おはぐろかげろうじゃないです
御歯黒蜻蛉じゃないです
ohagurokagerōjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of おはぐろとんぼ

1. It's not a dragonfly.; It's not a fancy/rare dragonfly.

Negative
Polite
Casual Register
Usually Written in Kana