Figure 1.

Attachment pads of Gastrophysa viridula larvae. (a) L1 attached to the underside of a glass slide. (b,c) Cryo-SEM images of pads frozen in contact with a glass cover slide; cover slide is removed after freezing of pygopod (b) and pretarsal adhesive pad of thoracic leg (c). (d) Lateral view of tarsal pad of L3, frozen in contact with glass slide. Arrows indicate anterior–posterior body axis. Labels: ab, terminal abdominal segment; ca, pad contact area; cl, claw; pp, pygopod; tp, tarsal pad; tt, terminal tarsomere.