Pheidole gaigei

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Pheidole gaigei
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. gaigei
Binomial name
Pheidole gaigei
Forel, 1914

MCZ-ENT00022811 Pheidole gaigei hal.jpg

MCZ-ENT00022811 Pheidole gaigei had.jpg

Type Label

Nothing is known about the biology of gaigei.


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: Colombia (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.

  • gaigei. Pheidole gaigei Forel, 1914c: 616 (s.w.) COLOMBIA. See also: Wilson, 2003: 692.

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 member of the tristis group, similar to Pheidole balzani, Pheidole godmani, Pheidole grandinodus, Pheidole huilana, Pheidole obrima, and, less so, to species listed with them, distinguished as follows.

Major: postpetiole from above bell-shaped, 2X broader than petiole; postpetiole with prominent ventral, forward-projecting subangular process; anterior third of pronotal dorsum and all of mesopleuron carinulate; carinulae on dorsal surface of head reach midway between eye and occipital border.

Minor: occiput very broad, lacking nuchal collar; propodeal spines reduced to denticles; margins all around of pronotal dorsum, as well as lower half of mesopleuron, carinulate.

MEASUREMENTS (mm) Syntype major: HW 1.28, HL 1.38, SL 0.72, EL 0.08, PW 0.62. Syntype minor: HW 0.64, HL 0.72, SL 0.66, EL 0.12, PW 0.44.

COLOR Major: concolorous light reddish yellow.

Minor: concolorous brownish yellow.

Pheidole gaigei Wilson 2003.jpg

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

Paratype Specimen Labels

Type Material

COLOMBIA: Mt. San Lorenzo, Sierra Nevada de Santa Marta, 1700 m. Musee d'Histoire Naturelle Genève and Museum of Comparative Zoology - as reported in Wilson (2003)


Eponymous. (Wilson 2003)