Pheidole obscurifrons

Nothing is known about the biology of obscurifrons.

Identification
See the description in the nomenclature section.

Distribution
Recorded from Santa Fé and Córdoba, Argentina (Kempf 1972b).

Distribution based on Regional Taxon Lists
Neotropical Region: Argentina.

Worker
Minor

Nomenclature

 *  obscurifrons. Pheidole (Elasmopheidole) aberrans var. obscurifrons Santschi, 1925e: 158 (s.w.) ARGENTINA. Raised to species: Wilson, 2003: 139.

Description
From Wilson (2003): Major: large; yellow; frontal lobes in side view form blunt right angles; in full-face view the mesad anterior border is straight and the lateral anterior border concave, the two coming together as a blunt angle that approaches within an Eye Length of the anterior clypeal border; all of the dorsal surface of the head carinulate except the centers of the clypeus and occiput; upper section of mesopleuron carinulate and foveolate; low, forward-directed process present on postpetiolar venter.

Minor: all of dorsum and sides of head except vertex and frontal triangle carinulate; pronotal dorsum covered by semicircular carinulae; mesopleuron foveolate.

MEASUREMENTS (mm) Lectotype major: HW 1.70, HL 2.00, SL 0.62, EL 0.16, PW 0.90. Paralectotype minor: HW 0.76, HL 0.82, SL 0.62, EL 0.10, PW 0.50.

COLOR Major: concolorous reddish brown.

Minor: concolorous plain yellow.



'''Figure. Upper: lectotype, major. Lower: paralectotype, minor. Scale bars = 1 mm.'''

Type Material
ARGENTINA: Fives Lille, Santa Fé. - as reported in Wilson (2003)

Etymology
L obscurifrons, dark or indistinct brown, allusion unknown. (Wilson 2003)

References based on Global Ant Biodiversity Informatics

 * Cuezzo, F. 1998. Formicidae. Chapter 42 in Morrone J.J., and S. Coscaron (dirs) Biodiversidad de artropodos argentinos: una perspectiva biotaxonomica Ediciones Sur, La Plata. Pages 452-462.
 * Gallardo A. 1932. El subgénero Elasmopheidole en la República Argentina (Himenopteros Formicidos). Revista Chilena de Historia Natural 36: 178-182.
 * Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
 * Santschi F. 1925. Fourmis des provinces argentines de Santa Fe, Catamarca, Santa Cruz, Córdoba et Los Andes. Comunicaciones del Museo Nacional de Historia Natural "Bernardino Rivadavia" 2: 149-168.
 * Vittar, F. 2008. Hormigas (Hymenoptera: Formicidae) de la Mesopotamia Argentina. INSUGEO Miscelania 17(2):447-466
 * Vittar, F., and F. Cuezzo. "Hormigas (Hymenoptera: Formicidae) de la provincia de Santa Fe, Argentina." Revista de la Sociedad Entomológica Argentina (versión On-line ISSN 1851-7471) 67, no. 1-2 (2008).