ATTA SEXDENS PDF

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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Atta sexdensalong with A. The species has a wider tolerance for nest habitats, and is found in closed-canopy-forest, open grassland and disturbed habitats Solomon, ; Weber, Atta sexdens is a considered a serious pest throughout its range, causing damage to a wide variety of agricultural crops and ornamentals Cherrett, 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, The modeling also predicts A.

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. Workers vary in shape, color, sculpture and pubescence Borgmeier, Among intercepted attines, the species is most readily confused with A.

Among other attines, A.

Herzfoermig head, posterior margin strongly bulged. Head width 5 mm, length without mandibles, 4, 2 mm. Rudimentarily ocelli, sometimes absent. Vertex laterally without tooth, sometimes with tubercles. Fascias short, with teeth. Eye keels curved inward above, below with a short tooth, also with short ventral tooth.

Scape 3, 4 mm.

Mandibles with blunt teeth. Thorax length 5, 4 mm. Lower Pronotal zahn strong, slightly curved. The 4 Mesonotal zaehne short, the front conical.

Atta sexdens | ant |

Epinotal spines judged longer than the Mesonotal zaehne, but shorter than their mutual distance at the base, straight back.

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Postpetiole keeled, width 1, 3 mm, length 0, 8 mm. Gaster width 3 mm, 5 mm hind tibiae. Mandibles, clypeus and scape shiny.

Body dull, densely finely punctate, forehead wrinkled in the middle of something. Protruding hair quite short, in the middle of the forehead, occiput and sides of the head scattered, abundant on the thorax, and gaster Sielchen. Pubescence on sparse, abundant pronotum. Reddish brown to dark reddish brown stain. Head width 3 mm. Vertex with very short lateral tooth. Occipital spines just zieml.

Thoracic spines pointed, shorter than the front mesonotal spines epinotal spines. Forehead in the middle with Laengsrunzeln. Long hair on the head and gaster, shorter thorax, scattered pubescence. Length 2, 2 mm. Hairs on thorax sparse, longer on head and gaster. Wei b c hen Paramaribo. Head width 5 mm, sides converging towards the front, rear edge bulges gently. Occipital zaehne short side vertex with weak swelling or TuberkeI.

Eye tooth keels obsolete. Mandibles long, with pointed Apikalzahn and 8 blunt teeth.

Atta sexdens – AntWiki

Thorax length 8, 5 mm. Scutellum without a furrow. Epinotum over the base of the short teeth, with swelling.

Petiole and blunt postpetiole side with teeth or cusps. Gaster width 7, 5 mm. Front corners poorly marked. Hind tibiae 5 mm. Mandibles, clypeus, scape and legs shiny. Prominent short hairs scattered on head, thorax and gaster more abundant.

Legs covered with short oblique. Rusty brown color, blacked Gaster. Occipital zaehne short and pointed. Mandibles narrow and sexdene, with Apikalzahn and 7 weak teeth.

Thorax length 5, 75 mm. Gaster width of 5, 4 mm. Tibie III, 4, 6 mm. Stipes slender and pointed, as long as the associate volume, apical membrane with a narrow hairy. Volsellen triangular, slightly curved inwards, tapering apically. Sagittae with strong vertically erect chitinisierten sides, in profile triangular, upper margin bulged.

Head, thorax and pedicel thick and long woolly hair, the legs on the ventral side. Gaster, scape pubescent, and short tracks. Stain dark brown, legs lighter. Both figures are re-examined must. In Guatemala, it may also colombica urn, and perhaps in Montevideo urn Acromyrmex sp. Proliferation zone vary the workers in paint, sculpture, gloss and hair, with some soldiers, the head is rubbed as in others he is furnished with hair, never the hair missing shots; in specimens from the south of Brazil the gaster on the sides is Zllweilen shiny the smallest workers may be the whole gaster shinyand sometimes the show occipital lobes front teeth on each side; the Epinotaldornen Zllweilen are strongly directed upwards; specimens from S.

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Catarina show sometimes blackened thorax and pedicel. The females are slightly smaller than the Paramaribo from Brazil, which varies between mm Fluegellaenge. Among the males falls on the strong variation of Sagitta, the upper edge in profile bulges sometimes deep, sometimes even d Borgm. Infig The females have sexdens schwarzbrauntn Gaster, from the bright-red capiguara Gaster. The males of both species differ sexdejs the Sagitta, which are very similar in profile, atfa in dorsal view appearing Oberraender of capiguara turned inward, and the Seitenwaende are not vertical, but more oblique.

Opaciceps of robusta and the soldiers of different sexdens by the scalp and through the smaller sexdems. The mean of sexdens workers are distinguished from robusta, and opaciceps laevigata little.

Also, the females and males. Harvard University Press, Cambridge, Mass. Department of Agriculture, Forest Service. Found most commonly in these microhabitats: Collected most commonly using these methods: Send us an email. We encourage use of AntWeb images. In print, each image must include attribution to its photographer, the specimen code of the image, and “from www.

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Atta sexdens

Global Georegions Bioregions Projects Museums. Change View Bolton World Catalog. Senior synonym of Atta sexdentata: