Pheidole sagax

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

The type series was collected from a forested ravine. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


From Wilson (2003): Known from the type series and from Granada, Nicaragua, col. C. F. Baker.

Latitudinal Distribution Pattern

Latitudinal Range: 4.190329° to -4.1°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Colombia (type locality), Ecuador, Nicaragua, Venezuela.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.


Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.





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

  • sagax. Pheidole sagax Wilson, 2003: 227, figs. (s.w.) COLOMBIA.

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


A member of the diligens group, close to Pheidole diligens, Pheidole radoszkowskii, and allied species, distinguished as follows.

Major: yellow; in full-face view, profiles of occipital lobes form almost perfect semicircles; in dorsal-oblique view, humerus is subangulate and pronotum weakly bilobous; petiolar node broad, its apex in side view broadly rounded; all of head dorsum and mesosoma foveolate; gaster entirely smooth and shiny; profile of head in full-face view bare of pilosity, except for clypeus.

Minor: yellow; occiput slightly narrowed, with nuchal collar; most of posterior dorsal surface of head and all of gaster smooth and shiny.

MEASUREMENTS (mm) Holotype major: HW 1.14, HL 1.14, SL 0.76, EL 0.16, PW 0.54. Paratype minor: HW 0.54, HL 0.62, SL 0.70, EL 0.14, PW 0.36.

COLOR Major and minor: concolorous medium yellow.

Pheidole sagax Wilson 2003.jpg

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

Type Material

COLOMBIA: 5 km north of Villavicencio, Meta, col. William L. and Doris E. Brown. Museum of Comparative Zoology


L sagax, referring to the globose occipital lobes.


References based on Global Ant Biodiversity Informatics

  • Mertl, A.L., K.T. Ryder Wilkie and J.F.A. Traniello. 2009. Impact of Flooding on the Species Richness, Density and Composition of Amazonian Litter-Nesting Ants. Biotropica 41(5):633-641
  • Wilson, E.O. 2003. Pheidole in the New World: A Dominant, Hyperdiverse Genus. Harvard University Press