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''Dasypus'', also known as the long-nosed or naked-tailed armadillo, is a genus of armadillo in the family Dasypodidae. It is the only genus in the subfamily Dasypodinae and is largely found in South, Central, and North America. ''Dasypus'' are solitary mammals that are primarily nocturnal to avoid temperature extremes and predation. They exist in numerous habitats ranging from brush to grassland areas and are mainly insectivorous. The most common and widespread of the ''Dasypus'' species is the nine-banded armadillo (''Dasypus novemcintus''), which is commonly used in the study of leprosy due to its unique ability to systematically contract the disease.〔 ==Description== ''Dasypus'' are primitive mammals known for their hard armor like shell, called a carapace. Their ossified dermal plates compose a series of six to eleven movable bands covered by leathery keratinous skin, which surrounds and protects the body. A thin epidermal layer separates each of the armor bands, and joints in the shell allow for flexibility. The face, neck, and underside lack a bony covering and are instead covered with small bunches of hair.〔 ''Dasypus'' species are grey or brown in color and possess long and sharp claws for scavenging and digging burrows. Although they have a very diverse range, armadillos are typically found near bodies of water, and their burrows are often dug into stream banks, tree stumps, or rock or brush piles.〔〔 When threatened, armadillos run to the nearest burrow or crevice and tightly wedge themselves inside with their back alongside the wall. If no such burrow or shelter is available, armadillos curl up in order to protect their vulnerable underside. ''Dasypus'' species are unable to roll into a complete ball like the Brazilian three-banded armadillo due their excessive number of dermal plates.〔 Because they lack significant hair covering, armadillos are particularly sensitive to climate and are therefore most active during summer nights and winter days. Due to their low fat storage, they spend most of their activity foraging for food, which primarily consists of insects, small reptiles and amphibians, and plants. Armadillos have a small, flattened skull with a long lower jaw and narrow snout. They do have small, rudimentary teeth, but lack incisors, canines, and enamel.〔 Their tongue is particularly long and sticky and is used to forage for ants and termites. They have very poor eyesight and instead rely on their keen sense of smell and enhanced hearing to locate buried insects and detect predators. Armadillos are fully capable of climbing, swimming, and jumping. ''Dasypus'' have a unique ability to build up an oxygen debt and hold their breath for up to six minutes. This allows them to cross streams and ponds underwater by simply walking or running along the bottom. If the water body is too large for this, ''Dasypus'' can instead gulp in air, inflating their stomach and intestine and increasing buoyancy. This allows them to float and more easily swim across the water.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dasypus」の詳細全文を読む スポンサード リンク
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