Current View: All Antweb
Change View
Cite this page

Citing AntWeb


To cite this page, please use the following:

· For print:      Citation: AntWeb. Version 8.86.1. California Academy of Science, online at Accessed .

· For web:

Species: Pheidole arachnion   Wilson, 2003 

Download Data

Current Valid Name:

Taxonomic History (provided by Barry Bolton, 2023)

Pheidole arachnion Wilson, 2003a: 656, figs. (s.w.) COSTA RICA. Neotropic. Primary type information: Primary type material: holotype major worker. Primary type locality: Costa Rica: Cartago, Rio Reventazon, 3-5 km. E Turrialba (W.L. Brown). Primary type depository: MCZC. Secondary type information: Secondary type material: 1 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

Senior synonym of Pheidole iracunda: Longino, 2009 PDF: 13
// Distribution


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

Distribution Notes:

Costa Rica: Atlantic lowlands.


Natural History:

Inhabits lowland rainforest; nests in dead wood on ground.

Taxonomic Treatment (provided by Plazi)

Scientific Name Status Publication Pages ModsID GoogleMaps
Pheidole arachnion   Longino, J. T., 2009, Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae)., Zootaxa 2181, pp. 1-90: 13, (download) 13 22820
Pheidole arachnion new species  Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press: 656, (download) 656 20017

Specimen Habitat Summary

Found most commonly in these habitats: 33 times found in montane wet forest, 21 times found in mature wet forest, 10 times found in cloud forest, primary, along steep ridge near peak, 3 times found in premontane rainforest, 11 times found in ridgetop cloud forest, isolated peak with oak trees, 5 times found in wet forest, 10 times found in ridgetop cloud forest, 7 times found in cloud forest, primary, near ridgetop, 7 times found in mature rainforest, edge of forest near pasture and agricultural land, steep rocky terrain, 5 times found in lowland rainforest, ...

Found most commonly in these microhabitats: 83 times ex sifted leaf litter, 20 times at bait, 12 times Hojarasca, 5 times sifted litter, 1 times twig nest in litter, 1 times log nest, 2 times Ex sifted leaf litter., 1 times nest in small rotting branch on ground, 1 times nest in rotting branch, 1 times cosas suspendidas, 1 times bajo de M/08, ...

Collected most commonly using these methods: 63 times miniWinkler, 19 times baiting, 13 times maxiWinkler, 15 times Winkler, 4 times search, 10 times Mini Winkler, 1 times Search & Berles, 1 times bait, 3 times Berlese, 1 times flight intercept trap, 1 times Unknown, ...

Elevations: collected from 10 - 1140 meters, 697 meters average

Collect Date Range: collected between 1973-01-18 00:00:00.0 and 2020-01-19 00:00:00.0

Type specimens: Holotype major worker Pheidole arachnion: mcztype-34144; Holotype major worker Pheidole iracunda: mcztype-34245; paratype Pheidole iracunda: jtlc000016415

See something amiss? Send us an email.
Log In to see maps.