Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Range
Costa Rica: lowland Atlantic rainforest (Hitoy Cerere, Turrialba, La Selva).
Identification
Antennae 7 segmented; face densely punctulate, mat (not shiny); interantennal lamella subtriangular in lateral view; lamella relatively large compared to humilis, with ventral margin originating at anterior border of clypeus, such that in side view ventral portion of lamella is usually visible; clypeus projecting relatively farther beyond mandibles, compared to humilis; anterior border of clypeus somewhat truncate in face view; color uniformly red brown.
Notes
For general observations on biology of genus, see horni.
In Costa Rica, I have seen only two worker collections, in Winkler samples of forest floor leaf litter, from two Atlantic lowland sites:
Cartago: CATIE, nr. Turrialba, 9¡54'N, 83¡39'W, 550m, 13 May 1987 (coll. J. Longino).
Limon: Hitoy Cerere Biol. Reserve, 9¡40'N, 83¡02'W, 200m, 29 Aug 1985 (coll. J. Longino)
The ALAS project at La Selva produced two alate queens, one from each of two canopy fogging events at dawn. The queens have short, white, erect pubescence, while the JTL-004 workers do not. However, the structure of the clypeus is identical for the workers and the queens, and I tentatively identify the queens as JTL-004.
See additional notes regarding the humilis complex under humilis.
Page author:
John T. Longino, The Evergreen State College, Olympia WA 98505 USA.longinoj@evergreen.edu
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