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Species of ant From Wikipedia, the free encyclopedia
Atta colombica is one of 47 species of leafcutter ants. This species is part of the Attini tribe (the fungus-growing ants).
Atta colombica | |
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Atta colombica carrying a leaf segment | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Formicidae |
Subfamily: | Myrmicinae |
Genus: | Atta |
Species: | A. colombica |
Binomial name | |
Atta colombica (Guérin-Méneville, 1844)[1] | |
Workers of this species are maroon in colour, and are entirely matte, with no shiny spots.[1]
This species ranges from Guatemala to Colombia,[1][2] and can also be found in Costa Rica.[1]
A. colombica produces visible refuse dumps of spent fungus on the surface. These dumps often take the form of large, conical mounds, and are located to the side of the main soil mounds. Lines of workers carry the spent fungus from the nest to the dumps. They deposit the grayish-white pellets at the peak of the mounds, which produces the conical shape. This behaviour is different from A. cephalotes, which deposit their refuse in subterranean dumps.[1]
The number of workers in a colony is estimated to be 1.0-2.5 million.[3]
A colony of A. colombica harvests, on average, 85–470 kg (187–1,036 lb) of plant biomass per year (dry weight), meaning they harvest a leaf area of about 835–4,550 m2 (8,990–48,980 sq ft) annually.[4][5][6]
The average number of different active males in each colony is believed to be less than three. Due to the variation of shared paternity, though, colonies effectively contain two fathers.[7]
Unlike the majority of Atta spp., that respond to colony threats from other ants with many small worker ants, A. colombica appears to recruit majors, or soldiers, for defense.[8]
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