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Species: Octostruma betschi   Perrault, 1988 

Download Data

Taxonomic History (provided by Barry Bolton, 2019)

Octostruma betschi Perrault, 1988c PDF: 303, 2 figs (w.q.) FRENCH GUIANA. Neotropic. AntCat AntWiki HOL

Taxonomic history

See also: Longino, 2013 PDF :23.


A cryptic inhabitant of forest floor leaf litter and rotten wood; lowland Amazonian rainforest.


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Bolivia, Brazil, French Guiana, Guyana, Peru, Suriname
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:

Amazonian Brazil and Peru, French Guiana.


The combination of O. balzani-group mandibles, two pairs of setae on the promesonotum, and flattened setae on the scape uniquely characterize this distinctive species. New measurements for the worker are HW 0.51–0.57, HL 0.47–0.53, CI 106–108 (n=4). The queen is reported with measurements HW 0.58, HL 0.55, CI 105 (Perrault, 1988).

Specimen Habitat Summary

Found most commonly in these habitats: 31 times found in forest, 13 times found in Bamboo forest, 13 times found in 1° forest, 10 times found in clearing in secondary forest, 5 times found in Mixed terra firme forest, 3 times found in wet forest, 2 times found in rainforest, 1 times found in 1°(?) forest in sandy soil, 1 times found in Plateau, 1 times found in rain forest, ...

Found most commonly in these microhabitats: 45 times leaf litter, 18 times ex sifted leaf litter, 10 times sifted litter, 3 times ex sifted litter, 2 times rotten wood, 1 times sifted litter (leaf mold, rotten wood), 1 times near creek.

Collected most commonly using these methods: 43 times Winkler sample, 31 times winkler, 4 times litter sample, 1 times berlese, 1 times Winkler48h.

Elevations: collected from 15 - 1032 meters, 304 meters average

Type specimens: paratype of Octostruma betschi: casent0915363

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