かわげらでわありませんでした
川螻蛄ではありませんでした
kawageradewārimasendeshita

Noun
Desu Copula

The polite, past negative form of かわげら

1. Was not a river mole cricket.; Was not a kawagera.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana