In their report last week in the journal Interface, they described that puffy leglike bit of the kernel as acting like a muscle.

The short, leglike extremities on a harvestman’s face, the pedipalps, are covered in tiny hairs that carry droplets of sticky liquid at the tips.

This doesn’t even begin to suggest spiders’ sex lives, in which pedipalps — leglike appendages on males — play a central role.