すぎどくがじゃありませんでした
杉毒蛾じゃありませんでした
sugi dokugajārimasendeshita

Noun
Desu Copula

The polite, past negative form of すぎどくが

1. Was not a hemlock moth.; Was not a poison hemlock moth.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana