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Species: Pheidole obtusopilosa   Mayr, 1887 

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Taxonomic History (provided by Barry Bolton, 2019)

Pheidole obtusopilosa Mayr, 1887 PDF: 586 (s., 602 w.) URUGUAY. Neotropic. AntCat AntWiki HOL

Taxonomic history

See also: Wilson, 2003A: 477.


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Uruguay
  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 obtusopilosaHNS Mayr

Pheidole obtusopilosaHNS Mayr 1887: 586. Raised to species level in this monograph: heterothrixHNS.

Types Naturhist. Mus. Wien.

Etymology L obtusopilosaHNS, blunt-haired, allusion uncertain.

Diagnosis Similar to heterothrixHNS, distinguished from it and other PheidoleHNS species by the following combination of traits. Major: entire dorsal surface of head rugoreticulate except for frontal lobes, frontal triangle, clypeus, and anterior genae; humeri rugoreticulate; anterior margin of pronotal dorsum carinulate; all of mesosoma and waist foveolate; postpetiole from above elliptical. Minor: almost all of body except gaster foveolate and opaque; humeri subangulate; propodeal spines moderately long and slender; occipital margin concave; nuchal collar absent.

Measurements (mm) Lectotype major: HW 1.16, HL 1.18, SL 0.54, EL 0.14, PW 0.60.

Paralectotype minor: HW 0.56, HL 0.58, SL 0.50, EL 0.10, PW 0.36.

Color Major: body light reddish brown except for gaster, which is plain medium brown.

Range Recorded from Uruguay; and, in Argentina, the northern and central provinces of Buenos Aires, Cordoba, Jujuy, La Pampa, and Tucuman (Kempf 1972b). I have confirmed a series from Sao Paulo.

biology A collection of obtusopilosaHNS was made by William L. Brown at the Boraceia Biological Station, near Salesopolis, Sao Paulo, in wet mountain forest at 850 m.

Figure Upper: lectotype, major. Lower: paralectotype, minor. URUGUAY (no further locality). Scale bars = 1 mm.

Specimen Habitat Summary

Collected most commonly using these methods: 1 times direct collection.

Elevations: collected at 200 m

Type specimens: Lectotype of Pheidole obtusopilosa: casent0916068; paralectotype of Pheidole obtusopilosa: casent0919785

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