こうしかげろうじゃないです
紅糸蜻蛉じゃないです
kōshikagerōjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of べにいととんぼ

1. It's not a red dragonfly.

Negative
Polite
Casual Register
Usually Written in Kana