Pheidole diligens

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Pheidole diligens
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. diligens
Binomial name
Pheidole diligens
(Smith, F., 1858)

Pheidole diligens casent0901579 p 1 high.jpg

Pheidole diligens casent0901579 d 1 high.jpg

Specimen Labels

Two series were taken by Stefan Cover and John E. Tobin at Cuzco Amazónico, Peru, both in terra firme rainforest; one was in leaf litter, and another in soil beneath a small palm log. A series of the closely similar Pheidole radoszkowskii was collected at the same locality, but true to the general preference of that species for disturbed habitats, the colony was in seasonally flooded forest. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


Pará, Mato Grosso, Goiás, and São Paulo states, Brazil; and Amazonian Peru (Cuzco Amazónico, Madre de Dios). (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (type locality), Peru.

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.

  • diligens. Atta diligens Smith, F. 1858b: 168 (s.w.) BRAZIL. Combination in Pheidole: Mayr, 1886c: 360. See also: Wilson, 2003: 188.

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 diligens group distinguished from the very similar Pheidole inversa, Pheidole pugnax and Pheidole radoszkowskii, and other diligens group members by the following combination of traits.

Major: yellow; usually (or always) with two teeth on the hypostoma; sculpturing other than foveolation confined to the anterior half of the head capsule and consisting solely of carinulae (no rugoreticulation); all of head, mesosoma, and waist foveolate and opaque; only a narrow anterior strip of first gastral tergite foveolate and opaque, rest of gaster smooth and shiny; pilosity extremely sparse overall, and absent on the mesosoma; humerus cornulate in dorsal-oblique view; promesonotal profile with 2 (not 3) convexities in dorsal-oblique view.

Minor: occiput broad, lacking nuchal collar; head, mesosoma, and waist entirely foveolate and opaque; anterior half of first gastral tergite foveolate and opaque, with remainder of gaster smooth and shiny.

MEASUREMENTS (mm) Lectotype major: HW 1.06, HL 1.10, SL 0.76, EL 0.22, PW 0.52. Paralectotype minor: HW 0.54, HL 0.64, SL 0.74, EL 0.14, PW 0.38.

COLOR Major and minor (types): concolorous medium yellow. Fresh material from Brazil is light reddish yellow.

Pheidole diligens Wilson 2003.jpg

Figure. Upper: lectotype, major (the rear view of the petiolar node is drawn from a major from Paraopeba, Minas Gerais). Lower: paralectotype, minor (the dorsal-oblique view of the mesosoma is drawn from a minor from Goiás state, and the complete antenna is drawn from a minor from “Mt. Transpantaneira,” Brazil). Scale bars = 1 mm.

Type Material

BRAZIL: Vila Nova, “Amazonas” (Vila Nova is now in Pará state).The Natural History Museum - as reported in Wilson (2003)


L diligens, industrious. (Wilson 2003)


  • Kempf, W. W. 1964e. Miscellaneous studies on Neotropical ants. III. (Hymenoptera: Formicidae). Stud. Entomol. 7: 45-71 (page 64, replacement name: blumenauensis)
  • Santschi, F. 1923d. Pheidole et quelques autres fourmis néotropiques. Ann. Soc. Entomol. Belg. 63: 45-69 (page 50, soldier, worker described)
  • Mayr, G. 1886c. Notizen über die Formiciden-Sammlung des British Museum in London. Verh. K-K. Zool.-Bot. Ges. Wien 36: 353-368 (page 360, Combination in Pheidole)
  • Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp. (page 168, soldier, worker described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 188, fig. major, minor described)