Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Range
The type locality of humilis is Panama. I have seen humilis-like forms, each slightly different from the other, from Costa Rica, Dominican Republic, Venezuela, Colombia, and Ecuador. In Costa Rica, I have seen workers from Hitoy Cerere and Turrialba, and alate queens from La Selva.
Identification
Antennae 7 segmented; face densely punctulate, mat (not shiny); interantennal lamella subtriangular in lateral view; lamella relatively large compared to JTL-001, 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 JTL-001; 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 humilis workers do not. However, the structure of the clypeus is identical for the workers and the queens, and I tentatively identify the queens as humilis.
Type data
Discothyrea humilis Weber 1939:100. Two syntype dealate queens: Panama, Barro Colorado Island (Weber). "One female was found among decayed leaves and humus on a fallen log, the other in debris swept down by a swollen stream from the forest."
Literature Cited
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 USA.longinoj@evergreen.edu
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