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Species: Pyramica probatrix   (Brown, 1964) 

   (Not a Valid Name)
Classification:
Download Data

Current Valid Name:

Strumigenys probatrix

Taxonomic History (provided by Barry Bolton, 2017)

Smithistruma probatrix Brown, 1964a PDF: 186, pl. 16, fig. 3 (w.) MEXICO. AntCat AntWiki HOL

Distribution Notes:

Full Range: Mexico, Costa Rica, Panama.

Costa Rican Range: Atlantic lowlands (Hitoy Cerere Biological Reserve, La Selva Biological Station), Cordillera de Talamanca (Monteverde), Cordillera Volcanica Central (Zona Protectora at 1070m elevation).

Biology:

Original Description:

Smithistruma probatrix Brown 1964:186, pl. 16, fig. 3. Holotype worker: Mexico, Chiapas, Ocosingo, 25.vi.1950, Berlese funnel sample (C. & M. Goodnight & L. J. Stannard) [MCZ].

Later moved to 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 wet forest habitats. I collected the species from Winkler samples of forest floor leaf litter in Monteverde and Hitoy Cerere. Uli Wagner collected a dealate queen in her study of forest floor litter fauna of La Selva Biological Station. At 1070m in the Zona Protectora of Braulio Carrillo National Park, a cloud forest habitat, I found an interesting co-occurrence of this and two other ant species. I looked beneath an epiphyte mat in a treefall, and found what appeared to be two contiguous nests, one of Cyphomyrmex salvini complex, and one of Strumigenys nevermanni. The disturbance to the epiphyte mat had jumbled them together, and I collected a series of both species into a vial. Upon examining the vial later, I discovered three workers of P. probatrix in addition to more abundant workers of Cyphomyrmex and Strumigenys. Could this indicate something special about the nesting habits of probatrix?

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. 1964. The ant genus Smithistruma: a first supplement to the World revision (Hymenoptera: Formicidae). Trans. Am. Entomol. Soc. 89:183-200.



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