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Species: Pheidole psilogaster   Wilson, 2003 

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Taxonomic History (provided by Barry Bolton, 2023)

Pheidole psilogaster Wilson, 2003a: 341, figs. (s.w.) MEXICO (Veracruz). Neotropic. Primary type information: Primary type material: holotype major worker. Primary type locality: Mexico: Veracruz, Los Tuxtlas, 10 km. NNW Sontecomapan, 18°35’N, 95°05’W, 500 m., 21.iii.1985, no. 7369-32 (P.S. Ward). Primary type depository: MCZC. Secondary type information: Secondary type material: 1 tentative paratype minor worker. Secondary type locality: same as for holotype. Secondary type depository: MCZC. Type notes: Details of paratype castes and their numbers are not given. AntCat AntWiki HOL

Taxonomic history

// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, Panama
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:

Mexico (type locality) to Costa Rica. Costa Rica: Atlantic slope to 1200m and southern Pacific lowlands.


This species occurs in wet forest habitats from sea level to 1400m elevation. It is known mainly from baits on the forest floor, and occasionally workers occur in Winkler and Berlese samples. Major workers often recruit to baits along with minor workers. D. J. Cox collected a nest in standing dead wood.


See Comments under P. acamata.

Taxonomic Treatment (provided by Plazi)

Scientific Name Status Publication Pages ModsID GoogleMaps
Pheidole psilogaster new species  Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press: 341, (download) 341 20017
Pheidole psilogaster   Longino, J. T., 2009, Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae)., Zootaxa 2181, pp. 1-90: 66, (download) 66 22820

Specimen Habitat Summary

Found most commonly in these habitats: 30 times found in tropical wet forest, 33 times found in mature wet forest, 38 times found in tropical rainforest, 24 times found in montane wet forest, 12 times found in mesophil forest, 16 times found in 2nd growth forest, 12 times found in lowland wet forest, 10 times found in 2nd growth vegetation, 5 times found in tropical rainforest, some big trees, 6 times found in 2º wet forest, ...

Found most commonly in these microhabitats: 155 times at bait, 47 times ex sifted leaf litter, 2 times Primary forest, 4 times Hojarasca, 5 times beating vegetation, 2 times forest litter, 3 times Sobre Vegetacion, 3 times sifted litter, 1 times nest in dead Piper stem, 2 times at baits, 1 times Primary, ...

Collected most commonly using these methods: 151 times Baiting, 30 times miniWinkler, 11 times Winkler, 12 times MaxiWinkler, 3 times Lure/Bait, 4 times bait, 4 times search, 5 times Malaise, 5 times Beating, 3 times Berlese, 3 times Sweeping, ...

Elevations: collected from 10 - 1400 meters, 515 meters average

Collect Date Range: collected between 1980-08-28 00:00:00.0 and 2020-02-15 00:00:00.0

Type specimens: Not Provided: casent0283238; paratype Pheidole psilogaster: jtlc000016500

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