Pheidole mamore

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Pheidole mamore
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. mamore
Binomial name
Pheidole mamore
Mann, 1916

Stefan Cover and John E. Tobin found this species on the floor of forest transitional from terra firme to floodplain at Cuzco Amazónico, near Puerto Maldonado, Peru. I encountered it in primary rainforest near Manaus. Colonies nest in pieces of rotten wood on the forest floor. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


In addition to the types, I have seen material from around Manaus, Amazonas, Brazil; near Puerto Maldonado, Leticia, and Tingo Maria, Peru; Suriname; and Guyana. (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (type locality), Guyana, Peru, Suriname.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Life History Traits

  • Queen number: monogynous (Frumhoff & Ward, 1992)



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

  • mamore. Pheidole (Pheidole) guilelmimuelleri subsp. mamore Mann, 1916: 429 (s.w.q.) BRAZIL. Raised to species: Wilson, 2003: 627.

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


From Wilson (2003): DIAGNOSIS Distinguished among members of the scrobifera group (as well as the somewhat similar Pheidole antillana, Pheidole avia, Pheidole bucculenta, Pheidole guilelmimuelleri, Pheidole hetschkoi, Pheidole heyeri, Pheidole hortonae, Pheidole praeses and Pheidole rhytifera in the tristis group) as follows.

Major: rugoreticulum on head limited to a patch posterior to each eye and another inside the anterior part of each antennal scrobe; anterior strip of pronotal dorsum transversely carinulate, the remainder rugoreticulate; mesonotal convexity subangulate in side view.

Minor: propodeal spines reduced to denticles; entire body smooth and shining, with the sole sculpturing being the circular carinulae around the antennal fossae.

MEASUREMENTS (mm) Lectotype major: HW 1.64, HL 1.64, SL 0.74, EL 0.20, PW 0.90. Paralectotype minor: HW 0.60, HL 0.64, SL 0.68, EL 0.14, PW 0.38.

COLOR Major: medium to dark reddish brown, appendages light reddish brown.

Minor: body plain medium (“chocolate”) brown, appendages medium brownish yellow.

Pheidole mamore Wilson 2003.jpg

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

Type Material

BRAZIL: Madeira-Mamoré railway track, km 284, Rondônia, col. W. M. Mann. Museum of Comparative Zoology - as reported in Wilson (2003)


Named after the type locality. (Wilson 2003)


  • Mann, W. M. 1916. The Stanford Expedition to Brazil, 1911, John C. Branner, Director. The ants of Brazil. Bull. Mus. Comp. Zool. 60: 399-490 (page 429, soldier, worker, queen described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 627, Raised to species: new status)

References based on Global Ant Biodiversity Informatics

  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
  • Vasconcelos, H.L., J.M.S. Vilhena, W.E. Magnusson and A.L.K.M. Albernaz. 2006. Long-term effects of forest fragmentation on Amazonian ant communities. Journal of Biogeography 33:1348-1356