Pheidole tragica

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

MCZ-ENT00022885 Pheidole tragica hal.jpg

MCZ-ENT00022885 Pheidole tragica had.jpg

Type Specimen Label

This species is only known from type specimens. Nothing is known about its biology.


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.

  • tragica. Pheidole tragica Wheeler, W.M. 1934g: 167 (s.w.) MEXICO. See also: Wilson, 2003: 526.

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 somewhat larger brown species, whose major has a bicolorous head, rugoreticulum mesad to the eye, conspicuous foveae scattered over the otherwise smooth posterior half of the dorsal head capsule, and cornulate postpetiole. The mesonotum of the major and minor has no dorsal convexity, and its posterior face descends abruptly to the metanotum.

Somewhat similar to Pheidole arhuaca, Pheidole caulicola, Pheidole chalca, Pheidole nitidicollis, Pheidole mixteca and Pheidole scabriventris, but easily distinguished by combinations of many or all of the above traits.

MEASUREMENTS (mm) Lectotype major: HW 1.04, HL 1.20, SL 0.60, EL 0.18, PW 0.56. Paralectotype minor: HW 0.54, HL 0.58, SL 0.50, EL 0.12, PW 0.34.

COLOR Major: head bicolorous, with anterior third brownish yellow and posterior two-thirds medium brown; rest of body concolorous medium brown.

Minor: body concolorous medium brown.

Pheidole tragica Wilson 2003.jpg

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

Lectotype Specimen Labels

Type Material

A single soldier and three workers (No. A39) taken by Dr. Skwarra at Pedregal, near Mexico City. Museum of Comparative Zoology MEXICO: Pedregal, near Mexico City, col. Elisabeth Skwarra.


Gr tragicus, pertaining to tragedy, significance unknown. (Wilson 2003)


  • Wheeler, W. M. 1934g. Neotropical ants collected by Dr. Elisabeth Skwarra and others. Bull. Mus. Comp. Zool. 77: 157-240 (page 167, soldier, worker described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 526, fig. major, minor described)