Movement Parallax and Distance Perception in the Grasshopper (Phaulacridium Vittatum (Sjöstedt))

It has sometimes been argued that insects use binocular vision to obtain correct perception of sizes and distances in their visual world (cf. Wigglesworth, 1972). In the praying mantids it has also been claimed that monocular animals essentially lack depth perception (Maldonado, Benko & Isern, 1970).