User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-173.171.174.55-20130506023211/@comment-112.209.2.118-20130507142249

^ You can only get R.Ludroth tails from carving the tail. Capturing it will not yield a tail in the capture rewards. Don't know if it the quest rewards (first two rows in the rewards screen) itself can give you tails though. I highly doubt it.