ごきぶりでわありませんでした
蜚蠊ではありませんでした
gokiburidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of ごきぶり

1. Was not a cockroach.; Was not a locust.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana