Pheidole heyeri

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Pheidole heyeri
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. heyeri
Binomial name
Pheidole heyeri
Forel, 1899

Pheidole heyeri casent0908169 p 1 high.jpg

Pheidole heyeri casent0908169 d 1 high.jpg

Specimen Labels


Nothing is known about the biology of heyeri.


See the description in the nomenclature section.

Keys including this Species


São Paulo and Rio Grande do Sul states, Brazil. (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (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.

  • heyeri. Pheidole guilelmimuelleri var. heyeri Forel, 1899c: 71 (footnote) (s.w.) BRAZIL. Raised to species and senior synonym of ultrix: Wilson, 2003: 706. See also: Forel, 1911c: 302; Forel, 1912f: 321.
  • ultrix. Pheidole guilelmimuelleri var. ultrix Forel, 1912f: 221 (s.) BRAZIL. Junior synonym of heyeri: Wilson, 2003: 706.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.


DIAGNOSIS From Wilson (2003): Similar especially to Pheidole antillana of the Lesser Antilles, but differing in the following combination of traits.

Major: shallow scrobes, whose surfaces lack sculpturing; small rugoreticula present mesad to the eyes and on the dorsal pronotal margins; dorsal surface of occiput mostly smooth but with scattered foveae; mesonotal convexity subangulate; postpetiole strongly cornulate.

Minor: occiput and lateral posterior quarters of cephalic dorsum transversely carinulate; humerus subangulate in dorsal-oblique view; most of promesonotum rugulose, with margins loosely rugoreticulate. Color of major and minor: reddish yellow.

MEASUREMENTS (mm) Lectotype major: HW 2.02, HL 2.16, SL 0.90, EL 0.22, PW 0.82. Paralectotype minor: HW 0.82, HL 0.86, SL 0.92, EL 0.14, PW 0.54.

COLOR Major: body medium reddish yellow, appendages light reddish yellow.

Minor: body dark reddish yellow, appendages light reddish yellow.

Pheidole heyeri Wilson 2003.jpg

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

Lectotype Specimen Labels

Type Material

BRAZIL: São Leopoldo, Rio Grande do Sul. Musee d'Histoire Naturelle Genève - as reported in Wilson (2003)


Eponymous. (Wilson 2003)


  • Forel, A. 1899e. Formicidae. [part]. Biol. Cent.-Am. Hym. 3: 57-80 (page 71, soldier, worker described)
  • Forel, A. 1911e. Ameisen des Herrn Prof. v. Ihering aus Brasilien (Sao Paulo usw.) nebst einigen anderen aus Südamerika und Afrika (Hym.). Dtsch. Entomol. Z. 1911: 285-312 (page 302, see also)
  • Forel, A. 1912g. Formicides néotropiques. Part III. 3me sous-famille Myrmicinae (suite). Genres Cremastogaster et Pheidole. Mém. Soc. Entomol. Belg. 19: 211-237 (page 321, see also)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 706, Raised to species: new status, fig. major, minor described, Senior synonym of ultrix)