輪紋 わもんゴキブリではありませんでした
wamongokiburidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 輪紋ゴキブリ

1. Was not a banded cockroach.; Was not a ringed cockroach.

Past/Perfective
Negative
Polite
Formal Register