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Taxonomic History (provided by Barry Bolton, 2017)

Distribution:

(based on species list records)
Neotropical Region: Alajuela, Americas, Cartago, Central America, Chiapas, Chocó, Colombia, Comayagua, Cortés, Costa Rica, Heredia, Honduras, Jinotega, Limón, Matagalpa, Mexico, Nicaragua, Olancho, Panama, Puntarenas, San José, South America

Distribution Notes:

Full Range: Mexico to Colombia.

Costa Rican Range: Atlantic slope from sea level to 1600m.

Biology:

Members of the genus are all predaceous, with a static pressure mode of attack (Bolton 1999).

This species occurs in mature wet forest habitats. Workers are found in leaf litter on the forest floor. Most collections are from Winkler samples of sifted leaf litter, but one collection is of two workers in a rotten stick in the leaf litter.

Comments:

Holotype: Rio Toro Amarillo vic. Guapiles, 26 Feb. - 9 Mar. 1966 (W. L. Brown) [MCZC].

Longino, 21 Oct 2013: With respect to DNA barcoding, Strumigenys microthrix, stauroma, and cassicuspis all cluster together. Strumigenys stauroma forms one cluster. Strumigenys cassicuspis forms two sister clusters: Atlantic lowlands of Nicaragua and Honduras, versus elsewhere in Honduras. Strumigenys microthrix forms two non-sister clusters: Honduras and Nicaragua.

References:

Bolton, B. 1999. Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). J. Nat. Hist. 33:1639-1689.

Bolton, B. 2000. The ant tribe Dacetini, with a revision of the Strumigenys species of the Malagasy Region by Brian L. Fisher, and a revision of the Austral epopostrumiform genera by Steven O. Shattuck. Memoirs of the American Entomological Institute 65:1-1028.

Kempf, W. W. 1975 ("1974"). Report on Neotropical Dacetine ant studies (Hymenoptera: Formicidae). Rev. Bras. Biol. 34:411-424.

Specimen Habitat Summary

Found most commonly in these habitats: 13 times found in cloud forest, 14 times found in montane wet forest, 10 times found in mature wet forest, 5 times found in mesophil forest, 2 times found in SSA, 6 times found in wet forest, 1 times found in ridgetop cloud forest, 4 times found in cloud forest edge, near dairy farm pasture, some big trees in rocky areas, probably disturbed primary or old second growth, on a steep slope, 1 times found in ridgetop cloud forest, isolated peak with oak trees, 2 times found in cloud forest at bottom of steep slope, bordering rocky river, old 2nd growth veg., ...

Found most commonly in these microhabitats: 54 times ex sifted leaf litter, 14 times hojarasca, 5 times ex sifted leaf litter on ground, 2 times ex sifted leaf litter from canopy, 1 times Cloud forest, ex sifted leaf litter. Reserve, near junction of El Valle and Torr, 1 times litter/soil core, 1 times Hojarasca, bosque, 1 times ex sifted litter from forest floor, 1 times Camino toma de Agua, 1 times A lo largo quebrada derrumbe., 1 times Wet forest. Ex sifted leaf litter. Ridge just above La Cantarana. Km16 of Hartsh, ...

Collected most commonly using these methods: 32 times MiniWinkler, 24 times Winkler, 15 times MaxiWinkler, 9 times Mini Winkler, 4 times Berlese, 1 times Search & Berles, 1 times Transecto Tatamá.

Elevations: collected from 40 - 2160 meters, 969 meters average

Type specimens:

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