Pheidole cardiella

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Pheidole cardiella
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. cardiella
Binomial name
Pheidole cardiella
Wilson, 2003

Pheidole cardiella jtlc000016340 p 1 high.jpg

Pheidole cardiella jtlc000016340 d 1 high.jpg

Specimen Labels

At Cuzco Amazónico Stefan Cover (personal communication) found cardiella in both terra firme and seasonally flooded rainforest, nesting in soil, litter, and small pieces of rotten wood. Colonies appeared to be small, and in some cases occupied more than one nest site. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


Recorded from the type locality and from Manabí and Pichincha Provinces of Ecuador. (Wilson 2003)

Latitudinal Distribution Pattern

Latitudinal Range: -0.6364° to -12.497473°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Ecuador, Peru (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb







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

  • cardiella. Pheidole cardiella Wilson, 2003: 390, figs. (s.w.) PERU.

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


A member of the flavens group, most similar to Pheidole goeldii, Pheidole mittermeieri, Pheidole nuculiceps, Pheidole sculptior and Pheidole striaticeps. Distinguished by the following combination of traits.

Major: head with mandibles in full-face view almost perfectly heart-shaped; antennal scrobes present; vertex near occiput conspicuously depressed; entire dorsal surface of head, except for frontal triangle, mid-clypeus, and antennal scrobes, longitudinally carinulate; carinulae originating on frontal lobes curve weakly inward as they approach occiput, and carinulae laterad to the antennal scrobes curve strongly inward to meet those originating on the frontal lobes; all of mesosoma foveolate and opaque; postpetiole diamond-shaped.

Minor: all of head and mesosoma foveolate and opaque; eye set forward on head, separated from genal border by a distance about equal to Eye Length; carinulae on head fail to reach eye level.

MEASUREMENTS (mm) Holotype major: HW 0.72, HL 0.72, SL 0.36, EL 0.08, PW 0.34. Paratype minor: HW 0.38, HL 0.42, SL 032, EL 0.06, PW 0.24.

COLOR Major: mesosoma, waist, and anterior strip of first gastral tergite yellowish brown; head and rest of gaster medium brown; appendages medium yellow.

Minor: concolorous dark yellow.

Both castes are sometimes much darker in shade.

Pheidole cardiella Wilson 2003.jpg

Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.

Type Material

PERU: Cuzco Amazónico, 15 km northeast of Puerto Maldonado, Madre de Dios, col. Stefan P. Cover and John E. Tobin. Museum of Comparative Zoology


Gr cardiella, little heart, referring to the head shape of the major.


References based on Global Ant Biodiversity Informatics

  • Bezdeckova K., P. Bedecka, and I. Machar. 2015. A checklist of the ants (Hymenoptera: Formicidae) of Peru. Zootaxa 4020 (1): 101–133.
  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.