Pheidole hazenae

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

Pheidole hazenae casent0635472 p 1 high.jpg

Zona Buenos Aires, Colombia: in second-growth forest. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


Known only from the type locality and a single Colombian accession (Zona Buenos Aires, 600–800 m, Charles Kugler). In the second series the specimens are larger and darker than the type and may represent a distinct species. (Wilson 2003)

Latitudinal Distribution Pattern

Latitudinal Range: 9.4857096° to 9.4857096°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Colombia, Ecuador (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.

  • hazenae. Pheidole hazenae Wilson, 2003: 434, figs. (s.w.) ECUADOR.

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


A medium-sized, yellow member of the flavens group, similar to Pheidole camilla but differing in the major caste in the moderately convex profile of the head (not bulging as in camilla), exclusively carinulate (as opposed to partly rugulose and rugoreticulate) sculpturing of the dorsal head surface, and the vertical, forward-curving propodeal spine as viewed from the side.

At 50–60X the tips of the mesosomal and gastral hairs are not flattened as in camilla. Also similar in some features to Pheidole alticola, Pheidole euryscopa, Pheidole heterothrix, Pheidole rectiluma, Pheidole rectisentis, Pheidole rectispina and Pheidole rectitrudis, and notably different in others as illustrated.

Minor: not diagnosed.

MEASUREMENTS (mm) Major: HW 0.86, HL 0.90, SL 0.46, EL 0.10, PW 0.40.

COLOR Major: concolorous yellow.

Pheidole hazenae Wilson 2003.jpg

Figure. Unique holotype, major. Scale bars = 1 mm.

Type Material

ECUADOR: Rio Palenque Station, 47 km south of Santo Domingo, Pachincha, col. Stewart B. and Jarmila Kukalová-Peck. Museum of Comparative Zoology


Named in honor of Anne-Eve Hazen, in recognition of her outstanding contribution in service and support to tropical conservation, hence the habitats in which the Pheidole ants will continue to exist.


References based on Global Ant Biodiversity Informatics

  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Longino J. T. L., and M. G. Branstetter. 2018. The truncated bell: an enigmatic but pervasive elevational diversity pattern in Middle American ants. Ecography 41: 1-12.
  • Longino J. et al. ADMAC project. Accessed on March 24th 2017 at