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Arboreal in mid-elevation rainforest; nests in dead stems.
Pheidole caulicolaHNS new species
Etymology L caulicolaHNS, stem-dwelling, alluding to the nest site.
diagnosis A medium-sized yellow species with cornulate humerus in both major and minor.
Close to arhuacaHNS, but with more prominent humeri, shorter antennal scapes, and narrower, rounder postpetiolar node in both castes as well as smooth central pronotal dorsum in the major.
See also the somewhat less similar saganaHNS, and further removed, chalcaHNS, chalcoidesHNS, mincanaHNS, schmalziHNS, and tragicaHNS.
Measurements (mm) Holotype major: HW 0.74, HL 0.80, SL 0.40, EL 0.08, PW 0.42.
Paratype minor: HW 0.44, HL 0.50, SL 0.40, EL 0.06, PW 0.30.
color Major: concolorous medium yellow.
Minor: concolorous dark yellow.
Range Costa Rica, 500-600 m.
BIOLOGY "Braulio Carrillo National Park (500 m): mature wet forest. Canopy of Licania sp. Colony in dead stick. Rara Avis: fresh treefall in primary forest. In 4-mm-diameter dead stick." (J. T. Longino 1997.)
Figure Upper: holotype, major. Lower: paratype, minor. COSTA RICA: 17 km south of Puerto Viejo, Heredia Province, 10AÃ‚Â° 18x4 84AÃ‚Â°02W, 600 m (J. T. Longino). Scale bars = 1 mm.
Found most commonly in these habitats: 1 times found in primary wet forest, 1 times found in wet forest.
Found most commonly in these microhabitats: 1 times in dead stick in fresh treefall, 1 times in dead stem in canopy of Licania.
Elevations: collected from 500 - 700 meters, 675 meters average
Collect Date Range: collected between 1924-07-29 00:00:00.0 and 1985-09-11 00:00:00.0
Type specimens: holotype major Pheidole caulicola: inbiocri001282237; paratype Pheidole caulicola: casent0624249, casent0624250, inbiocri001282236, inbiocri002279846