Pheidole caulicola Wilson 2003

= Pheidole JTL-054

Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker face view

worker lateral view

major face view

major lateral view


Minor worker: head length 0.50mm, head width 0.45mm, scape length 0.40mm, Webers length 0.56mm (n=1). Head somewhat flattened behind; mesonotal suture absent; humeri produced as triangular tubercles; propodeal spines long, spiniform; face foveolate, with faint longitudinal rugae medially; mesosoma punctatorugose; first gastral tergum smooth and shining; dorsal pilosity abundant, short, flexuous; color orange.

Major worker: head length 0.81mm, head width 0.75mm, scape length 0.39mm (n=1). Clypeus with median keel; face punctatorugose anteriorly, smooth and shining posteriorly, rugae longitudinal and subparallel; hypostomal margin straight, with very small, nubbin-like median tooth and stout, pointed lateral teeth about one half distance from midline to recessed teeth flanking mandible bases; dorsal pilosity abundant; head with abundant setae projecting from sides of head in face view.


Costa Rica.

Natural History

Arboreal in mid-elevation rainforest; nests in dead stems.

Selected Records

Braulio Carrillo National Park (500m): mature wet forest. Canopy of Licania sp. Colony in dead stick.

Rara Avis: fresh treefall in primary forest. In 4mm dia dead stick.

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: 2 September 2003.
Previous versions of this page: 8 December 1997
Go back to top

Go to Ants of Costa Rica Homepage