Pheidole pilosior

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

Pheidole pilosior casent0172979 profile 1.jpg

Pheidole pilosior casent0172979 dorsal 1.jpg

Specimen Label

The type colony was collected by Cover in a heavily grazed creek floodplain forest, nesting beneath a stone in shade. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


Only known from the type locality in Texas.

Distribution based on Regional Taxon Lists

Nearctic Region: United States (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.

  • pilosior. Pheidole pilosior Wilson, 2003: 157, figs. (s.w.) U.S.A.

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 crassicornis group, similar to Pheidole crassicornis, Pheidole diversipilosa, Pheidole porcula, Pheidole tetra and Pheidole vallicola, and differing in the following combination of traits.

Major: reddish to dark brown; rugoreticulum of head forms a broad swath from eye to frontal carinae; pilosity very dense, forming a thick fringe of short hairs around the head and a thick mat of hairs of short to medium length on the first gastral tergite; petiolar node in side view tapered to a blunt point at the apex; postpetiolar node laterally acute-angulate; basal segment of scape 2! broader than distal segment.

Minor: dark brown; posterior dorsal half of head and promesonotal dorsum smooth and shiny.

MEASUREMENTS (mm) Holotype major: HW 1.54, HL 1.58, SL 0.86, EL 0.20, PW 0.76. Paratype minor: HW 0.54, HL 0.68, SL 0.74, EL 0.14, PW 0.38.

COLOR Major: head rich medium reddish brown, with broad area of vertex covering central half of head capsule dark brown; body dark brown; legs medium brown.

Minor: most of body and antennae dark, almost blackish brown; lateral wings of clypeus and legs medium brown.

Pheidole pilosior Wilson 2003.jpg

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

Holotype Specimen Labels

Type Material

TEXAS: Limpia Canyon creekbed, Davis Mts., Jeff Davis Co., southwestern Texas, col. Stefan Cover. Museum of Comparative Zoology


L pilosior, hairier.