こうしかげろうじゃありません
紅糸蜻蛉じゃありません
kōshikagerōjārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of べにいととんぼ

1. Not a red dragonfly.; Not a mayfly.

Negative
Polite
Terminal Form
Usually Written in Kana