はぐろかげろうでわありませんでした
羽黒蜻蛉ではありませんでした
haguro kagerōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of はぐろとんぼ

1. Was not a darner dragonfly.; Was not a mountain darner.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana