Pheidole petrensis

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

Collected from beneath a rock. A male was present in the nest on 26 May. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


Only known from the type locality.

Distribution based on Regional Taxon Lists

Neotropical Region: Mexico (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




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

  • petrensis. Pheidole petrensis Wilson, 2003: 337, figs. (s.w.) MEXICO.

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 fallax group similar to Pheidole haskinsorum, Pheidole hector, Pheidole lattkei and Pheidole susannae, distinguished as follows.

Major: head subrectangular in full-face view; tip of antennal scape just reaches occipital corner; almost entire head, mesosoma, and waist foveolate and opaque; entire central strip of all the gastral tergites shagreened and opaque; rugoreticulum limited to space between eye and antennal fossa; carinulae limited mostly to anterior half of head, absent from rest of body; propodeal spines moderately long and thin.

Minor: propodeal spines long, very thin, needle-like; head capsule in full-face view forms almost perfect oval; nuchal collar present; entire head and body foveolate and opaque; entire central strip of first gastral tergite shagreened and opaque to subopaque.

MEASUREMENTS (mm) Holotype major: HW 1.16, HL 1.26, SL 1.02, EL 0.22, PW 0.62. Paratype minor: HW 0.68, HL 0.84, SL 1.06, EL 0.20, PW 0.46.

COLOR Major: body and appendages medium to dark brown; a darker brown circular spot is present on vertex.

Minor: body concolorous light brown.

Pheidole petrensis Wilson 2003.jpg

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

Type Material

MEXICO: 24 km west of Cuernavaca, Morelos, 2200 m, col. William P. MacKay. Museum of Comparative Zoology


Gr L petrensis, at a stone, alluding to the microhabitat of the type colony.