Current View: All Antweb
Change View
Cite this page

Citing AntWeb


To cite this page, please use the following:

· For print:      Citation: AntWeb. Version 8.41. California Academy of Science, online at Accessed .

· For web:

Species: Octostruma pexidorsum   Longino, 2013 

Download Data

Taxonomic History (provided by Barry Bolton, 2020)

Octostruma pexidorsum Longino, 2013b PDF: 47, figs 1I, 34, 44 (w.) COLOMBIA. Neotropic. AntCat AntWiki


A cryptic inhabitant of forest floor leaf litter and rotten wood; known from one lowland rainforest site in Amazonian Colombia. // Distribution


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

Distribution Notes:



The type series is from lowland Amazonian rainforest, in a Berlese sample of forest floor litter.


Face lacking transverse arcuate carina; basal five teeth of mandible acute; labrum longer than wide, sides nearly parallel, apex bluntly rounded, not bilobed; face densely punctate; ground pilosity of face, dorsal promesonotum, and first gastral tergite conspicuous, composed of thin, yellow, suberect and strongly curved setae, giving dorsum a scruffy or wooly appearance; pair of long filiform setae projecting from petiolar peduncle anterior to spiracle, shorter filiform setae projecting from sides of postpetiole and anteromedian first gastral sternite (these filiform setae otherwise only known in O. iheringi).


The name refers to the wooly ground pilosity.

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in forest.

Found most commonly in these microhabitats: 1 times leaf litter.

Collected most commonly using these methods: 1 times berlese.

Elevations: collected at 75 m

Collect Date Range: collected on 1972-02-10

Type specimens: holotype Octostruma pexidorsum Longino 2013: mcz-ent00511319; paratype Octostruma pexidorsum Longino 2013: mcz-ent00511314, mcz-ent00511315, mcz-ent00511316, mcz-ent00511317, mcz-ent00511318, mcz-ent00511320, mcz-ent00511321, mcz-ent00511322

See something amiss? Send us an email.