noun
Tinea translucens; clothes moth
A specific species of clothes moth. In everyday language, often referred to simply as イガ.
イガは衣類を食べる害虫です。
The clothes moth is a pest that eats clothing.
クローゼットにイガが発生した。
Clothes moths appeared in the closet.
Refers to a different species of clothes moth, Tinea pellionella.
The origin is uncertain. The kanji 衣蛾 literally means 'clothing moth'.