Current View: All Antweb
Change View
Cite this page

Citing AntWeb


To cite this page, please use the following:

· For print:      Citation: AntWeb. Version 8.63.2. California Academy of Science, online at Accessed .

· For web:

Species: Pheidole casta   Wheeler, 1908 

Download Data

Taxonomic History (provided by Barry Bolton, 2021)

Pheidole casta Wheeler, 1908h PDF: 454, pl. 26, figs, 22, 23 (s.w.) U.S.A. (Texas). Nearctic. AntCat AntWiki HOL

Taxonomic history

Status as species: Wheeler, 1910a PDF: 564; Emery, 1922c PDF: 105; Creighton, 1950a PDF: 174; Smith, 1951c PDF: 801; Gregg, 1959 PDF: 15 (in key); Smith, 1979: 1368; Bolton, 1995b: 319; Wilson, 2003a: 392 (redescription).
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: United States
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press

Pheidole casta WheelerHNS

Pheidole casta WheelerHNS 1908h: 454.

Types Mus. Comp. Zool. Harvard; Amer. Mus. Nat. Hist.

Etymology Unknown.

Diagnosis A medium-sized, yellow member of the flavensHNS group, whose major is characterized by its elongate head, shallow antennal scrobes, exclusively carinulate cephalic structure, conulate postpetiole, and slightly contrasting brownish spot on the center of the dorsum of the head capsule.

Similar to meraHNS, also of Texas, and distinguished from it by the less bulbous premesonotal profile in dorsal-oblique view, smooth occiput, and longitudinal (not oblique) orientation of the carinulae mesad to the eye. Measurements (mm) Lectotype major: HW 0.82, HL 1.14, SL 0.38, EL 0.14, PW 0.52. Paralectotype minor: HW 0.42, HL 0.48, SL 0.34, EL 0.06, PW 0.26.

color Major: concolorous yellow, with a circular patch of slightly contrasting brownish yellow in center of dorsum of head. Minor: concolorous clear yellow.

Range Southern Texas. Specimens from Estado Mexico (km 127, Highway 57) in the Museum of Comparative Zoology appear to belong to this species, although they are darker in color than the types (brownish yellow), and the sides of the heads of the minors are smooth and shiny.

biology P. castaHNS is evidently a rare species. The type colony was found in a canyon of the Rio Grande, near Langtry, nesting in soil beneath cedars. The only other Texan record is from Cameron Co., about 20 km east of Brownsville (R. E. Gregg). The minor worker from this collection has the head and mesosomal dorsum completely foveolate.

figure Upper: lectotype, major. Lower: paralectotype, minor. TEXAS: Canyon of the Rio Grande, Langtry, Texas (W. M. Wheeler). Scale bars = 1 mm.

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in tumulus to one side of nest entrance in full sun, 1 times found in mesquite woodland, 1 times found in Urban backyard, 1 times found in Peach orchard.

Found most commonly in these microhabitats: 1 times under dung, 1 times soil, 1 times at potato chip crumbs on bare soil, ground.

Collected most commonly using these methods: 1 times at potato chip crumbs on bare soil, 1 times hand collection.

Elevations: collected at 22 m

Collect Date Range: collected between 1938-05-05 and 2002-01-24

Type specimens: Not Provided: casent0339739

See something amiss? Send us an email.