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noun
moth
1. moth
A nocturnal insect related to butterflies, typically with duller coloring and feathery antennae, attracted to light.
()(ひかり)(あつ)まってくる。
Moths gather around the light.
()んで()()(なつ)(むし)
A summer insect flying into the fire. (Idiom: Bringing disaster upon oneself)
Often refers to moths' attraction to flames
()夜行性(やこうせい)昆虫(こんちゅう)です。
Moths are nocturnal insects.
(よる)(まど)()けていたら、部屋(へや)(なか)(おお)きな()(はい)ってきた。
When I left the window open at night, a large moth came into the room.
()(ちょう)()ているけれど、(おお)くの()(よる)活動(かつどう)する(てん)(ちが)います。
Moths look similar to butterflies, but many moths are different in that they are active at night.

Differences from butterflies ((ちょう)):

  • Active at night (夜行性(やこうせい))
  • Feathery antennae (触角(しょっかく)羽毛状(うもうじょう))
  • Usually duller colors
  • Rest with wings flat

Common types in Japan:

  • ヤママユガ (Japanese silk moth)
  • オオミズアオ (luna moth)
  • カイコガ (silkworm moth)
  • スズメガ (hawk moths)

The proverb 「()んで()()(なつ)(むし)」 describes someone recklessly rushing into danger, like a moth to a flame.

Related:

  • (かいこ) (silkworm) - the larva of カイコガ, historically important for silk production
  • 毛虫(けむし) (caterpillar) - moth/butterfly larva

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