Formicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
Additional images: minor worker scape (original, reduced).
Costa Rica: Atlantic slope at 500m, Corcovado National Park, Wilson Botanical Garden.
Minor worker: propodeum very narrow and elongate, in cross section tectiform (tent-like, like an inverted "V"), without a distinct angle separating lateral and dorsal faces; clypeus with median longitudinal keel; mesosoma very elongate and narrow in lateral view; abundant erect setae on sides of head, mesosomal dorsum, and gaster; scapes with subdecumbent short pubescence and no erect setae; in face view head widest at mandibular insertions, tapering posteriorly; head behind eyes subtrapezoidal, long and tapering; size large (WL 4.3mm, n=1).
Similar species: ager.
This species is like a smaller version of C. ager, and seems to have similar habits. I know it only from occasional nocturnal foragers in mature forest areas.
John T. Longino, The Evergreen State College, Olympia WA 98505 USA.email@example.com
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