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Species: Trachymyrmex isthmicus   Santschi, 1931 


Classification:
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See Also:

Trachymyrmex isthmicus_cf

Taxonomic History (provided by Barry Bolton, 2017)

Trachymyrmex isthmicus Santschi, 1931d PDF: 280, figs. 13-15 (w.) PANAMA. Neotropic. AntCat AntWiki HOL

Taxonomic history

Distribution:


Neotropical Region: Alajuela, Americas, Central America, Colón, Costa Rica, Ecuador, Gracias a Dios, Heredia, Honduras, Limón, Matagalpa, Nicaragua, Panama, South America

Distribution Notes:

Ecuador, Colombia, Panama (type locality), Costa Rica. Costa Rica: Atlantic lowlands.

Biology:

Taxonomy:

Trachymyrmex isthmicus Santschi 1931:280-281, figs 13-15.

Natural History:

Weber (1941) observed a nest of the species on Barro Colorado, Panama. He described the nest entrance as a small turret, and he reported on a nest relocation.

I know this species only from the La Selva Biological Station and vicinity in the Atlantic lowlands. I found one nest in the soil at the edge of the CEN trail. The nest was a single chamber, about 10cm deep and about 5cm in diameter. A fungus garden filled the chamber and there was a single colony queen. The species has also been collected at honey/manteca baits and as isolated workers in Winkler samples.

Notes:

The species is fully described in MayhŽ-Nunez and Brand‹o (2007).

References:

MayhŽ-Nunes, A. J., and C. R. F. Brand‹o. 2007. Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The jamaicensis group (Hymenoptera: Formicidae). Zootaxa 1444:1-21.

Santschi, F. 1931. Fourmis de Cuba et de Panama. Revista de Entomologia (Rio de Janeiro) 1:265-282.

Weber, N. A. 1941. The biology of the fungus-growing ants. Part VII. The Barro Colorado Island, Canal Zone, species. Revista de Entomologia (Rio de Janeiro) 12:93-130.

Taxonomic Treatment (provided by Plazi)

Scientific Name Status Publication Pages ModsID GoogleMaps
Trachymyrmex   Mayhé-Nunes, A. J. & Brandão, C. R. F., 2007, Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)., Zootaxa 1444, pp. 1-21: 3, (download) 3 21824
Trachymyrmex isthmicus   Mayhé-Nunes, A. J. & Brandão, C. R. F., 2007, Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)., Zootaxa 1444, pp. 1-21: 8-11, (download) 8-11 21824 GoogleMaps

Specimen Habitat Summary

Found most commonly in these habitats: 10 times found in tropical rainforest, some big trees, 6 times found in tropical wet forest, 7 times found in tropical rainforest, old second growth, 4 times found in mature wet forest, 1 times found in CCL 450, 1 times found in lowland rainforest, 1 times found in montane wet forest, 1 times found in SHO 650 m., 1 times found in SJ 2300, 1 times found in SSA 3400, ...

Found most commonly in these microhabitats: 22 times at bait, 7 times ex sifted leaf litter, 5 times Primary forest, 3 times Hojarasca, 1 times nest in soil, 1 times Primary, 1 times beating veg., 1 times All ants from Louisa Stark (OTS 89-1 student) study; litter and ground-nesting a.

Collected most commonly using these methods: 22 times baiting, 6 times Lure/Bait, 6 times miniWinkler, 4 times search, 2 times Winkler, 1 times beating, 1 times maxiWinkler, 1 times Mini Winkler.

Elevations: collected from 50 - 840 meters, 226 meters average

Type specimens: Paratype: fmnhins0000046966; syntype of Trachymyrmex isthmicus: casent0912522



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