Pheidole tarchon

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

The type colony was collected in alder woods in a ravine; a winged queen was in the nest on 30 January. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


Only known from the type locality.

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • tarchon. Pheidole tarchon Wilson, 2003: 517, figs. (s.w.) ARGENTINA.

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


DIAGNOSIS Similar to Pheidole tetrica and Pheidole victima, distinguished as follows.

Major: brownish yellow; head covered by carinulae, except for occiput, the frontal triangle, strip behind the frontal triangle, and midclypeus; dorsal profile of promesonotum flat, dropping steeply to metanotum through a posterior face; head quadrate, Head Width equaling Head Length, antennal scape long, its tip touching the side of the head in full-face view two-thirds from eye to occipital corner; petiolar node in side view thick, with broad, semicircular apex; postpetiole from above bell-shaped; anterior fringe of pronotal dorsum carinulate, and mesosoma otherwise completely smooth and shiny.

Minor: promesonotal profile in side view flat; body almost completely smooth and shiny; antennal scape long; occiput moderately narrowed in full-face view but lacking nuchal collar.

MEASUREMENTS (mm) Holotype major: HW 1.22, HL 1.22, SL 0.82, EL 0.18, PW 0.52. Paratype minor: HW 0.68, HL 0.72, SL 0.66, EL 0.14, PW 0.40.

COLOR Major and minor: concolorous brownish yellow.

Pheidole tarchon Wilson 2003.jpg

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

Type Material

ARGENTINA: 3 km northeast of Tafí del Valle, Tucumán, about 2200 m, col. W. L. Brown. Museum of Comparative Zoology


Named after Tarchon, founder of Tarquinii and the Etruscan dodecapolis.