Indri - Indori (English spelling) indri

It is an animal of the Indriidae family in the Primates order of the Mammalia class. It is a single species of prosimian in one genus. It is endemic to the island of Madagascar, and lives in the rainforests of the eastern part of the island. It is the largest of all prosimians, with a head and body length of over 60 centimetres. It resembles the sifaka of the same family, but its tail is only about 3 centimetres long and its muzzle is long. It is covered in dense silky hair with a mottled pattern of black-brown and grey-white, although the colour scheme of different parts of its body varies from individual to individual. Its hind legs are large and longer than its forelimbs, with the first digits being opposable. Its dentition is

They have 30 teeth. They have air sacs in the larynx. They are diurnal, live in family groups, and have territories. Their staple food is leaves, but they also eat flowers and fruit. They are arboreal, clinging to trunks with their body axis held vertically, and use the springiness of their hind legs to jump from trunk to trunk. They have a clear, eerie voice.

[Shigeo Uehara]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

哺乳(ほにゅう)綱霊長目インドリ科の動物。1属1種の原猿。マダガスカル島の固有種で、東部の多雨林にすむ。原猿のなかでもっとも大きく、頭胴長60センチメートル以上にも達する。同科のシファカに似るが、尾が約3センチメートルしかなく、鼻口部が長い。絹毛が密生し、黒褐色と灰白色のまだら模様であるが、部位ごとの配色には個体差がある。後肢は大きくて前肢より長く、第1指に対向性がある。歯式は

で30本。喉頭(こうとう)部に気嚢(きのう)がある。昼行性で家族的な群れをつくり、縄張りがある。主食は葉で、花や果実も食べる。樹上性で体軸を垂直に保った姿勢で幹にしがみつき、後肢のばねを利用して幹から幹へ跳び移る。よく通る不気味な声を発する。

［上原重男］

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