Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Identification
Minor worker: head length 0.53mm, head width 0.53mm, scape length 0.44mm, Webers length 0.61mm (n=1). Head flattened behind, slightly excavate; promesonotum evenly and strongly arched, mesonotal suture absent; propodeal spines short, sharp, upturned; face smooth and shining; katepisternum and propodeal dorsum foveolate, rest of mesosoma smooth and shining; pronotum with a transverse anterior carina (like P. laselva); gastral dorsum smooth and shining; dorsal pilosity moderately abundant, medium length, flexuous; color dark red brown.
Major worker: head length 1.15mm, head width 0.92mm, scape length 0.45mm (n=1). Clypeus smooth and shiny, with small median tubercle between frontal carinae; frontal carinae elevated and projecting anteriorly (the above characters like P. rhinoceros); anterior half of face with longitudinal rugae, interspaces and posterior half of face smooth and shiny; antennal scrobes present in the form of broad, shallow depressions; hypostomal margin flat, with no medial tooth, pair of stout triangular teeth located less than one third distance to recessed teeth flanking mandibles; dorsal pilosity abundant; head with abundant suberect setae projecting from sides of head in face view.
Range
Costa Rica: Atlantic lowlands (La Selva Biological Station).
Natural History
This species is known from one collection from La Selva Biological Station. Specimens were collected in a Winkler sample of sifted leaf litter from the forest floor.
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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