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Species: Octostruma gymnosoma   Longino, 2013 

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Taxonomic History (provided by Barry Bolton, 2022)

Octostruma gymnosoma Longino, 2013b PDF: 33, figs 1B, 3B, 5M, 25, 43 (w.) MEXICO (Chiapas). Neotropic. Primary type information: Primary type material: holotype worker. Primary type locality: Mexico: Chiapas, 2 km. SE Custepec, 15.72099, -92.95054, ±200 m., 1520 m., mesophhyll forest, ex sifted leaf litter, 17.v.2008 (LLAMA WM-A-02-1). Primary type depository: CASC. Primary type specimen: JTLC000015356. Secondary type information: Secondary type material: 2 paratype workers. Secondary type locality: same as for holotype. Secondary type depositories: CFSS, JTLC. AntCat AntWiki


A cryptic inhabitant of forest floor leaf litter and rotten wood; from cloud forest of the Sierra Madre de Chiapas. // Distribution


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

Distribution Notes:

Mexico (Chiapas).


This species is known only from the three type workers, all from one Winkler sample of sifted litter and rotten wood from the forest floor. The sample was taken in mesophyll cloud forest in the Sierra Madre de Chiapas, at 1520 m elevation.


Face lacking transverse arcuate carina; basal five teeth of mandible acute; apex of labrum bilobed; face and mesosomal dorsum lacking erect setae.


This is the largest Central American species. It is very similar to the allopatric O. schusteri, from Volcán Atitlán in Guatemala. The two differ only in the presence of spatulate setae on the face of O. schusteri.

The name refers to the general lack of spatulate setae on the dorsal surfaces.

Specimen Habitat Summary

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

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

Collected most commonly using these methods: 1 times MaxiWinkler.

Elevations: collected at 1520 m

Collect Date Range: collected on 2008-05-17 00:00:00.0

Type specimens: holotype Octostruma gymnosoma Longino 2013: jtlc000015356; paratype Octostruma gymnosoma Longino 2013: casent0609703, casent0627366

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