera by Steven O. Shattuck. Memoirs of the American Entomological Institute 65:1-1028.
Page author:
John T. Longino, The Evergreen State College, Olympia WA 98505 USA.longinoj@evergreen.edu
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