Patagium:
The patagium (pl.: patagia) is a membranous body part that assists an animal in obtaining lift when gliding or flying. The structure is found in extant and extinct groups of flying and gliding animals including bats, birds, some dromaeosaurs, pterosaurs, gliding mammals, some flying lizards, and flying frogs. The patagium that stretches between an animal’s hind limbs is called the uropatagium (especially in bats) or the interfemoral membrane. [Wikipedia]
Goodness. That’s new. Noted in “The Colugo Looks Like a Cross Between a Bat and a Monkey, But Is Neither,” Joshua Rapp Learn, Discover:
Colugos can’t fly. Instead, they glide through the forest using a thin gliding membrane that covers their bodies – also known as a patagium. This membrane stretches from their neck down to the two sides of their tail, looking a little like a human in a wingsuit when they stretch it out and set sail on the winds.
