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Species: Pheidole cavifrons   Emery, 1906 

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Taxonomic History (provided by Barry Bolton, 2019)

Pheidole cavifrons Emery, 1906c PDF: 144, fig. 21 (s.w.) URUGUAY. Neotropic. AntCat AntWiki HOL

Taxonomic history

Combination in Pheidole (Elasmopheidole): Emery, 1915g PDF: 190.
Senior synonym of Pheidole fuscipunctis: Gallardo, 1932d PDF: 182; of Pheidole arciruga: Wilson, 2003A: 132.


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Argentina, Brazil, 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 cavifrons EmeryHNS

Pheidole cavifrons EmeryHNS 1906c: 144. Syn.: Pheidole arcirugaHNS Forel 1908h: 381, n. syn. Types Mus. Civ. Stor. Nat. Genova.

Etymology l cavifronsHNS, hollow front, evidently referring to the deep antennal scrobes.

Diagnosis Closest to longiorHNS, somewhat less similar to aberransHNS and obnixaHNS, distinguished as follows.

Major: head markedly elongate (Head Length/Head Width 1.39); concolorous yellow; hypostoma toothless; dorsal posterior half of head flat; frontal lobes in full-face view with lobose anterior margins; carinulae originating on frontal lobes end far short of midpoint between eyes and occiput; mesonotal convexity in side view reduced; propodeal spines strongly developed; promesonotum smooth and shiny.

Minor: pronotal dorsum covered by semicircular carinulae.

Measurements (mm) Lectotype major: HW 0.76, HL 1.06, SL 0.34, EL 0.06, PW 0.54. Minor: HW 0.46, HL 0.52, SL 0.34, EL 0.04, PW 0.32. color Major: concolorous medium yellow. Minor: concolorous pale yellow.

Range Recorded from Buenos Aires, Argentina; Uruguay; and Rio Grande do Sul and Parana, Brazil. biology The type colony of synonymous " arcirugaHNS " was collected from a termite mound in Rio Grande do Sul.

figure Upper: lectotype, major (La Sierra, Uruguay). Lower: minor (" arcirugaHNS " syntype, Rio Grande do Sul, Brazil, compared with cavifronsHNS paralectotype). Scale bars = 1 mm.

Specimen Habitat Summary

Found most commonly in these microhabitats: 1 times nid sous les pierres, 2 times in termitenhügel.

Type specimens: Lectotype of Pheidole cavifrons: casent0904311; paralectotype of Pheidole cavifrons: casent0904312; syntype of Pheidole arciruga: casent0904315, casent0908303; syntype of Pheidole cavifrons fuscipunctis: casent0913288, casent0913289

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