Pheidole alpestris

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

Pheidole alpestris jtlc000016318 p 1 high.jpg

Pheidole alpestris jtlc000016318 d 1 high.jpg

Specimen Labels

Two colonies of the types were taken by Ward under a stone in Baccharis scrub, at roadside. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


Only known from the type locality.

Latitudinal Distribution Pattern

Latitudinal Range: -0.25° to -0.25°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Ecuador (type locality).

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.

  • alpestris. Pheidole alpestris Wilson, 2003: 166, figs. (s.w.) ECUADOR.

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


A small, brown member of the diligens group distinguished in both major and minor by the low mesonotal convexity, shallow metanotal depression in side view, and hence a more cylindrical form of the mesosoma overall in side view than is usual for Pheidole; a small convexity atop the metanotal depression in side view; large, robust propodeal spines; and dense erect to suberect pilosity over the entire body; pubescence absent.

Major: a secondary convexity on the pronotum and a small, angular subpostpetiolar process evident in side view.

Minor: ventral profile of head capsule flat in side view. Very close to, and possibly synonymous with, Pheidole cameroni, but distinguished by, among other traits, much denser pilosity and the absence of carinulae mesad to the eye in the major.

MEASUREMENTS (mm) Holotype major: HW 1.02, HL 1.02, SL 0.78, EL 0.20, PW 0.54. Paratype minor: HW 0.54, HL 0.62, SL 0.44, EL 0.12, PW 0.34.

COLOR Major: concolorous medium brown.

Minor: concolorous light brown.

Pheidole alpestris Wilson 2003.jpg

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

Type Material

ECUADOR: 6 km southeast of Pifo, Pichincha, 0°15'S 78°18'W, 2900 m, col. Philip S. Ward. Museum of Comparative Zoology


L alpestris, of high mountains.


References based on Global Ant Biodiversity Informatics

  • Donoso D. A., F. Salazar, F. Maza, R. E. Cárdenas, and O. Dangles. 2009. Diversity and distribution of type specimens deposited in the Invertebrate section of the Museum of Zoology QCAZ, Quito, Ecuador. Annales de la Société Entomologique de France 45(4): 437-454.
  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.