やんばるてながこがねむしなら
山原手長黄金虫なら
yambarutenagakoganemushinara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of やんばるてながこがね

1. If it's a mountain hand-long golden beetle…; When it's a mountain hand-long golden beetle…

Nara Conditional
Usually Written in Kana