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Species: Pheidole cramptoni   Wheeler, 1916 

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Taxonomic History (provided by Barry Bolton, 2022)

Pheidole cramptoni Wheeler, 1916c PDF: 4 (s.w.) GUYANA. Neotropic. AntCat AntWiki HOL

Taxonomic history

See also: Wilson, 2003a: 677
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Peru, Trinidad and Tobago
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:

Costa Rica, Trinidad, Guyana (type locality), Brazil (Amazonian Brazil and Mato Grosso), Ecuador, Peru. Costa Rica: Atlantic slope.


Natural History:

This species is found in mature wet forest habitats. It nests in the low arboreal zone, in dead sticks, in dead cavities in live plants, and as an occasional opportunist in domatia of myrmecophytes.

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 cramptoni WheelerHNS

Pheidole cramptoni WheelerHNS 1916c: 4. Syn.: Pheidole cramptoni subsp. petiolicola WheelerHNS 192 If: 147, synonymy by Kempf and Brown 1968: 97.

Types Mus. Comp. Zool. Harvard.

Etymology Eponymous.

diagnosis Similar to hasticepsHNS, subarmataHNS, and especially synarmataHNS.

Major: in side view frontal lobes project forward as equilateral triangles; humeri angulate, seen from above projecting slightly beyond the rest of the pronotum below it; propodeal spiracle very large, its diameter greater than the base of the propodeal spine in side view; postpetiole oval from above; head bicolored (see Color below); all of frontal lobes and space between frontal carinae filled with carinulae, which reach halfway from the level of the eyes to the level of the occiput.

Minor: propodeal spiracle large, about as wide as the base of the propodeal spine; humerus in dorsal-oblique view angulate; postpetiolar node from side well developed.

measurements (mm) Syntype major: HW 0.96, HL 1.20, SL 0.46, EL 0.10, PW 0.52. Syntype minor: HW 0.52, HL 0.58, SL 0.52, EL 0.08, PW 0.32.

color Major: anterior half of dorsum of head yellow, contrasting with yellowish brown posterior half, also with yellowish brown mid-clypeus, frontal triangle, and antennal fossae; body yellowish brown. Minor: concolorous yellowish brown.

Range Recorded from Costa Rica; Trinidad; Guyana (type locality); Mato Grosso, Brazil; and Amazonian Brazil, Ecuador, and Peru.

biology Longino (1997) found two colonies in primary rainforest on the Costa Rican Atlantic slope, one nesting in a rotting cavity of a live branch, the other in a dead stick. Douglas Yu (specimen data) discovered a colony in Peru in cavities of the myrmecophyte Cordia nodosa. Colonies have been found in rainforest nesting in dead sticks and in the cavities of live myrmecophytes of the genera Cordia and Piper. Winged reproductives have been collected in nests in different localities from April to November.

Figure Upper: syntype, major. Lower: syntype, minor. GUYANA: Kartabo (W. M. Wheeler). Scale bars = 1 mm.

Specimen Habitat Summary

Found most commonly in these habitats: 15 times found in 2º lowland rainforest, 14 times found in montane wet forest, 9 times found in mature wet forest, 8 times found in rainforest, 7 times found in tropical rainforest, 4 times found in tropical moist forest, 1 times found in Primary forest at river edge, 1 times found in premontane rainforest, 1 times found in LEP 3200, 1 times found in wet forest fragment, ...

Found most commonly in these microhabitats: 21 times ex sifted leaf litter, 14 times at bait, 4 times Sobre Vegetacion, 1 times in rotten cavity in live branch, 1 times Foraging at base of dead stem., 1 times Primary forest, 1 times nest in melastome leaf base, 1 times nest in dead stick., 3 times Hojarasca, 2 times ex rotten log, 2 times copa de árbol, ...

Collected most commonly using these methods: 18 times miniWinkler, 14 times Baiting, 9 times search, 5 times Malaise, 4 times Sweeping, 4 times Beating, 3 times Fogging, 1 times Lure/Bait, 3 times Mini Winkler, 2 times Winkler, 2 times flight intercept trap, ...

Elevations: collected from 30 - 540 meters, 207 meters average

Collect Date Range: collected between 1985-09-01 00:00:00.0 and 2015-06-12 00:00:00.0

Type specimens: Not Provided: casent0282957, casent0283447, casent0339774

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