Pheidole guerrerana

The nest of the type colony was beneath a rock in a forest clearing. A winged queen was present on 31 July. (Wilson 2003)

Identification
See the description in the nomenclature section.

Distribution
Only known from the type locality.

Distribution based on Regional Taxon Lists
Neotropical Region: Guatemala, Honduras, Mexico, Nicaragua.

Worker
Minor

Nomenclature

 *  guerrerana. Pheidole guerrerana Wilson, 2003: 156, figs. (s.w.) MEXICO.

Description
A member of the crassicornis group distinguished by the following combination of traits.

Major: rugoreticulum mesad to the eyes very extensive, reaching from near the posterior clypeal border to midway between the eye and occiput; pilosity very dense and long, especially on the dorsal surfaces of the head and on the gastral tergites; anterior strip of pronotal dorsum transversely carinulate; postpetiole from above diamond-shaped.

Minor: pilosity extremely long over most of the body; humerus subangulate in dorsal-oblique view; occiput narrowed, with rudiment of a nuchal collar.

MEASUREMENTS (mm) Holotype major: HW 1.28, HL 1.42, SL 1.02, EL 0.24, PW 0.66. Paratype minor: HW 0.58, HL 0.74, SL 0.94, EL 0.20, PW 0.42.

COLOR Major: head indistinctly bicolorous, with capsule anterior to eye level yellow and remainder yellowish brown; mesosoma and appendages yellowish brown; waist and gaster plain light brown.

Minor: indistinctly bicolorous, with head capsule posterior to anterior margin of eye as well as gaster and postpetiolar dorsum light brown; remainder of body dark yellow to brownish yellow.



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

Type Material
MEXICO: at road 3.5 km below Omilteme, Guerrero, 2000 m (Cornell University Field Party).

Etymology
Named after the Mexican state of origin.

References based on Global Ant Biodiversity Informatics

 * Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
 * Longino J. T. 2013. Ants of Nicargua. Consulted on 18 Jan 2013. https://sites.google.com/site/longinollama/reports/ants-of-nicaragua
 * Longino J. T. L., and M. G. Branstetter. 2018. The truncated bell: an enigmatic but pervasive elevational diversity pattern in Middle American ants. Ecography 41: 1-12.
 * Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133
 * Wilson, E.O. 2003. Pheidole in the New World: A Dominant, Hyperdiverse Genus. Harvard University Press