擬宝珠 ぎぼうし むしではありませんでした
gibo ushi mushidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 擬宝珠虫

1. Was not a jewel beetle.; Was not a false jewel beetle.

Past/Perfective
Negative
Polite
Formal Register