Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
Minor worker: head length 0.38mm, head width 0.38mm, scape length 0.32mm, Webers length 0.42mm (n=1). Head rounded behind, with median impression; mesonotal suture absent; propodeal spines medium length; face and mesosoma uniformly foveolate; first gastral tergum smooth and shining; about 14 setae on promesonotal dorsum, medium length, curved, with nearly microscopic branches at apex; setae on gastral dorsum medium length, somewhat stiff; tibiae with short decumbent pilosity, no long erect hairs; color orange.
Major worker: head length 0.78mm, head width 0.75mm, scape length 0.39mm (n=1). Face rugose foveolate throughout; rugae reticulate on posterior half, increasingly longitudinal and subparallel on anterior half; hypostomal margin gently curved; median tooth small; lateral teeth pointed, stout, about one half distance from midline to recessed teeth flanking mandible bases (Figure); dorsal pilosity abundant; head with abundant suberect setae projecting from sides of head in face view.
Costa Rica (Atlantic and southern Pacific lowlands).
Inhabits wet forest leaf litter.
La Selva: multiple Winkler and Berlese samples.
Braulio Carrillo National Park: Winkler sample from 300m and 800m.
Rio Penas Blancas, 800m: multiple Winkler samples.
Carara Biological Reserve, 500m: Winkler sample.
Osa Peninsula: Winkler sample.
John T. Longino, The Evergreen State College, Olympia WA 98505 USA. firstname.lastname@example.org
Stefan Cover, Museum of Comparative Zoology, Harvard University, Cambridge MA 02138 USA. email@example.com
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