Pheidole humeridens

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

At the type locality humeridens colonies occupied conspicuous mound nests in a heavily grazed pasture. (Wilson 2003)

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

Only known from the type locality.

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • humeridens. Pheidole humeridens Wilson, 2003: 301, 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.

Description

A member of the fallax group similar in various characters to Pheidole chiapasana, Pheidole dentata, Pheidole laeviventris, Pheidole madrensis, Pheidole maja and Pheidole tetroides, differing as follows.

Major: humerus dentate; rugoreticulum on sides of head extends to halfway between eyes and level of occiput; mid-occiput transversely carinulate; antennal scapes reach halfway between eyes and level of occiput; anterior edge of pronotum and all of propodeal dorsum transversely carinulate; in side view, propodeal spines short, vertical to basal propodeal face; from above, postpetiole oval.

Minor: bicolored (see below); humerus toothed; propodeal tooth small and thin; propodeal dorsum carinulate; occiput in full-face view flat.

MEASUREMENTS (mm) Holotype major: HW 1.50, HL 1.56, SL 1.02, EL 0.26, PW 0.78. Paratype minor: HW 0.74, HL 0.80, SL 0.94, EL 0.20, PW 0.46.

COLOR Major: brownish yellow, with rear halves of gastral tergites changing to light brown.

Minor: bicolored, with head, gaster, and pronotal dorsum medium brown, and rest of body and appendages brownish yellow.


Pheidole humeridens Wilson 2003.jpg

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

Type Material

ARGENTINA: Buenos Aires, col. James C. Trager. Museum of Comparative Zoology

Etymology

L humeridens, shoulder-tooth.

References