Albert Barnes Commentary Leviticus 11:21

"Yet these may ye eat of all winged creeping things that go upon all fours, which have legs above their feet, wherewith to leap upon the earth." — Leviticus 11:21 (ASV)

Legs above their feet, to leap withal upon the earth - The families of the Saltatoria, of which the common cricket, the common grasshopper, and the migratory locust, may be taken as types.