User blog comment:BannedLagiacrus/Temnoceran Discussion/@comment-27125903-20161112070016/@comment-4481348-20161113030918

Maybe for the arachnid class they could just be able to attack with their forearms. Nerscylla and Akura can both do this, if you look at Seltas Queen, she only uses hers for shielding.

Anyways that's my guess.