うすばかげろうじゃないです
薄羽蜉蝣じゃないです
usubakagerōjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of うすばかげろう

1. It's not a mayfly.; It's not light/thin like a mayfly.

Negative
Polite
Casual Register
Usually Written in Kana