Pheidole weiseri

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Pheidole weiseri
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. weiseri
Binomial name
Pheidole weiseri
Santschi, 1923

Pheidole weiseri casent0922372 p 1 high.jpg

Pheidole weiseri casent0922372 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of weiseri.


See the description in the nomenclature section.

Keys including this Species


Only known from the type locality.

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (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.

  • weiseri. Pheidole (Elasmopheidole) aberrans st. weiseri Santschi, 1923d: 64 (s.w.q.) ARGENTINA. Raised to species: Wilson, 2003: 142.

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


From Wilson (2003): A member of the aberrans group, closest to Pheidole minensis and Pheidole obscurifrons.

Major: light yellow; frontal lobes seen from the side form prominent lobes that only partly overhang the clypeus; seen from above, the lobes are broad, and subangular at their anterior tips, which extend to within an Eye Length of the anterior clypeal border; tips of frontal lobes smooth, which surfaces are succeeded posteriorly by a broad band of carinulae, and this gives way at eye level to a smooth area that extends all the way to the occiput; pronotal profile semicircular; faint carinulae line the lower pronotal margin.

Minor: pronotum covered by semicircular carinulae, and mesopleuron by foveolae and longitudinal carinulae.

MEASUREMENTS (mm) Lectotype major: HW 1.42, HL 1.64, SL 0.58, EL 0.18, PW 0.84. Paralectotype minor: HW 0.80, HL 0.80, SL 0.58, EL 0.12, PW 0.48.

COLOR Major: concolorous light reddish yellow.

Minor: body light brown, appendages brownish yellow.

Pheidole weiseri Wilson 2003.jpg

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

Type Material

ARGENTINA: Pucapampa, near Santa Catalina, Jujuy. Naturhistorisches Museum, Basel - as reported in Wilson (2003)


Eponymous. (Wilson 2003)


  • Santschi, F. 1923d. Pheidole et quelques autres fourmis néotropiques. Ann. Soc. Entomol. Belg. 63: 45-69 (page 64, soldier, worker, queen described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 142, fig. major, minor described; Raised to species)

References based on Global Ant Biodiversity Informatics

  • Kusnezov N. 1978. Hormigas argentinas: clave para su identificación. Miscelánea. Instituto Miguel Lillo 61:1-147 + 28 pl.
  • 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.