Pheidole tetroides

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

The types were attracted to a bait at night. (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.

  • tetroides. Pheidole tetroides Wilson, 2003: 352, 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.


DIAGNOSIS A member of the fallax group resembling Pheidole chiapasana, Pheidole dentata, Pheidole humeridens, Pheidole industa, Pheidole laeviventris, Pheidole madrensis and Pheidole maja in various characters, distinguished as follows.

Major: in full-face view the occipital margin is deep, with a subangular nadir; rugoreticulum of head extends in a swath from eye to antennal fossa; carinulae of dorsal surface of head extend almost to midpoint between level of eyes and level of occiput, and foveolation extends well beyond the midpoint; humerus in dorsal-oblique view angulate, and pronotal profile bilobose; propodeal spines strongly developed; postpetiole from above elliptical, with angulate lateral margins; anterior and posterior margins of pronotal dorsum carinulate.

Minor: closely resembles that of tetra in the crassicornis group (q.v.).

MEASUREMENTS (mm) Holotype major: HW 1.16, HL 1.24, SL 0.76, EL 0.18, PW 0.64. Paratype minor: HW 0.56, HL 0.66, SL 0.76, EL 0.14, PW 0.40.

COLOR Major: light reddish brown except for gaster, which is medium reddish brown.

Minor: concolorous plain medium brown; appendages light brown, changing to yellow on the tarsi.

Pheidole tetroides Wilson 2003.jpg

Figure. Holotype, major. [Paratype minors closely resemble minors of Pheidole tetra (q.v.).] Scale bars = 1 mm.

Type Material

MEXICO: 38 km southeast of Tepic, Nayarit, 1220 m, col. R. J. Hamton. Museum of Comparative Zoology


Gr tetroides, similar to Pheidole tetra.