ぶどうすかしばがであれば
葡萄透翅蛾であれば
budōsukashibagadeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ぶどうすかしば

1. If it is a grape plume moth:; If it’s a grape translucent moth.

Ba Conditional
Usually Written in Kana