Pheidole christopherseni

In Costa Rica, christopherseni has been found in rainforest to 600 m, and in Colombia once in seasonal dry forest. This bizarre little species is strictly arboreal so far as is known. The type colony was nesting in a “very thin hollow stem” (Forel). Longino (1997). reports colonies from Costa Rica in the live, hollow stems of Bauhinia vines (a legume), as well as in a bignoniaceous liana, a small tree, and Cecropia saplings. (Wilson 2003)

Identification
See the description in the nomenclature section.

Distribution
In addition to the type locality (Panama), Longino (1997). has recorded christopherseni from the Atlantic lowlands of Costa Rica and the Tayrona National Park of Colombia. (Wilson 2003)

Distribution based on Regional Taxon Lists
Neotropical Region: Colombia, Costa Rica, Honduras, Mexico, Panama.

Worker
Minor

Images from AntWeb
Major

Nomenclature

 *  christopherseni. Pheidole christopherseni Forel, 1912f: 229 (s.w.) PANAMA. See also: Wilson, 2003: 400.

Description
From Wilson (2003): One of the most distinctive of all Pheidole species, marked by extremely small size, greatly elongated head of the major, and almost complete lack of carinulae anywhere on the bodies of major and minor, even around the antennal fossae and on the metapleural gland bulla. In some series at least, majors have faint longitudinal carinulae on the frontal lobes, and both castes have a few such traces on sides of the head anterior to the eyes.

MEASUREMENTS (mm) Syntype major: HW 0.34, HL 0.40, SL 0.34, EL 0.06, PW 0.24. Minor not measured.

COLOR Major: concolorous medium yellow.

Minor: concolorous pale yellow.



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

Type Material
PANAMA. - as reported in Wilson (2003)

Etymology
Eponymous. (Wilson 2003)

References based on Global Ant Biodiversity Informatics

 * Branstetter M. G. and L. Sáenz. 2012. Las hormigas (Hymenoptera: Formicidae) de Guatemala. Pp. 221-268 in: Cano E. B. and J. C. Schuster. (eds.) 2012. Biodiversidad de Guatemala. Volumen 2. Guatemala: Universidad del Valle de Guatemala, iv + 328 pp
 * Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
 * Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
 * Longino J. T., J. Coddington, and R. K. Colwell. 2002. The ant fauna of a tropical rain forest: estimating species richness three different ways. Ecology 83: 689-702.
 * Longino J. et al. ADMAC project. Accessed on March 24th 2017 at https://sites.google.com/site/admacsite/