Beetle.

Beetles fly, but they do not leap (Lev. 11:21).
Crickets, which are related to locusts, both fly and leap. Some scholars contend that katydid, or locusts, are more likely the correct translations of this one biblical reference to beetles or crickets.

Source: [Anon-Animals]

Beetle

given by A.V. (Leviticus 11:22) as an equivalent for Hebrew, árbéh, does not meet the requirements of the context: “Hath the legs behind longer wherewith it hoppeth upon the earth”, any more than the bruchus of D.V., some species of locust, the locusta migratoria being very likely intended.

Source: [http://en.wikipedia.org/wiki/List_of_the_animals_in_the_Bible]