ひぐらしじゃありませんでした
蜩じゃありませんでした
higurashijārimasendeshita

Noun
Desu Copula

The polite, past negative form of ひぐらし

1. Was not a cicada.; Was not (something else, depending on context).

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana