こばいちょうじゃなかったです
小灰蝶じゃなかったです
kobaichōjanakattadesu

Noun
Desu Copula

The polite, past negative form of しじみちょう

1. Was not a small gray butterfly.; Wasn't a small gray butterfly.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana