歯黒 はぐろ蜻蛉 かげろうじゃないです
ohagurokagerōjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 御歯黒蜻蛉

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

Negative
Polite
Casual Register