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Species: Pheidole rectispina   Wilson, 2003 

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Taxonomic History (provided by Barry Bolton, 2018)

Pheidole rectispina Wilson, 2003A: 495, figs. (s.w.) COSTA RICA. Neotropic. AntCat AntWiki HOL


Neotropical Region: Alajuela, Americas, Atlántida, Belize, Cartago, Central America, Chiapas, Chontales, Comayagua, Cortés, Costa Caribe Norte, Costa Rica, Darién, Francisco Morazán, Gracias a Dios, Guatemala, Heredia, Honduras, Izabal, Jinotega, Limón, Matagalpa, Mexico, Nicaragua, Nueva Segovia, Oaxaca, Olancho, Panama, Petén, Puntarenas, San José, Suchitepéquez, Veracruz

Distribution Notes:

Southern Mexico to Costa Rica. Costa Rica: Atlantic slope (La Selva, Braulio Carrillo, Penas Blancas, Monteverde).


This species inhabits mature wet forest from sea-level to lower cloud forest. It is moderately abundant in Winkler samples and at baits on the forest floor. Nests have been found in dead wood on the ground and in shallow chambers in clay soil.


Several strongly divergent DNA barcoding clusters occur, but so far no morphological correlates are known.

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press

Pheidole rectispinaHNS new species

Types Mus. Comp. Zool. Harvard.

etymology L rectispinaHNS, upright spine.

diagnosis Similar in various traits to bilimekiHNS, floridanaHNS, hazenaeHNS, rectilumaHNS, rectisentisHNS, rectitrudis, sospesHNS, and stomachosaHNS, differing as follows.

Major: propodeal spine half as long as propodeal basal face and perpendicular to it; humeri low and subangulate; mesonotal convexity present; postpetiole from above elliptical, with angulate lateral margins; all of dorsal surface of head except occipital lobes, frontal triangle, and midclypeus carinulate; all of mesosoma and most of head and waist foveolate and opaque; anterior fringe of first gastral tergite shagreened.

Minor: propodeal spine half as long as the propodeal face and vertical on it; postpetiolar node somewhat depressed; occiput broad, its margin concave; all of head and mesosoma foveolate and opaque, no rugoreticulum and almost no carinulae.

Measurements (mm) Holotype major: HW 1.00, HL 1.14, SL 0.56, EL 0.14, PW 0.50.

Paratype minor: HW 0.44, HL 0.50, SL 0.46, EL 0.08, PW 0.30.

Color Major: dark, even blackish brown.

Minor: body medium brown, appendages yellowish brown.

Range Atlantic slope of Costa Rica from lowlands to montane forest (Longino 1997); and Belize (Hummingbird Gap, near Stann; Stewart Peck).

biology Occurs on the floor of primary rainforest.

figure Upper: holotype, major. Lower: paratype, minor. COSTA RICA: La Selva Biological Station, near Puerto Viejo, Heredia (E. O. Wilson). Scale bars = 1 mm.

Specimen Habitat Summary

Found most commonly in these habitats: 210 times found in cloud forest, 89 times found in montane wet forest, 57 times found in mature wet forest, 64 times found in tropical rainforest, 23 times found in 2º lowland tropical rainforest, 28 times found in tropical wet forest, 16 times found in montane rainforest, 16 times found in ridgetop cloud forest, 13 times found in lowland rainforest, 7 times found in 2º wet forest, ...

Found most commonly in these microhabitats: 401 times ex sifted leaf litter, 138 times at bait, 46 times Hojarasca, 9 times ex sifted litter from forest floor, 6 times sifted litter, 1 times nest in soil, 1 times nest in rotten stem, 2 times Primary forest, 1 times ex sifted litter, 1 times A lo largo quebrada derrumbe., 1 times nest in duff, ...

Collected most commonly using these methods: 305 times miniWinkler, 133 times baiting, 77 times MaxiWinkler, 43 times Winkler, 42 times Mini Winkler, 20 times Berlese, 6 times bait, 3 times search, 3 times Lure/Bait, 1 times Search & Berles, 2 times Pitfall, ...

Elevations: collected from 15 - 1685 meters, 852 meters average

Type specimens: paratype Pheidole rectispina: jtlc000016509

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