Pheidole hetschkoi

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Pheidole hetschkoi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. hetschkoi
Binomial name
Pheidole hetschkoi
Emery, 1896

Pheidole hetschkoi casent0904372 p 1 high.jpg

Pheidole hetschkoi casent0904372 d 1 high.jpg

Specimen Labels


From Wilson (2003): Occurs in montane rainforest. A seed cache was found in a nest in the Boraceia Biological Station, Salesópolis, São Paulo, col. W. L. Brown.


See the description in the nomenclature section.

Keys including this Species


In addition to the types, from the state of Santa Catarina, I have examined series from Espirito Santo and São Paulo, variously at 750–800 m. (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.

  • hetschkoi. Pheidole hetschkoi Emery, 1896g: 66 (s.w.) BRAZIL. Senior synonym of frivola: Wilson, 2003: 705.
  • frivola. Pheidole hetschkoi var. frivola Santschi, 1923d: 57 (s.w.) BRAZIL. Junior synonym of hetschkoi: Wilson, 2003: 705.

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 Similar to Pheidole antillana, Pheidole coveri and Pheidole gauthieri, differing in the following combination of traits.

Major: shallow antennal scrobes with surfaces weakly sculptured and shiny; patches of rugoreticulum mesad to the eyes and others posterior to the antennal scrobes; middle third of the dorsal head surface covered by longitudinal carinulae that reach the occipital border; anterior margin of the pronotal dorsum rugoreticulate, and lateral borders irregularly carinulate; postpetiolar cornicles strongly developed.

Minor: transverse carinulae cover the occiput; carinulae arising on the frontal lobes curve to the outside (laterad) to approach the eyes transversely; pronotal dorsum entirely carinulate; mesonotal dorsum rugoreticulate; mesonotum rugoreticulate; occiput narrow, with nuchal collar.

MEASUREMENTS (mm) Lectotype major: HW 2.00, HL 2.14, SL 0.90, EL 0.24, PW 0.84. Paralectotype minor: HW 0.76, HL 0.86, SL 0.90, EL 0.16, PW 0.54.

COLOR Major: head, mesothorax, and appendages medium reddish brown, waist and gaster medium plain or reddish brown.

Minor: head and mesosoma medium brown; waist, gaster, and appendages brownish yellow.

Pheidole hetschkoi Wilson 2003.jpg

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

Lectotype Specimen Labels

Type Material

BRAZIL: Santa Catarina. Museo Civico di Storia Naturale, Genoa - as reported in Wilson (2003)


Eponymous. (Wilson 2003)


  • Emery, C. 1896g. Studi sulle formiche della fauna neotropica. XVII-XXV. Bull. Soc. Entomol. Ital. 28: 33-107 (page 66, soldier, worker described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Cambridge, Mass.: Harvard University Press, [ix] + 794 pp.: 794pp (page 705, fig. major, minor described, Senior synonym of frivola)