Pheidole dwyeri

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Pheidole dwyeri
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. dwyeri
Binomial name
Pheidole dwyeri
Gregg, 1969

Pheidole dwyeri casent0901588 p 1 high.jpg

Pheidole dwyeri casent0901588 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of dwyeri.


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.

  • dwyeri. Pheidole dwyeri Gregg, 1969: 97, fig. 2 (s.w.) MEXICO. See also: Wilson, 2003: 541.

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


From Wilson (2003): DIAGNOSIS A very distinctive species in the small group of Pheidole that possess 4-segmented antennal clubs.

Major: very large; head disproportionately large, with Head Width more than 2.5X Pronotal Width; head tapered strongly toward occiput in side view; in full-face view, occiput deeply and subangularly concave; median ocellus present; small patch of rugoreticulum present laterad to each antennal fossa.

Minor: propodeal spine of medium length; occiput in full-face view broad and weakly concave.

MEASUREMENTS (mm) Paratype major: HW 2.56, HL 2.58, SL 1.24, EL 0.24, PW 1.00. Paratype minor: HW 0.66, HL 0.74, SL 0.76, EL 0.12, PW 0.42.

Pheidole dwyeri Wilson 2003.jpg

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

Type Material

MEXICO: Isla Maria Cleofas, Las Tres Marias, Nayarit, col. Roy R. Snelling. Los Angeles County Museum of Natural History, Museum of Comparative Zoology and American Museum of Natural History - as reported in Wilson (2003)


Named after Richard F. Dwyer, who sponsored the Snelling collecting tour of Las Tres Marias. (Wilson 2003)


  • Gregg, R. E. 1969b. New species of Pheidole from Pacific Coast islands (Hymenoptera: Formicidae). Entomol. News 80: 93-101 (page 97, fig. 2 soldier, worker described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 541, fig. major, minor described)