うしあぶじゃなかったです
牛虻じゃなかったです
ushiabujanakattadesu

Noun
Desu Copula

The polite, past negative form of うしあぶ

1. Wasn't a horsefly.; Wasn't a gadfly.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana