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Species: Pheidole psilogaster   Wilson, 2003 

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Taxonomic History (provided by Barry Bolton, 2017)

Pheidole psilogaster Wilson, 2003A: 341, figs. (s.w.) MEXICO. AntCat AntWiki HOL

Taxonomic history

See also: Longino, 2009 PDF: 66.


Neotropical Region: Alajuela, Cartago, Chiapas, Costa Rica, Gracias a Dios, Guatemala, Heredia, Honduras, Jinotega, Limón, Nicaragua, Puntarenas, Región Autónoma del Atlántico Norte, Veracruz, Zacapa

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, 38 times found in tropical rainforest, 29 times found in mature wet forest, 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, 6 times found in 2º wet forest, 5 times found in tropical rainforest, some big trees, ...

Found most commonly in these microhabitats: 151 times at bait, 46 times ex sifted leaf litter, 2 times Primary forest, 4 times Hojarasca, 5 times beating vegetation, 2 times forest litter, 3 times sifted litter, 1 times nest in dead Piper stem, 3 times Sobre Vegetacion, 1 times Primary, 1 times extrafloral nectaries, ...

Collected most commonly using these methods: 151 times Baiting, 30 times miniWinkler, 11 times Winkler, 12 times MaxiWinkler, 3 times Lure/Bait, 5 times Beating, 3 times Berlese, 5 times Malaise, 2 times search, 3 times Sweeping, 1 times efn, ...

Elevations: collected from 10 - 1400 meters, 509 meters average

Type specimens: paratype Pheidole psilogaster: jtlc000016500

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