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Species: Strumigenys nevermanni   Brown, 1959 


Classification:
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See Also:

Strumigenys nevermanni_nr

Taxonomic History (provided by Barry Bolton, 2017)

Strumigenys nevermanni Brown, 1959a: 99 (w.q.) COSTA RICA. Neotropic. AntCat AntWiki HOL

Taxonomic history

See also: Bolton, 2000: 517.

Distribution:


Nearctic Region: North America, Texas, United States
Neotropical Region: Alajuela, Americas, Atlántida, Cartago, Central America, Costa Rica, Guanacaste, Heredia, Honduras, Limón, Mexico, Puntarenas, San José

Distribution Notes:

Costa Rica, Nicaragua, Honduras. In Costa Rica: mid-elevation Atlantic and Pacific slopes, Cordillera Volcanica Central northward.

Biology:

Brown and Wilson (1959) summarize the genus as follows:

"Widespread in tropics and warm temperate areas. Primarily forest-dwelling; some species occur in grassland and arid scrub. ... Nests mostly in soil and rotting wood; a few species live in arboreal plant cavities in tropical rain forest. Foraging hypogaeic to epigaeic-arboreal. Food: most species are collembolan feeders; a few are polyphagous predators or occasionally feed on sugary substances..."

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

In Costa Rica, nevermanni occurs in wet forest habitats. It nests and forages in the low arboreal zone and in some cases in litter on the forest floor.

Identification:

Differs from emeryi in part or all of side of propodeum foveolate; foliaceous crest beneath propodeal spines thin, concave; foliaceous crest on ventral margin of petiole thin; dorsal pilosity on gaster straight to weakly curved, never long and coachwhip-like. In contrast, emeryi has completely smooth and shining katepisternum and side of propodeum; large convex foliaceous crest beneath propodeal spines; foliaceous crest on ventral margin of petiole large, irregular; dorsal pilosity on gaster varies from straight to long, thin, coachwhip-like.

Comments:

Strumigenys emeryi and nevermanni are largely parapatric, with a zone of sympatry along the Caribbean coast of Honduras. Although similar, they fall into two DNA barcode clusters.

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.

Brown, W. L., Jr. 1959. The Neotropical species of the ant genus Strumigenys Fr. Smith: Group of emeryi Mann. Entomological News 70:97-104.

Brown, W. L., Jr. 1962. The neotropical species of the ant genus Strumigenys Fr. Smith: Synopsis and keys to the species. Psyche 69:238-267.

Brown, W. L., Jr., Wilson, E. O. 1959. The evolution of the dacetine ants. Quarterly Review of Biology 34:278-294.

Specimen Habitat Summary

Found most commonly in these habitats: 14 times found in montane wet forest, 2 times found in wet forest canopy, 3 times found in cloud forest, 2 times found in moist forest, 1 times found in 2nd growth cloud forest, 2 times found in wet forest, 1 times found in montane rainforest, 1 times found in Port of entry, 1 times found in ridgetop cloud forest, isolated peak with oak trees, 1 times found in riparian forest, cloud forest along stream, near dairy farm pasture, 2nd growth or disturbed primary, ...

Found most commonly in these microhabitats: 4 times Hojarasca, 4 times ex sifted leaf litter, 1 times epiphytic material, Goethalsia meiantha, 1 times under epiphyte mat in treefall, 3 times Malaise trap, 1 times epiphytic material, Virola koschnyi, 2 times Cerca del Refugio Cascante, strumigenys nevermanni a live shrub at e times wet forest, around Guindon cabin. 1009, 1 times under moss mat, 1 times under epiphytes, 2 times tronco podrido, ...

Collected most commonly using these methods: 8 times Berlese, 5 times search, 6 times Malaise, 4 times Mini Winkler, 2 times Winkler, 2 times maxiWinkler, 1 times miniWinkler, 1 times Pan Trap, 1 times sweep.

Elevations: collected from 50 - 1580 meters, 874 meters average

Type specimens: holotype: jtl016072



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