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 Online Catalogue of the Ants of the World.

  • 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)

References based on Global Ant Biodiversity Informatics

  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
  • Lapolla, J. S., and S. P. Cover. "New species of Pheidole (Hymenoptera : Formicidae) from Guyana, with a list of species known from the country." Transactions of the American Entomological Society 131, no. 3-4 (2005): 365-374.
  • Smith M. R. 1955. Ants of the genus Pheidole, subgenus Hendecapheidole (Hymenoptera, Formicidae). Proceedings of the Entomological Society of Washington 57: 301-305.
  • Wheeler W. M. 1921. The Tachigalia ants. Zoologica (New York) 3: 137-168.
  • Wheeler W. M. 1942. Studies of Neotropical ant-plants and their ants. Bulletin of the Museum of Comparative Zoology 90: 1-262.