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Species: Apterostigma auriculatum   Wheeler, 1925 


Classification:
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See Also:

Apterostigma auriculatum_cf

Taxonomic History (provided by Barry Bolton, 2017)

Apterostigma auriculatum Wheeler, 1925a: 49 (w.q.) TRINIDAD. Neotropic. AntCat AntWiki HOL

Taxonomic history

Senior synonym of Apterostigma demerarae, Apterostigma immobile: Weber, 1958d PDF: 243; of Apterostigma billi, Apterostigma icta, Apterostigma petiolatum: Lattke, 1997 PDF: 139.

Distribution:


Neotropical Region: Americas, Bolivia, Brazil, Caribbean, Central America, Colombia, Colón, Costa Caribe Sur, Costa Rica, Ecuador, El Beni, French Guiana, Gracias a Dios, Guyana, Heredia, Honduras, Limón, Mato Grosso do Sul, Nicaragua, Panama, Peru, South America, Suriname, Trinidad and Tobago, Venezuela

Distribution Notes:

Bolivia, Brazil, Ecuador, Guyana, Trinidad (type locality), Venezuela, Panama, Costa Rica. Costa Rica: Atlantic lowlands.

Biology:

Natural History:

Apterostigma auriculatum is widespread in South America (Lattke 1997) and appears to reach its northern limit in Costa Rica. I know this species from two Costa Rican localities: La Selva Biological Station and Hitoy Cerere Biological Reserve. Both are lowland rainforest sites, about 100m elevation. At Hitoy Cerere, I found a dealate queen while collecting at night. At La Selva, Ted Schultz found a colony (#290692-01) between leaves in leaf litter on the forest floor. The fungus nest was a sponge cake-like disc between the leaves, with no envelope. In a baiting study at La Selva, Nichole Barger collected workers at a honey/crisco bait.

It is curious that this species has not been collected in Winkler samples of sifted leaf litter, in spite of intensive sampling effort at La Selva and elsewhere in Costa Rica.

Notes:

I formerly called this morphospecies JTL-016.

References:

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

Specimen Habitat Summary

Found most commonly in these habitats: 14 times found in mature wet forest, 4 times found in 2º lowland rainforest, 2 times found in tropical rainforest, 3 times found in lowland rainforest, 1 times found in wet forest, 1 times found in tropical moist forest, 1 times found in tropical rainforest, with some big trees, probably a mix of primary and secondary forest, 1 times found in CCL 550, 1 times found in mature and second growth wet forest.

Found most commonly in these microhabitats: 20 times ex sifted leaf litter, 2 times at bait, 1 times Primary forest, 1 times nocturnal strays, 1 times nest between leaves in leaflitter, 1 times ground forager(s).

Collected most commonly using these methods: 17 times MiniWinkler, 2 times baiting, 2 times MaxiWinkler, 2 times Mini Winkler, 2 times Search, 1 times Winkler, 1 times Lure/Bait.

Elevations: collected from 30 - 300 meters, 97 meters average

Type specimens: syntype of Apterostigma immobile: casent0905912



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