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 group: tristis
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 Online Catalogue of the Ants of the World.

  • 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)


References based on Global Ant Biodiversity Informatics

  • Fleck M. D., E. Bisognin Cantarelli, and F. Granzotto. 2015. Register of new species of ants (Hymenoptera: Formicidae) in Rio Grande do Sul state. Ciencia Florestal, Santa Maria 25(2): 491-499.
  • Forel A. 1912. Formicides néotropiques. Part III. 3me sous-famille Myrmicinae (suite). Genres Cremastogaster et Pheidole. Mémoires de la Société Entomologique de Belgique. 19: 211-237.
  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
  • Luederwaldt H. 1918. Notas myrmecologicas. Rev. Mus. Paul. 10: 29-64.
  • Rosa da Silva R. 1999. Formigas (Hymenoptera: Formicidae) do oeste de Santa Catarina: historico das coletas e lista atualizada das especies do Estado de Santa Catarina. Biotemas 12(2): 75-100.