Pheidole skwarrae

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Pheidole skwarrae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. skwarrae
Binomial name
Pheidole skwarrae
Wheeler, W.M., 1934

MCZ-ENT00020768 Pheidole schwarrae hal.jpg

MCZ-ENT00020768 Pheidole schwarrae had.jpg

Type Specimen Label

The type colony was nesting beneath a stone.


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 Online Catalogue of the Ants of the World.

  • skwarrae. Pheidole skwarrae Wheeler, W.M. 1934g: 163 (s.w.q.) MEXICO. See also: Wilson, 2003: 349.

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


From Wilson (2003): A member of the fallax group, closet to Pheidole vistana and distinguished from it and other fallax group species by the following combination of traits.

Major: head elongate, with deep occipital cleft and subangulate occipital lobes in full-face view; antennal scape exceeding the occipital lobe by 2x its own maximum width; entire body, including all of the tergites and sternites of the gaster, foveolate and opaque; space between eye, frontal lobes, and frontal carinae rugoreticulate.

Minor: entire body, including at least the anterior two segments of the gaster, foveolate and opaque; nuchal collar well developed; antennal scape very long, extending 2X the distance between its insertion and nuchal collar.

MEASUREMENTS (mm) Lectotype major: HW 1.32, HL 1.60, SL 1.42, EL 0.24, PW 0.64. Paralectotype minor: HW 0.54, HL 0.84, SL 1.20, EL 0.16, PW 0.42.

COLOR Major and minor: body concolorous medium brown, appendages yellowish brown.

Pheidole skwarrae Wilson 2003.jpg

Figure. Upper: lectotype, major. Lower: paralectotype, minor. Scale bars = 1 mm.

Lectotype Specimen Labels

Type Material

Described from one soldier, one female and two workers taken from a single colony (No. 803) nesting under a stone at Cuernavaca, Morelos. Museum of Comparative Zoology

MEXICO: Cuernavaca, Morelos, col. Elisabeth Skwarra.


Named after the collector, Elisabeth Skwarra.


  • Wheeler, W. M. 1934g. Neotropical ants collected by Dr. Elisabeth Skwarra and others. Bull. Mus. Comp. Zool. 77: 157-240 (page 163, soldier, worker, queen described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 349, fig. major, minor described)

References based on Global Ant Biodiversity Informatics

  • Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology
  • Fernandes, P.R. XXXX. Los hormigas del suelo en Mexico: Diversidad, distribucion e importancia (Hymenoptera: Formicidae).
  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
  • Rivas-Arancibia, S. P., H. Carrillo-Ruiz, A. Bonilla-Arce, D. M. Figueroa-Castro, and A. R. Andres-Hernandez. 2014. Effect of disturbance on the ant community in a semiarid region of central Mexico. Applied Ecology and Environmental Research 12: 703-716.
  • Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133
  • Wilson, E.O. 2003. Pheidole in the New World: A Dominant, Hyperdiverse Genus. Harvard University Press