Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Identification
Minor worker: head length 0.42mm, head width 0.40mm, scape length 0.40mm, Webers length 0.52mm (n=1). Head rounded behind with impressed median area; mesonotal suture absent; promesonotum evenly arched; propodeal spines medium length; face and most of mesosoma uniformly foveolate; most of katepisternum and lower side of propodeum smooth and shiny; first gastral tergum smooth and shining; promesonotal dorsum with 16 or more medium length, moderately stiff setae; some dorsal setae with nearly microscopic branches near apex; color orange.
Major worker: head length 0.78mm, head width 0.63mm, scape length 0.32mm (n=1). Face largely foveolate; puncta overlain with faint rugulae; hypostomal margin gently concave, with stout median tooth and distinct lateral teeth about two thirds distance to recessed teeth flanking mandible bases; dorsal pilosity moderately abundant; head with short, suberect pilosity projecting from sides of head in face view.
Range
Costa Rica.
Notes
We examined a paratype series of the proposed manuscript name olsoni. The series is from Panama, Volcan Chiriqui, 18 Aug 1935. It contains workers and soldiers. These specimens match very closely a series of workers and one soldier collected at Las Cruces by L. and A. Alonso (in association with M. Kaspari). The minor workers also closely match specimens from La Selva, formerly given the morphospecies code JTL-105. The La Selva specimens were from baits on 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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