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Species: Pheidole gilva   Wilson, 2003 

Classification:
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Taxonomic History (provided by Barry Bolton, 2019)

Pheidole gilva Wilson, 2003A: 427, figs. (s.w.) PERU. Neotropic. AntCat AntWiki HOL

Distribution:

  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Peru
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Neotropical

Comments:

J. Longino, 26 Apr 2014: Pheidole caltrop (Panama), P. floricola (Costa Rica to Honduras), P. gilva (Peru), and P. pilispina (Panama) are very similar. The P. pilispina and P. gilva type major workers have head shape and HW intermediate between P. caltrop and P. floricola. Minor workers of P. caltrop, P. gilva, and P. pilispina look indistinguishable to me. Minor workers of P. floricola have a mix of foveolate and shiny sculpture on the face; the other three are uniformly foveolate. Pheidole floricola is an arboreal species, and I suspect P. gilva, P. pilispina, and P. caltrop are as well. There is no evidence of sympatry among any of these forms.

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 gilvaHNS new species

Types Mus. Comp. Zool. Harvard.

Etymology L gilvaHNS, pale yellow, alluding to color of minor.

diagnosis Similar in various traits to the species listed in the heading above, differing as follows.

Major: yellow; humeri in dorsal-oblique view are a "sharkfin" shape, pointing forward, and from above extend just beyond the margins of the pronotum below; propodeal spines more than half as long as the propodeal basal face preceding them; postpetiole from above diamond-shaped; rugoreticulum fills space between each eye and adjacent antennal fossa, and rest of dorsal head surface mostly carinulate; most of dorsal head surface and all of mesosoma foveolate.

Minor: humeri acute-angular, each bearing a long seta at the tip; occiput narrowed, with a nuchal collar; all of head, mesosoma, and waist foveolate.

Measurements (mm) Holotype major: HW 1.12, HL 1.10, SL 0.64, EL 0.14, PW 0.56.

Paratype minor: HW 0.56, HL 0.62, SL 0.62, EL 0.08, PW 0.38.

color Major: concolorous medium yellow.

Minor: concolorous pale yellow.

Range Known only from the type locality.

biology The type colony was found in mature terra firme rainforest, nesting in a 8-cm-wide dead branch 3 m from the ground.

figure Upper: holotype, major. Lower: paratype, minor. PERU: Cuzco Amazonico, 15 km northeast of Puerto Maldonado, Madre de Dios (Stefan Cover and John E. Tobin). Scale bar = 1 mm.

Specimen Habitat Summary

Elevations: collected at 200 m

Type specimens: paratype Pheidole gilva: casent0644208, jtlc000016389



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