あげはちょうじゃなかったです
揚羽蝶じゃなかったです
agehachōjanakattadesu

Noun
Desu Copula

The polite, past negative form of あげはちょう

1. Wasn't a butterfly.; Wasn't a butterfly (casual polite).

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana