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Species: Pyramica nigrescens   (Wheeler, 1911) 

   (Not a Valid Name)
Classification:
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Current Valid Name:

Strumigenys nigrescens

Taxonomic History (provided by Barry Bolton, 2017)

Strumigenys alberti var. nigrescens Wheeler, 1911a PDF: 28 (w.) JAMAICA. AntCat AntWiki HOL

Distribution Notes:

Full Range: Jamaica, Cuba, Haiti, Dominican Republic, Bahamas, Mexico to Costa Rica, Trinidad.

Costa Rican Range: Guanacaste lowlands, Atlantic coast.

Biology:

Original Description:

Strumigenys alberti var. nigrescens Wheeler 1911:28. Syntype worker: Jamaica, Mandeville.

Later moved to Smithistruma, then Pyramica. See Bolton (2000) for complete synonymy.

Natural History:

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

This species occurs in coastal areas, dry forest, and disturbed habitats. My collections are from Winkler samples of sifted leaf litter. Its geographic distribution and habitat preference suggest it could be a tramp species dispersed by commerce.

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.

Wheeler, W. M. 1911. Additions to the ant-fauna of Jamaica. Bull. Am. Mus. Nat. Hist. 30:21-29.



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