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Species: Pheidole ajax   Forel, 1899 

Download Data

Taxonomic History (provided by Barry Bolton, 2020)

Pheidole ajax Forel, 1899e PDF: 71 (s.w.) COSTA RICA. Neotropic. AntCat AntWiki HOL

Taxonomic history

See also: Wilson, 2003a: 263.
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Colombia, Costa Rica, Nicaragua
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:

Costa Rica: Atlantic slope to 600m; Central Valley.

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 ajaxHNS Forel

Pheidole ajaxHNS Forel 1899e: 71.

Types Mus. Hist. Nat. Geneve.

Etymology Gr Ajax, legendary Greek hero of the Trojan war.

Diagnosis A large brown member of the fallaxHNS group immediately recognizable in the major by the extremely long propodeal spines; by the completely carinulate center of the head and frontal lobes, which is flanked by a rugoreticulum on either side in full-face view; and by the striate first gastral tergite.

Minor: extremely long propodeal spines and mostly smooth and shiny head and body.

Similar to fioriiHNS, hectorHNS, jaculiferaHNS, and lourothiHNS, differing in many details of body form, sculpturing, and pilosity, as depicted. measurements (mm) Major (Rio Toro Amarillo, Costa Rica): HW 1.28, HL 1.36, SL 1.16, EL 0.22, PW 0.66. Minor (Rio Toro Amarillo, Costa Rica): HW 0.56, HL 0.82, SL 1.12, EL 0.14, PW 0.40. color Major: body dark brown, appendages medium brown.

Minor: body and most appendages medium to light brown, except for yellowish brown tarsi.

Range Atlantic slope to 600 m (J. T. Longino 1997).

Biology A nest was found by Longino (1997) beneath the bark of a rotten stump in mature wet forest.

Figure Upper: major. Lower: minor. COSTA RICA: Rio Toro Amarillo, near Guapiles (William L. Brown). Minor compared with syntype in Museum d'Histoire Naturelle, Geneve, by W. O. Brown. Type locality: San Jose, Costa Rica. Scale bars = 1 mm.

Specimen Habitat Summary

Found most commonly in these habitats: 14 times found in montane wet forest, 2 times found in mature wet forest, 5 times found in wet forest, 1 times found in SSA 3400, 1 times found in tropical wet forest, 1 times found in 2nd growth rainforest, 1 times found in tropical rainforest, 2nd growth, some big trees.

Found most commonly in these microhabitats: 2 times nest in rotten wood, 2 times at bait, 1 times under bark on rotten stump., 5 times Sobre Vegetacion, 1 times Primary forest, 2 times strays, 1 times Hojarasca, 1 times beating veg..

Collected most commonly using these methods: 7 times search, 8 times Malaise, 5 times Sweeping, 1 times baiting, 1 times Lure/Bait, 1 times beating, 1 times Mini Winkler.

Elevations: collected from 50 - 880 meters, 490 meters average

Collect Date Range: collected between 1896-05-01 and 2015-06-12

Type specimens: Holotype of Pheidole ajax: jtlc000014065; syntype of Pheidole ajax: casent0904344, casent0904345

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