Pheidole arhuaca

Forel found the type colony under a dried pat of cow dung. (Wilson 2003)

Identification
See the description in the nomenclature section.

Distribution
Known only from the types of arhuaca sens. str. (Colombia) and of its variety bimons (Ceará, Brazil). (Wilson 2003)

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil, Colombia.

Worker
Minor

Images from AntWeb
Major

Nomenclature

 *  arhuaca. Pheidole arhuaca Forel, 1901e: 364 (s.w.q.) COLOMBIA. Senior synonym of bimons: Wilson, 2003: 373.
 * bimons. Pheidole arhuaca r. bimons Forel, 1912f: 234 (s.w.) BRAZIL. Junior synonym of arhuaca: Wilson, 2003: 373.

Description
From Wilson (2003): A medium-sized, yellow species with conulate humerus in both major and minor, when seen in dorsal-oblique view. Close to Pheidole caulicola of Costa Rica but with less prominent humeri, longer antennal scapes, and broader, more angulate postpetiolar node in both castes, as well as completely foveolate central pronotal dorsum in the major.

Also similar but less so to Pheidole chalca, Pheidole nitidicollis, Pheidole mincana, Pheidole schmalzi and Pheidole tragica.

MEASUREMENTS (mm) Syntype major (Mus. Comp. Zool. Harvard): HW 0.80, HL 0.86, SL 0.40, EL 0.10, PW 0.44. Syntype minor (Mus. Comp. Zool. Harvard): HW 0.46, HL 0.50, SL 0.44, EL 0.06, PW 0.30.

COLOR Major and minor: concolorous yellow.



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

Type Material
COLOMBIA: San Antonio, Sierra Nevada de Santa Marta, col. Auguste Forel. and  - as reported in Wilson (2003)

Etymology
Referring to the type locality, San Antonio, an “arhuaque” (Arawak) village. (Wilson 2003)

References based on Global Ant Biodiversity Informatics

 * Forel A. 1908. Catálogo systemático da collecção de formigas do Ceará. Boletim do Museu Rocha 1(1): 62-69.
 * Forel A. 1912. Formicides néotropiques. Part III. 3me sous-famille Myrmicinae (suite). Genres Cremastogaster et Pheidole. Mémoires de la Société Entomologique de Belgique. 19: 211-237.
 * Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
 * Longino J. et al. ADMAC project. Accessed on March 24th 2017 at https://sites.google.com/site/admacsite/