まつむしくさじゃなかったです
松虫草じゃなかったです
matsumushikusajanakattadesu

Noun
Desu Copula

The polite, past negative form of まつむしそう

1. Wasn't a mantis shrimp.; Wasn't a praying mantis shrimp.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana