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|Combination in Camponotus (Myrmorhachis): Forel, 1914a PDF: 274; in Camponotus (Myrmocladoecus): Emery, 1925d PDF: 167; Wheeler, 1933a: 63.|
Guatemala to Brazil. Costa Rica: northern Pacific lowlands (one record from Atlantic coast).
This species is a very common and conspicuous ant in the dry lowlands of northwest Costa Rica, south to Carara Biological Reserve, and as high as 900m elevation on the road to Monteverde. The bright orange workers are common diurnal foragers on low vegetation and treetrunks. They are common in xeric and synanthropic habitats. I usually find nests in dead branches and stems in low vegetation. A dry xeric ridge near Playa Naranjo in Santa Rosa National Park had many bulbous-based Tillandsia on the branches of low shrubs, and I found several C. rectangularis nests in these epiphytes. Several times I have found lone foundress queens in dead stems, suggesting monogynous claustral founding.
I have one Atlantic side collection. I was collecting along the beach margin at the Casa Verde turtle research station in Tortuguero, and I found a nest in a dead vine stem.
Emery, C. 1890. Studii sulle formiche della fauna neotropica. Bull. Soc. Entomol. Ital. 22:38-80.
[[ worker ]]. Surubres, pres San Mateo, 250 metres, cote Pacifique de Costa Rica, dans les tiges creuses de la brousse (P. Biolley).
Found most commonly in these habitats: 5 times found in roadside vegetation, 5 times found in 2º lowland rainforest, 3 times found in dry forest, 4 times found in Port of entry, 3 times found in beach, 3 times found in xeric scrub, 1 times found in tropical forest edge, 1 times found in wet forest edge, 1 times found in 2nd growth dry forest, 1 times found in Secondary forest in city park, ...
Found most commonly in these microhabitats: 6 times beating vegetation, 1 times ex dead stem, str times collecting in secondgrowth dry forest on slope adjacent to pasture. #3423-s, camponotus; times collecting in mesquite tree at beach edge in front of cabina. #3426, 1 times Beach edge vegetation. Nest in dead vine stem., 1 times sweeping vegetation, 2 times strays, 2 times on bromeliads, 2 times nest in Tilandsia, 1 times nest in dead stick, 2 times Malaise trap, ...
Collected most commonly using these methods: 6 times Beating, 3 times search, 2 times Malaise, 2 times Nest in twig above ground, 1 times sweep, 1 times Dead twig above ground, 1 times miniWinkler, 1 times miscellaneous collecting, 1 times pyrethrum/insecticide fogging.
Elevations: collected from 3 - 700 meters, 101 meters average
Type specimens: syntype of Camponotus rectangularis: casent0905527