This is the 9771st most frequent Japanese word.
蛾
Moth.
In this sentence, '蛾' refers to the insect commonly known as a moth. It is used as a subject to describe an event where a moth entered the home.
昨夜、蛾が家に入ってきた。
Last night, a moth entered the house.
Here, '蛾' is used generically to talk about the species as a whole, describing its typical behavior.
蛾は夜に光に向かって飛ぶ習性があります。
Moths have a habit of flying towards light at night.
In this sentence, '蛾' is used to specify that the larvae mentioned are those of moths, emphasizing the type of insect involved.