Formicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Range
Costa Rica, Colombia, southern Brazil. Costa Rica: throughout country to about 1000m elevation.
Identification
Minor worker: Propodeum lacking spines or tubercles of any kind; propodeum somewhat box-like, dorsal and lateral faces flat or nearly flat and meeting at an approximate right angle; dorsal face of propodeum subrectangular; pubescence on first gastral tergite dilute, appressed to suberect, not obscuring integument; color black; propodeum not strongly projecting, forming part of continuous dorsal profile of mesosoma; in face view side of head mostly lacking erect setae, a few setae near mandibular insertion and posterior to eye; dorsal and posterior faces of propodeum meeting at relatively sharp angle; propodeum somewhat elevated.
Similar species: JTL-056.
Natural History
This species inhabits wet to moist climate areas, in mature forest or second growth vegetation. In lowland sites it can occur in both mature and second growth forest, but at higher elevations is increasingly restricted to open or disturbed habitats. Workers are diurnal. The species is relatively common in canopy fogging samples at La Selva Biological Station.
Nests are in narrow-guage dead stems. Most nests I have encountered have been in stems 4-10mm outside diameter. Nests can be populous: a nest I found in a dead Cecropia petiole lodged in low vegetation contained 319 workers. Nests commonly occur in low vegetation, so the species is frequently encountered and collected.
Type Data
Notes
Literature Cited
Mayr, G. 1870. Formicidae novogranadenses. Sitzungsber. Kais. Akad. Wiss. Wien Math.-Naturwiss. Cl. Abt. I 61:370-417.
Page author:
John T. Longino, The Evergreen State College, Olympia WA 98505 USA.longinoj@evergreen.edu
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