Pheidole JTL-104 Longino ms.

Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker face view

worker lateral view

major face view

major lateral view


Minor worker: head length 0.38mm, head width 0.38mm, scape length 0.32mm, Webers length 0.42mm (n=1). Head rounded behind, with median impression; mesonotal suture absent; propodeal spines medium length; face and mesosoma uniformly foveolate; first gastral tergum smooth and shining; about 14 setae on promesonotal dorsum, medium length, curved, with nearly microscopic branches at apex; setae on gastral dorsum medium length, somewhat stiff; tibiae with short decumbent pilosity, no long erect hairs; color orange.

Major worker: head length 0.78mm, head width 0.75mm, scape length 0.39mm (n=1). Face rugose foveolate throughout; rugae reticulate on posterior half, increasingly longitudinal and subparallel on anterior half; hypostomal margin gently curved; median tooth small; lateral teeth pointed, stout, about one half distance from midline to recessed teeth flanking mandible bases (Figure); dorsal pilosity abundant; head with abundant suberect setae projecting from sides of head in face view.


Costa Rica (Atlantic and southern Pacific lowlands).

Natural History

Inhabits wet forest leaf litter.

Selected Records

La Selva: multiple Winkler and Berlese samples.

Braulio Carrillo National Park: Winkler sample from 300m and 800m.

Rio Penas Blancas, 800m: multiple Winkler samples.

Carara Biological Reserve, 500m: Winkler sample.

Osa Peninsula: Winkler sample.

Page authors:

John T. Longino, The Evergreen State College, Olympia WA 98505 USA.

Stefan Cover, Museum of Comparative Zoology, Harvard University, Cambridge MA 02138 USA.

Date of this version: 8 December 1997
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