Fig. 4
From: Morphology of powerful suction organs from blepharicerid larvae living in raging torrents
Suction disc of L. cinerascens larva in contact with a glass surface, visualised using in vivo interference reflection microscopy (IRM). Small, roughly circular black dots represent microtrichia in close contact to the surface (see region encircled in red). White regions are slightly further away, and grey regions even further from the surface. Arrow points to the V-notch (see text for details). A: anterior; CO: central opening. Scale bar: 15 μm