Pheidole tachigaliae

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Pheidole tachigaliae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. tachigaliae
Binomial name
Pheidole tachigaliae
Wheeler, W.M., 1921

MCZ-ENT00020778 Pheidole tachigaliae hal.jpg

MCZ-ENT00020778 Pheidole tachigaliae had.jpg

Type Specimen Label

Found on the ant-plant Tachigalia. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


From Wilson (2003): Known from the type locality and from Kaw, French Guiana, col. Mark W. Moffett.

Distribution based on Regional Taxon Lists

Neotropical Region: French Guiana, Guyana (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.

  • tachigaliae. Pheidole tachigaliae Wheeler, W.M. 1921f: 148 (s.w.q.) GUYANA. Combination in P. (Hendecapheidole): Wheeler, W.M. 1922d: 3. See also: Smith, M.R. 1955c: 304; Wilson, 2003: 639.

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 tachigaliae group, characterized by very small size and 11-segmented antennae, this species is easily recognized by the following traits.

Major: dorsal surface of head longitudinally carinulate (not transversely carinulate as in other tachigaliae-group species); pronotal dorsum lightly sprinkled with foveolae, feebly shiny; propodeal spines short, stout and directed strongly backward.

Minor: all of head and mesosoma foveolate and opaque.

MEASUREMENTS (mm) Lectotype major: HW 0.64, HL 0.74, SL 0.32, EL 0.08, PW 0.40. Paralectotype minor: HW 0.34, HL 0.38, SL 0.28, EL 0.08, PW 0.22.

COLOR Major: concolorous medium yellow; vertex with a fuzzy, circular brown spot as illustrated.

Minor: concolorous pale yellow.

Pheidole tachigaliae Wilson 2003.jpg

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

Lectotype Specimen Labels

Type Material

GUYANA: Kartabo, col. William M. Wheeler. Museum of Comparative Zoology - as reported in Wilson (2003)


L tachigaliae, referring to the plant on which the type colony was found. (Wilson 2003)


  • Smith, M. R. 1955d. Ants of the genus Pheidole, subgenus Hendecapheidole (Hymenoptera, Formicidae). Proc. Entomol. Soc. Wash. 57: 301-305 (page 304, see also)
  • Wheeler, W. M. 1921f. The Tachigalia ants. Zoologica (N. Y.) 3: 137-168 (page 148, soldier, worker, queen described)
  • Wheeler, W. M. 1922f. A new genus and subgenus of Myrmicinae from tropical America. Am. Mus. Novit. 46: 1-6 (page 3, Combination in P. (Hendecapheidole))
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 639, fig. major, minor described)