Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Identification
Minor worker:
Corcovado: head length 0.48mm, head width 0.46mm, scape length 0.41mm, Webers length 0.58mm (n=1).
Guanacaste Conservation Area (Pitilla): head length 0.54mm, head width 0.52mm, scape length 0.41mm, Webers length 0.65mm (n=1).
Head flattened to slightly excavate behind; mesonotal suture absent; humeri slightly produced as small tubercles; propodeal spines of moderate length; face irregularly foveolate to punctatorugose, with median patch smooth and shining; mesosoma foveolate throughout; gaster smooth and shining; dorsal pilosity abundant, flexuous; color red brown.
Major worker:
Corcovado: head length 0.90mm, head width 0.84mm, scape length 0.42mm (n=1).
Guanacaste Conservation Area (Pitilla): head length 0.97mm, head width 0.94mm, scape length 0.43mm (n=1).
Anterior half of face with longitudinal, subparallel rugae, posterior half smooth and shining; clypeus with longitudinal median keel; hypostomal margin straight, with small, rounded median tooth, and pair of stout, sharp teeth about one third to half distance to recessed teeth flanking mandible bases; dorsal pilosity abundant; head with abundant, suberect setae projecting from sides of head in face view.
Range
Bolivia, Colombia, Costa Rica. Costa Rica: Pacific lowlands.
Natural History
Inhabits lowland wet forest.
Selected Records
Corcovado National Park (Llorona): mature wet forest. Nesting under loose bark of a still solid log fallen across trail.
Corcovado National Park (Sirena): on extrafloral nectaries of Passiflora.
Manuel Antonio: second growth vegetation with isolated tall trees. Nest in 3cm dead section of woody shrub. Camponotus nest in same dead section.
Guanacaste Conservation Area (Pitilla): roadside in second growth veg. Under loose bark.
Page authors:
John T. Longino, The Evergreen State College, Olympia WA 98505 USA. longinoj@evergreen.edu
Stefan Cover, Museum of Comparative Zoology, Harvard University, Cambridge MA 02138 USA. scover@oeb.harvard.edu
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