えぞせみじゃなかったです
蝦夷蝉じゃなかったです
ezosemijanakattadesu

Noun
Desu Copula

The polite, past negative form of えぞぜみ

1. It wasn't an Ezo cicada.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana