Pheidole olsoni

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

Pheidole olsoni inb0003211782 p 1 high.jpg

The holotype was collected in rainforest at a tuna bait; the Chiriquí, Panama, specimens were found in a log. Males were present in the latter colony on 18 August. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


From Wilson (2003): Known from the type locality and from El Volcan, Chiriquí, Panama, 1280 m, col. L. Hare. (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica (type locality), Guatemala, Honduras, Panama.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb



This species is known from majors and males.


The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • olsoni. Pheidole olsoni Wilson, 2003: 478, figs. (s.) COSTA RICA.

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


DIAGNOSIS Known only from the major, easily distinguished by its very small size, elongated head, bicolorous body, protuberant frontal lobe in side view, small propodeal spine, cornulate postpetiole, and unusual pattern of the rugulae mesad to the eye, which travel downward (anteriorly) from the eye obliquely mesad to meet the circular carinulae of the antennal fossae.

Similar to Pheidole browni, Pheidole casta, Pheidole mera, Pheidole prolixa and Pheidole protensa, but easily separated by the above listed traits.

MEASUREMENTS (mm) Holotype major: HW 0.54, HL 0.74, SL 0.30, EL 0.08, PW 0.30.

COLOR Major: head, dorsum of alitrunk, petiolar node, and all of postpetiole medium brown; rest of body and all of appendages medium yellow.

Pheidole olsoni Wilson 2003.jpg

Figure. Holotype, major. Scale bars = 1 mm.

Type Material

COSTA RICA: Refugio de Eladio, Peñas Blancas Valley, Alajuela, 780 m, col. David Olson. Museum of Comparative Zoology


Named after the collector David Olson.