Arctiidae

...Adults have pure white bodies and wings, black stripes on the back of the abdomen, and red sides. The Arctiidae family is a large family that includes both large and small species, with about 10,000 species known worldwide and about 100 known in Japan. Many of the adults are very brightly colored, such as white, red, or yellow, and perhaps because their body fluids are bitter, insectivorous birds and animals are reluctant to eat them.

*Some of the terminology that mentions "Arctiidae" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…成虫は体翅とも純白で，腹部背面に黒紋を連ね，側面が赤い。　ヒトリガ科Arctiidaeは，大型から小型種を含む大きな科で，世界に約1万種，日本には100種あまり知られている。成虫は白色，赤色，黄色などたいへんはでな色彩のものが多く，体液がにがいためか，食虫性の鳥獣が敬遠してあまり捕食しない。…

※「Arctiidae」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報