= angusticeps Wilson 2003
Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Range
Costa Rica: Guanacaste lowlands.
Identification
Minor worker: head length 0.62mm, head width 0.50mm, scape length 0.66mm, Webers length 0.75mm (n=1). Head flattened behind, with median excavation; promesonotal suture weakly impressed; metanotal groove well impressed; propodeal spines short, upturned; face and mesosoma uniformly foveolate; gaster mat; 6 stiff setae on mesosoma, 2 on dorsal face of propodeum; color yellow.
Major worker: head length 1.05mm, head width 0.95mm, scape length 0.62mm (n=1). Most of face foveolate, fading to smooth and shiny vertex lobes; hypostomal margin broadly concave, with pair of minute tubercles 4/5 distance from midline to recessed teeth flanking mandibles, no median tooth; face with sparse stiff setae; mesosoma with one pair stiff setae on pronotum, otherwise naked; gaster mat, with sparse stiff suberect setae; no setae projecting from sides of head in face view.
Natural History
This species is known from a few dry forest sites in northwestern Costa Rica. The types were from tuna bait, Santa Rosa National Park.
Comments
Label data on holotype: Costa Rica: Guanacaste Prov., 1km E Station, Santa Rosa N. P., Trop. dry forest, 280m, tuna bait, 19 October 1992, D. Olson.
A synonym may be P. angusticeps Wilson, with type locality Islas Murcielagas. These are small islands just off the coast in Guanacaste province, and they have a mainland fauna much like dry portions of nearby Santa Rosa National Park.
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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