Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Identification
Minor worker: head length 0.51mm, head width 0.49mm, scape length 0.46mm, Webers length 0.63mm (n=1). Head rounded to somewhat flattened behind; promesonotum evenly arched, mesonotal suture absent; humeri projecting as tubercles, each bearing a long seta; propodeal spines moderately long, projecting obliquely; face, pronotum, and gaster largely smooth and shining; katepisternum, anepisternum, and propodeum foveolate; dorsal pilosity abundant, long, flexuous; color red brown.
Major worker: head length 0.85mm, head width 0.80mm, scape length 0.43mm (n=1). Face largely covered with longitudinal, subparallel rugae; antennal scrobes in the form of broad, shallow depressions, not sharply delimited; surface of scrobe smooth and shiny, unlike surrounding striatorugose sculpture; hypostomal margin flat, with small, rounded, inconspicuous median tooth, and pair of stout, sharp teeth about one third distance to recessed teeth flanking mandible bases; dorsal pilosity abundant; head with abundant, erect setae projecting from sides of head in face view.
Range
Costa Rica (Atlantic lowlands).
Natural History
Inhabits wet forest floor; nests in dead wood on ground.
Selected Records
La Selva: multiple Winkler and Berlese samples; at honey/shortening baits on forest floor.
La Selva: nest in dead wood on ground (C. Thompson study).
Braulio Carrillo National Park, 300m: Winkler sample.
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
Last modified: 2 September 2003.
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