こがねむしじゃありませんでした
黄金虫じゃありませんでした
koganemushijārimasendeshita

Noun
Desu Copula

The polite, past negative form of こがねむし

1. Was not a golden beetle.; Was not a golden insect.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana