Pheidole gibba

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Pheidole gibba
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. gibba
Binomial name
Pheidole gibba
Mayr, 1887

Pheidole gibba casent0919776 p 1 high.jpg

Pheidole gibba casent0919776 d 1 high.jpg

Specimen Labels

Synonyms

Nothing is known about the biology of gibba.

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

Rio de Janeiro and Santa Catarina states, Brazil. (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • gibba. Pheidole gibba Mayr, 1887: 590 (s.), 604 (w.) BRAZIL. Senior synonym of lopesi: Kempf, 1972b: 455. See also: Wilson, 2003: 695.
  • lopesi. Pheidole gibba var. lopesi Borgmeier, 1937b: 233 (s.w.) BRAZIL. Junior synonym of gibba: Kempf, 1972b: 455.

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

Description

From Wilson (2003): DIAGNOSIS Very distinctive within Pheidole as a whole.

Major: large; slender; humeri very prominent, subangulate, each forming a large equilateral triangle in dorsal-oblique view; pronotum with transversely rugulose dorsum and vertically carinulate sides; all of dorsal surface of head carinulate except occiput and frontal triangle, which are smooth; carinulae that originate from posterior half of sides of frontal lobes curve laterally and then posteriorly; postpetiole diamond-shaped from above.

Minor: humeri as in major (q.v.); all of mesosomal dorsum foveolate; occiput narrowed, with nuchal collar.

MEASUREMENTS (mm) Lectotype major: HW 1.96, HL 2.10, SL 1.22, EL 0.24, PW 0.98. Paralectotype minor: HW 0.84, HL 1.00, SL 1.12, EL 0.18, PW 0.58.

COLOR Major: concolorous medium reddish brown.

Minor: body light reddish brown, appendages brownish yellow.


Pheidole gibba Wilson 2003.jpg

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

Type Material

BRAZIL: Santa Catarina. Naturhistorisches Museum Wien, Vienna - as reported in Wilson (2003)

Etymology

L gibba, humpbacked, referring to the extended humeri. (Wilson 2003)

References

  • Kempf, W. W. 1972d. A study of some Neotropical ants of genus Pheidole Westwood. I. (Hymenoptera: Formicidae). Stud. Entomol. 15: 449-464 (page 455, senior synonym of lopesi)
  • Mayr, G. 1887. Südamerikanische Formiciden. Verh. K-K. Zool.-Bot. Ges. Wien 37: 511-632 (page 590, 604, soldier described, worker described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 695, fig. major, minor described)