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Species: Pheidole obnixa   Forel, 1912 

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Taxonomic History (provided by Barry Bolton, 2022)

Pheidole arciruga r. obnixa Forel, 1912g PDF: 236 (w.) ARGENTINA (Buenos Aires). Neotropic. Primary type information: Primary type material: lectotype minor worker (by designation of Wilson, 2003a: 138). Primary type locality: lectotype Argentina: Buenos Aires (Richter). Primary type depository: MHNG. Secondary type information: Secondary type locality: same as for lectotype. Secondary type depository: MHNG. Type notes: Original description cites only syntype minor workers (number not stated). Wilson, 2003a: 138, incorrectly nominates a paralectotype major worker that is not from the type series. AntCat AntWiki HOL

Taxonomic history

Lectotype designation: Wilson, 2003a: 138.
Forel, 1913m PDF: 231 (s.q.)
Status as species: Santschi, 1925e PDF: 157; Gallardo, 1932d PDF: 179 (in key); Kempf, 1972b PDF: 184; Bolton, 1995b: 326; Wilson, 2003a: 138 (redescription).
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Argentina, Costa Rica
  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 obnixaHNS Forel

Pheidole arciruga r. obnixaHNS Forel 1913m: 231. Raised to species level by Santschi 1925e: 157. Types Mus. Hist. Nat. Geneve.

Etymology L obnixaHNS, steadfast, resolute, allusion unknown.

diagnosis Similar to aberransHNS, cavifronsHNS, and longiorHNS, distinguished as follows.

Major: head comparatively short (Head Length/Head Width 1.2 mm, the same as aberransHNS, much shorter than cavifronsHNS and longiorHNS)', pronotal dorsum covered by widely spaced longitudinal carinulae, with those near the midline curving outward toward the rear; occiput covered by transverse carinulae; humerus, mesonotal convexity, and propodeal spines well developed; a low lobe present on profile of postpetiolar venter. Minor: pronotum covered by semicircular carinulae.

Measurements (mm) Paralectotype major (Rosario de Santa Fe, Argentina): HW 1.20, HL 1.34, SL 0.50, EL 0.14, PW 0.60. Lectotype minor (Buenos Aires): HW 0.52, HL 0.54, SL 0.40, EL 0.08, PW 0.34. color Major: concolorous light brown.

Minor: mesosomal waist yellowish brown, head and gaster light brown. Range Buenos Aires, Cordoba, and Santa Fe, in Argentina. Biology Unknown.

Figure Upper: paralectotype, major (Rosario de Santa Fe, Argentina; only tentatively associated with lectotype minor). Lower: lectotype, minor (Buenos Aires, Argentina). Scale bars = 1 mm.

Specimen Habitat Summary

Type specimens: Lectotype of Pheidole obnixa: casent0908304; paralectotype of Pheidole obnixa: casent0908305

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