こうろぎじゃありませんでした
蟋蟀じゃありませんでした
kōrogijārimasendeshita

Noun
Desu Copula

The polite, past negative form of こおろぎ

1. Was not a cricket.; Was not a grasshopper.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana