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Species: Apterostigma dentigerum   Wheeler, 1925 

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Taxonomic History (provided by Barry Bolton, 2022)

Apterostigma dentigerum Wheeler, 1925a PDF: 51 (w.q.m.) COSTA RICA. Neotropic. Primary type information: Primary type material: syntype workers (number not stated, “numerous”), 1 syntype queen, 2 syntype males. Primary type locality: Costa Rica: Zent, xi.1911 (W.M. Wheeler). Primary type depositories: LACM, MCZC. AntCat AntWiki HOL

Taxonomic history

Status as species: Weber, 1958d PDF: 246; Kempf, 1972b PDF: 24; Bolton, 1995b: 74; Lattke, 1997 PDF: 151 (redescription); Fernández & Serna, 2019 PDF: 839.
// Distribution


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

Distribution Notes:

Costa Rica (type locality), Panama, Colombia, Ecuador, Brazil (AM, Mato Grosso) (Lattke 1997).


Natural History:

Apterostigma dentigerum occurs in a variety of habitats in Costa Rica, including lowland wet forest, lowland dry forest, and montane forest. I have collected specimens from La Selva Biological Station and at 300m and 500m elevations on the Barva transect in Braulio Carrillo National Park, at 800m elevation in the Pe–as Blancas Valley east of Monteverde, and at Curu Wildlife Area at the tip of the Nicoya peninsula.

Most of my collections have been nocturnal foragers on the ground. I have never collected diurnal foragers and workers are relatively rare in Winkler samples of sifted litter, most of which are taken during the day. This suggests that workers stay in well-sheltered nests during the day.

I have found nests both in and under dead wood on the ground. Also I found a nest deep among dead roots of a stilt palm. The fungus garden is a flocculent white mass, usually suspended in a cavity. There is no hyphal envelope.


Lattke, J. E. 1997. Revisi—n del gŽnero Apterostigma Mayr (Hymenoptera: Formicidae). Arq. Zool. (S‹o Paulo) 34:121-221.

Wheeler, W. M. 1925. Neotropical ants in the collections of the Royal Museum of Stockholm. Ark. Zool. 17A (8):1-55.

Specimen Habitat Summary

Found most commonly in these habitats: 68 times found in mature wet forest, 9 times found in wet forest, 7 times found in tropical wet forest, 6 times found in rainforest, 5 times found in tropical rainforest, 2 times found in disturbed tropical wet forest, 4 times found in lowland wet forest, 1 times found in 1º tropical rainforest, 2 times found in mature rainforest, 1 times found in CCL, ...

Found most commonly in these microhabitats: 79 times ex sifted leaf litter, 11 times nest in clay bank, 12 times Hojarasca, 1 times nest under wood over stream, 1 times nest under rotten log, 5 times at bait, 2 times nest in dead wood on ground, 2 times fungus nest under roots, 1 times two adjacent large nests under old board in leaflitter, 3 times nocturnal foragers, 2 times nocturnal forager, ...

Collected most commonly using these methods: 70 times MiniWinkler, 35 times search, 19 times Winkler, 5 times Pitfall, 5 times baiting, 3 times maxiWinkler, 4 times Mini Winkler, 1 times hand collecting, 1 times Malaise, 1 times Berlese.

Elevations: collected from 5 - 830 meters, 252 meters average

Collect Date Range: collected between 1985-08-14 and 2020-02-15

Type specimens:

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