Latin Name: Atta sexdens. Trivialname: Leafcutterant. Taxonomy: Subfamily: Myrmicinae Tribe: Attini. Keeping Level: (3) through their large Space- and. Atta sexdens, along with A. cephalotes, is the most widespread member of its genus. Its northern most range is Mexico, and extends through Central America. Atta sexdens: leafcutter ant: cubic feet), a colony of A. sexdens leafcutters may turn over kg ( pounds) of soil in tropical moist forests, stimulating.

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Mated queens may contain more that million sperm when all the mating is done.

Colonies of Atta sexdens have a success rate of approximately 2. The one exception to this rule is the first few sexdeens of eggs laid by a founding queen, as she has no workers to take care of the larvae and must take care of them herself.

This page was last edited on 5 Septemberat The two basic types of chambers are fungus farms and waste chambers.

Atta sexdens – Wikipedia

At the top of the mound are structures resembling sand castles surrounding hundreds of openings to the colony. Senior synonym of Atta sexdentata: The farms contain the fungal culture which sustains the colony and hosts larvae and pupae.

All female eggs are identical when laid. Check data from AntWeb. In fact, Atta ants are considered the primary herbivorous pest in many areas where they are found. The 4 Mesonotal zaehne short, the front conical. Fowler and Robinson, ; Wilson and Holldobler, ; Wilson, The females have sexdens schwarzbrauntn Gaster, from the bright-red capiguara Gaster.


A pest risk assessment of unprocessed Eucalyptus concluded the introduction of South American Atta species into the United States was a low probability Kliejunas et al. The fungus produces special structures, called gongylidiawhich have evolved to be eaten by ants.

Referring to a mating system in which a female mates with several males during one breeding season compare polygynous. Create Account Forgot Password? The most important factor is the quantity of food.

Eye tooth keels obsolete. A mature colony contains 5—8 million workers. From Wikipedia, the free encyclopedia. Threat of introduction A niche modeling analysis determined that temperature seasonality was the most important variable for predicting its current distribution, while precipitation seasonality was the least important Solomon, We argue that the excavation of deep founding nests in A. On the contrary, only the most advanced ant societies can expend such lavish care to their offspring as required by Atta larvae.

Occipital spines just zieml. Foraging expeditions are hazardous, so are handled by older, thus more expendable, members of the caste. Stipes slender and pointed, as long as the associate volume, apical membrane with a narrow hairy. Thoracic spines pointed, shorter than the front mesonotal spines epinotal spines. The movement of leaves and waste and the construction of new canals by colonies of A. The speed at which they do this is equivalent, in human terms, of running a four-minute mile with a kilogram weight strapped to their back.

The four castes of A. Soldiers usually appear when the colony has a population of aboutThe queen retains the sperm in a special organ for the rest of her life. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico. The third caste, Forager-Excavators, find food sources, lay trails to them, cut and retrieve vegetation, and also excavate the nest, making new chambers or recovering old ones that may have collapsed.


Atta sexdens

Their pupae are cocoonless, as are all of the subfamily Myrmicinae. Head, thorax and pedicel thick and long woolly hair, the legs on the ventral side. They live in a symbiotic relationship with a fungus belonging to the subphylum Basidiomycota. After more weeks, the pupae hatch into adult workers, ready to serve the queen and colony. Also, the females and males.

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ADW: Atta sexdens: INFORMATION

Forehead sexdsns the middle with Laengsrunzeln. A fully formed colony can contain anywhere from 5 to 8 million individual ants. The diameter of the colony may reach 10 m with a depth of 6 m. See How to Cite AntWeb. Wilson and Holldobler, ; Wilson, After finding a suitable spot to build her nest and colony, the queen burrows into the ground and creates her first chamber, where she lays her first set of eggs and places the fragment of the fungus garden that she took from her old colony.

The first eggs to hatch are gardener-nurses, who take care atga the fungus gardens.