Where does it say you need this? Err, what do you even need it for I guess is my question?
The butterfly beetle is a material you need to make the Aelucanth armour but so far I also cant find any clues or hints on where to find them. I searched everywhere even the guide that gamestop gives u for pre ordering it but so far I have found nothing :(
Oh you probably need to use some certain fertilizer kinda like the saturian trap if anyone knows what I am talking about --- C-130 J models are pretty beastly... theres Friggin 6 God darn Blades!... of Death!