Pheidole angusticeps

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

Pheidole angusticeps jtlc000016320 p 1 high.jpg

Pheidole angusticeps jtlc000016320 d 1 high.jpg

Specimen Labels


This species occurs in second growth dry forest habitats in northwestern Costa Rica. It has been collected at tuna baits on the ground, in samples of leaf litter, and as prey of Neivamyrmex alfaroi. (Longino 2009)


The minor of Pheidole angusticeps has a narrow head, with CI 80–83. (Longino 2009)

Keys including this Species


Known from northwestern Costa Rica.

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica (type locality), El Salvador, Honduras.

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.

  • angusticeps. Pheidole angusticeps Wilson, 2003: 609, figs. (s.w.) COSTA RICA. Senior synonym of gradifer: Longino, 2009: 12.
  • gradifer. Pheidole gradifer Wilson, 2003: 613, figs. (s.w.) COSTA RICA. Junior synonymy of angusticeps: Longino, 2009: 12.

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


DIAGNOSIS A member of the punctatissima group uniquely characterized by the elongate head of the minor; and by the bidentate hypostoma and dense, short, uniform, and subappressed gastral pilosity of the major. See also the sparse, paired mesosomal pilosity of the mesosoma in both major and minor.

MEASUREMENTS (mm) Holotype major: HW 0.98, HL 1.08, SL 0.64, EL 0.18, PW 0.50. Paratype minor: HW 0.46, HL 0.60, SL 0.66, EL 0.14, PW 0.34.

COLOR Major: yellow with faint reddish tint ("light orange").

Minor: concolorous medium yellow.

Pheidole angusticeps Wilson 2003.jpg

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

Paratype Specimen Labels

Type Material

COSTA RICA: Isla San Jose, Islas Murciellagos, Santa Rosa National Park, Guanacaste, col. David Olson. Museum of Comparative Zoology

Longino (2009) - Pheidole gradifer Holotype major worker and associated minor paratype worker: Costa Rica, Guanacaste, Santa Rosa National Park, 1km E station, 280m, 19 Oct 1992, tropical dry forest, tuna bait (Olson) Museum of Comparative Zoology (examined). Bolton et al. 2006: emended to P. gradifera.


L angusticeps, narrow-headed, with reference to the minor.


References based on Global Ant Biodiversity Informatics

  • INBio Collection (via Gbif)
  • Longino J. T. 2009. Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae). Zootaxa 2181: 1-90.
  • Smith M. A., W. Hallwachs, D. H. Janzen. 2014. Diversity and phylogenetic community structure of ants along a Costa Rican elevational gradient. Ecography 37(8): 720-731.
  • Wetterer J. K., M. J. Liles, J. M. Sermeno, L. Serrano Cervantes, E. E. Echeverria, R. M. Estrada Hernandez, A. Henriquez, D. Perez, D. A. Sanchez Garcia, C. E. Gomez Peralta, R. Lopez Sorto, and G. Melendez. 2016. Predaceous fie ants (Hymenoptera: Formicidae) at sea turtle (Testudines: Cheloniidae) nestig beaches and hatcheries in El Salvador. Florida Entomologist 99(1): 106-109.