Pheidole xyston

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

Philip Ward took the San Andrés Tuxtla series from a rotten log in cloud forest. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


From Wilson (2003): Known only from the type series and from a second series collected 11 km north of San Andrés Tuxtla, Veracruz, at 1400 m, col. P. S. Ward.

Distribution based on Regional Taxon Lists

Neotropical Region: Guatemala, 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.

  • xyston. Pheidole xyston Wilson, 2003: 535, 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 Similar to Pheidole ceibana, Pheidole lemnisca, Pheidole peltastes, Pheidole perkinsi, Pheidole renae and Pheidole tayrona, distinguished in the major by the rugoreticulate occiput, shallowly concave posterior cephalic profile, cornulate humerus, and posteriorly curving propodeal spine; and in the minor by the toothed humerus and relatively long, straight propodeal spine.

MEASUREMENTS (mm) Holotype major: HW 0.70, HL 0.78, SL 0.44, EL 0.10, PW 0.40. Paratype minor: HW 0.42, HL 0.42, SL 0.40, EL 0.06, PW 0.26.

COLOR Major: mandibles and body medium brown, rest of appendages yellowish brown.

Pheidole xyston Wilson 2003.jpg

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

Type Material

MEXICO: 7 km north of Huatusco, Veracruz, 1280 m, col. A. Newton. Museum of Comparative Zoology


Gr xyston, shaft of a spear, referring to the long propodeal spine of the minor.