Pheidole gauthieri Forel 1901

Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker face view

worker lateral view

major face view

major lateral view


Colombia (type locality), Panama (type locality of subspecies oxymora), Costa Rica, Guatemala. Costa Rica: southern Atlantic and southern Pacific lowlands.


Minor worker: head length 0.79mm, head width 0.80mm, scape length 0.85mm, Webers length 1.15mm (n=1). Head evenly rounded behind, with narrow vertex collar; clypeus anteriorly dentate; mesonotal suture moderately impressed, metanotal groove deeply impressed, juncture of posterior wall of suture and propodeal dorsum forming a conspicuous step; propodeal spines long; face densely punctatorugose; mesosoma entirely reticulate rugose, shiny; gastral dorsum smooth and shiny; dorsal pilosity abundant, long, flexuous; color red.

Major worker: head length 2.08mm, head width 2.05mm, scape length 0.84mm (n=1). Face shiny, reticulate rugose over most of medial area, with somewhat abrupt transition to smooth and shiny on vertex lobes; hypostomal margin with rounded median tooth, and two blunt, subtriangular teeth located about half distance from midline to teeth flanking inner mandible bases; dorsal pilosity abundant; head with abundant erect setae projecting from sides in face view.

Natural History

This species occurs in mature wet forest; nests in dead wood in the low arboreal zone; forages in the leaf litter and at extrafloral nectaries.

Selected Records

Hitoy Cerere: nocturnal forager.

Hitoy Cerere: mature wet forest; night collecting. Nest in 4cm dia vertical dead branch, 2m high, a few workers out foraging.

Corcovado National Park (Sirena): Winkler sample; at extrafloral nectaries of Passiflora.

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: 4 December 1997
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