Pheidole lilloi

AntWiki: The Ants --- Online
Pheidole lilloi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. lilloi
Binomial name
Pheidole lilloi
(Kusnezov, 1952)

Nothing is known about the biology of lilloi.


See the description in the nomenclature section.

Keys including this Species


Recorded from Tucumán and Misiones, Argentina. (Wilson 2003)

Latitudinal Distribution Pattern

Latitudinal Range: -26.808285° to -26.831434°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.




The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • lilloi. Elasmopheidole lilloi Kusnezov, 1952b: 74 (s.w.) ARGENTINA. Combination in Pheidole (Elasmopheidole): Kempf, 1972a: 184. See also: Wilson, 2003: 135.

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 fracticeps, differing from it and other species of the group by the following combination of traits.

Major: very small; brownish yellow with brown spot on vertex; hypostoma 4-toothed; in side view, occiput projects out like a brow, its apex rounded and the profile of the head below it dipping away as a strong convexity; in full-face view, occiput bearing several widely spaced carinulae that travel from the dorsal midline obliquely toward the occipital corners; eye oval, placed forward to its anterior border is only a little more than an Eye Length from the anterior genal border.

Minor: almost all of head, mesosoma, and waist foveolate; most of dorsal surface of head carinulate, with a rugoreticulum mesad to each eye.

MEASUREMENTS (mm) Lectotype major: HW 0.64, HL 0.84, SL 0.30, EL 0.12, PW 0.40. Paralectotype minor: HW 0.40, HL 0.44, SL 0.32, EL 0.06, PW 0.24.

COLOR Major: overall brownish yellow, with a light brown spot on the vertex.

Minor: overall brownish yellow except for posterior half of dorsum of head, which is medium brown.

Pheidole lilloi Wilson 2003.jpg

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

Type Material

ARGENTINA: Tucumán. Fundacion e Instituto Miguel Lillo and Museum of Comparative Zoology - as reported in Wilson (2003)


Named after Miguel Lillo. (Wilson 2003)


  • Kempf, W. W. 1972b. Catálogo abreviado das formigas da regia~o Neotropical. Stud. Entomol. 15: 3-344 (page 184, Combination in Pheidole (Elasmopheidole))
  • Kusnezov, N. 1952d [1951]. El género Pheidole en la Argentina (Hymenoptera, Formicidae). Acta Zool. Lilloana 12: 5-88 (page 74, soldier, worker described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 135, fig. major, minor described)

References based on Global Ant Biodiversity Informatics

  • Cuezzo, F. 1998. Formicidae. Chapter 42 in Morrone J.J., and S. Coscaron (dirs) Biodiversidad de artropodos argentinos: una perspectiva biotaxonomica Ediciones Sur, La Plata. Pages 452-462.
  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
  • Kusnezov N. 1952. El género Pheidole en la Argentina (Hymenoptera, Formicidae). Acta Zoologica Lilloana 12: 5-88.
  • Kusnezov N. 1978. Hormigas argentinas: clave para su identificación. Miscelánea. Instituto Miguel Lillo 61:1-147 + 28 pl.
  • Kusnezov, N. "Lista de las hormigas de Tucumán con descripción de dos nuevos géneros (Hymenoptera, Formicidae)." Acta Zoologica Lilloana 13 (1953): 327-339.
  • Vittar, F. 2008. Hormigas (Hymenoptera: Formicidae) de la Mesopotamia Argentina. INSUGEO Miscelania 17(2):447-466