Pheidole ectatommoides

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Pheidole ectatommoides
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. ectatommoides
Binomial name
Pheidole ectatommoides
Wilson, 2003

Pheidole ectatommoides inbiocri001282134 p 1 high.jpg

Specimen Labels

Longino (1997) discovered workers foraging at night on the ground and on a fallen branch in a forest. At several localities across the range, caches of seeds have been found in the nests. (Wilson 2003)

Photo Gallery

  • A frehsly hatched worker of Pheidole ectatommoides. This species nests in rotten wood and is a seed collector. Photo by Philipp Hönle.


See the description in the nomenclature section.

Keys including this Species


Recorded from Costa Rica, Panama, Colombia, and Ecuador. J. T. Longino (1997) found the species in Costa Rica on the Atlantic slope. (Wilson 2003)

Latitudinal Distribution Pattern

Latitudinal Range: 10.35° to -2.702505°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Colombia, Costa Rica (type locality), Ecuador, Panama.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb






The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • ectatommoides. Pheidole ectatommoides Wilson, 2003: 683, figs. (s.w.) COSTA RICA.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.


DIAGNOSIS A highly distinctive species with some resemblance to Pheidole arietans, Pheidole glyphoderma and Pheidole triumbonata, but instantly recognizable by the unique pattern of sculpturing, especially on the minor worker, as illustrated.

MEASUREMENTS (mm) Holotype major: HW 1.98, HL 2.12, SL 0.90, EL 0.24, PW 0.86. Paratype minor: HW 0.74, HL 0.80, SL 0.84, EL 0.20, PW 0.50. ectatommoides COLOR Major: head, meso soma, and waist light reddish brown; appendages and gaster reddish yellow.

Minor: head and meso soma reddish yellow; waist, gaster, and appendages plain medium yellow.

Pheidole ectatommoides Wilson 2003.jpg

Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.

Type Material

COSTA RICA: Rio Toro Amarillo, near Guapiles, col. William L. Brown. Museum of Comparative Zoology


L ectatommoides, referring to the distinctive sculpturing of the minor especially, reminiscent of ectatommoid ponerine ants.


References based on Global Ant Biodiversity Informatics

  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Longino J. T. L., and M. G. Branstetter. 2018. The truncated bell: an enigmatic but pervasive elevational diversity pattern in Middle American ants. Ecography 41: 1-12.