noun
moth
General term for moths, as opposed to butterflies (蝶).
夜、蛾が灯りに集まってきた。
At night, moths gathered around the light.
蝶 means butterfly, while 蛾 means moth.
The kanji 蛾 is a phono-semantic compound: the insect radical 虫 combined with the phonetic 我 (ga).