Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Identification
Minor worker: head length 0.51mm, head width 0.49mm, scape length 0.43mm, Webers length 0.58mm (n=1). Head flat behind; mesonotal suture absent; propodeal spines medium length, erect; face and mesosoma coarsely rugose foveolate, rugae reduced on side of mesosoma; first gastral tergum smooth and shining; dorsal pilosity abundant, of moderate length, flexuous; tibial pilosity of variable length, with dense subdecumbent pilosity that is shorter than maximum width of tibia and longer erect setae that are longer than width of tibia; color red brown.
Major worker: head length 1.06mm, head width 0.96mm, scape length 0.47mm (n=1). Face generally shining; medial area between frontal carinae with subparallel longitudinal rugae; area beneath sweep of scapes reticulate rugose foveolate; posterior third of face and vertex lobes smooth and shining; hypostomal margin flat, somewhat shelf-like in form; median tooth absent; stout lateral teeth about one third distance from midline to recessed teeth flanking mandible bases; dorsal pilosity abundant; head with abundant erect setae projecting from sides of head in face view.
Similar species: prolixa, beloceps, JTL-139, JTL-140.
Range
Costa Rica: La Selva Biological Station, Penas Blancas Valley.
Natural History
The species has been observed: (1) in Project ALAS Berlese samples, from 4 of 16 sampled sites; (2) a nest in a dead stick in primary forest leaf litter (Chris Thompson study); (3) specimens collected by Stefan Cover, in soil under log; and (4) a Winkler sample from Penas Blancas Valley.
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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