Usutabiga - Thin Tabiga

Japanese: ウスタビガ - うすたびが
Usutabiga - Thin Tabiga

A large moth belonging to the order Lepidoptera and the family Saturniidae. It is a large species with a wing span of 70 to 100 mm. Both the front and back wings have large transparent patterns, and the base color of the male is reddish brown, while the female is yellow. The male's wings are longer and thinner, and the top of the forewings protrudes. The larvae hatch in spring and feed on beech plants such as Quercus acutissima and Quercus serrata, as well as the leaves of cherry and zelkova trees. They mature and make cocoons in June, in which they pupate. The cocoons are green and shaped like a horse mackerel, and hang from twigs by a long stalk, so they are commonly called Yamakamasu or Tsurikamasu. The color of the cocoon does not change much, so in winter, after the leaves have fallen, the cocoons of the larvae's shells are noticeable. The adults emerge in late autumn and often fly to lights. The females lay eggs in the cocoons or on nearby branches. They overwinter as eggs. They are widely distributed throughout mainland Japan, living in plains and mountains.

[Hiroshi Inoue]

Ustaviga
A large species found widely distributed from the plains to the mountains of mainland Japan. Both the front and back wings have large transparent patterns, and the base color of the male is reddish brown, while the female is yellow. Wing span 70-100mm. Saturniidae ©Shogakukan Photo by Okuyama Hisashi ">

Ustaviga


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

昆虫綱鱗翅(りんし)目ヤママユガ科に属するガ。はねの開張70~100ミリメートルの大形種。前後翅とも大きな透明紋があり、雄の地色は赤褐色であるが、雌は黄色。はねの形は雄のほうが細長く、前ばねの頂部が突出している。春に孵化(ふか)した幼虫は、クヌギ、コナラなどのブナ科植物のほか、サクラやケヤキなどの葉を食べ、6月ごろ老熟して繭をつくり、その中で蛹化(ようか)する。繭は緑色のかます形で、長い柄(え)で小枝などにぶら下がっているので、ヤマカマス、ツリカマスと俗称されている。繭の色はあまり変色しないので、冬期、落葉後に幼虫の抜け殻の繭が目だつ。成虫は晩秋に羽化し、よく灯火に飛来する。雌は繭あるいは付近の枝などに産卵。卵で越冬する。日本本土に広く分布し、平地から山地に生息する。

[井上 寛]

ウスタビガ
日本本土の平地から山地に広く分布する大形種。前後翅とも大きな透明紋があり、雄の地色は赤褐色、雌は黄色。はねの開張70~100mm。ヤママユガ科©Shogakukan 撮影/おくやまひさし">

ウスタビガ


出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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