Pheidole nitidula

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Pheidole nitidula
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. nitidula
Binomial name
Pheidole nitidula
Emery, 1888

Pheidole nitidula casent0904327 p 1 high.jpg

Pheidole nitidula casent0904327 d 1 high.jpg

Specimen Labels


Nothing is known about the biology of nitidula.


See the description in the nomenclature section.

Keys including this Species


I have verified material from Buenos Aires, Córdova, Misiones, and Salta in Argentina, and Rio Grande do Sul in Brazil. Kempf (1972b) also reports it from Rio de Janeiro. (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality), Brazil.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Association with Other Organisms

  • This species is a host for the eucharitid wasp Orasema argentina (a parasite) (Universal Chalcidoidea Database) (primary host).
  • This species is a host for the eucharitid wasp Orasema worcesteri (a parasite) (Universal Chalcidoidea Database) (primary host).






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

  • nitidula. Pheidole triconstricta var. nitidula Emery, 1888e: 693 (s.w.) ARGENTINA. Santschi, 1929d: 281 (q.m.). Raised to species: Emery, 1906c: 154. Senior synonym of daguerrei, perversa, richteri, silvicola, strobeli (and its junior synonym misera) and material of the unavailable names labrata, vicina referred here: Wilson, 2003: 328.
  • strobeli. Pheidole strobeli Emery, 1906c: 149 (s.w.) ARGENTINA. Goni, Zolessi & Imai, 1983: 365 (k.). Subspecies of cordiceps: Santschi, 1912e: 528; Bruch, 1915: 531. Status as species: Emery, 1922e: 101; Borgmeier, 1927b: 61. Subspecies of nitidula: Santschi, 1929d: 282; Kempf, 1972a: 197. Senior synonym of misera: Santschi, 1929d: 282. Junior synonym of nitidula: Wilson, 2003: 328.
  • perversa. Pheidole perversa Forel, 1908c: 373 (s.w.) BRAZIL. Subspecies of strobeli: Emery, 1922e: 101; of nitidula: Kempf, 1972a: 197. Junior synonym of nitidula: Wilson, 2003: 328.
  • richteri. Pheidole perversa subsp. richteri Forel, 1909a: 266 (s.w.q.) ARGENTINA. Forel, 1914d: 273 (m.). Subspecies of strobeli: Santschi, 1916e: 373; of nitidula: Santschi, 1929d: 281. Junior synonym of nitidula: Wilson, 2003: 328.
  • misera. Pheidole strobeli var. misera Santschi, 1916e: 373 (s.w.q.) ARGENTINA. Junior synonym of strobeli: Santschi, 1929d: 282.
  • silvicola. Pheidole strobeli subsp. silvicola Borgmeier, 1927b: 61 (s.w.) BRAZIL. [Also described as new by Borgmeier, 1928a: 39.] Subspecies of nitidula: Santschi, 1929d: 283. Junior synonym of nitidula: Wilson, 2003: 328.
  • daguerrei. Pheidole nitidula var. daguerrei Santschi, 1931e: 275 (s.w.) ARGENTINA. Junior synonym of nitidula: Wilson, 2003: 328.

Type Material

ARGENTINA: La Plata, Buenos Aires, col. C. Spegazzini. Museo Civico di Storia Naturale, Genoa - as reported in Wilson (2003) 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 fallax group, similar to Pheidole bergi, Pheidole cordiceps, Pheidole dione, Pheidole eidmanni and Pheidole pampana of southern South America, differing as follows.

Major: pilosity sparse; rugoreticulum on each side of head extends between eye and antennal fossa and anteriorly almost to border of head; vertex smooth; carinulae originating on frontal lobes not quite reaching midway between level of eyes and level of occiput; pronotal dorsum in dorsal-oblique view weakly bilobous; metanotal convexity in side view symmetrical; carinulae absent from sides of propodeum; postpetiole from above symmetrical.

Minor: pilosity sparse; pronotum in dorsal-oblique view feebly bilobate; occiput in frontal view feebly convex, nearly flat, lacking nuchal collar.

MEASUREMENTS (mm) Lectotype major: HW 1.30, HL 1.32, SL 0.84, EL 0.22, PW 0.66. Paralectotype minor: HW 0.68, HL 0.74, SL 0.82, EL 0.18, PW 0.44.

COLOR Major: concolorous reddish brown.

Minor: concolorous plain medium brown.

Pheidole nitidula Wilson 2003.jpg

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

Lectotype Specimen Labels


  • 2n = 20, karyotype = 20M (Uruguay) (Goni et al., 1983) (as Pheidole strobeli).


L nitidula, little shining one. (Wilson 2003)


  • Emery, C. 1888e. Alcune formiche della Repubblica Argentina raccolte dal Dott. C. Spegazzini. Ann. Mus. Civ. Stor. Nat. 26[=(2)(6): 690-694 (page 693, soldier, worker described)
  • Emery, C. 1906c [1905]. Studi sulle formiche della fauna neotropica. XXVI. Bull. Soc. Entomol. Ital. 37: 107-194 (page 154, raised to species)
  • Santschi, F. 1929d. Nouvelles fourmis de la République Argentine et du Brésil. An. Soc. Cient. Argent. 107: 273-316 (page 281, queen, male described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 328, fig. major, minor described, Senior synonym of strobeli, perversa, richteri, misera, silvicola, daguerrei)