Grasshopper in Wikipedia
Grasshopper, is probably the best rendering for the Hebrew, hãgãb [Lev., xi, 22; Num., xiii, 34 (Hebrews 13:33); Is., xl, 22; Eccles., xii, 5, etc.], as in the A.V., if the Hebrew word be interpreted "hopper" as Credner suggests; the D.V. uses the word locust. The grasshopper is one of the smaller species of the locust tribe.
Locust in Wikipedia
Locust. - One of the worst scourges of the East, very often referred to in Bible. As many as nine Hebrew words signify either the locust in general or some species:
(1) 'árbéh, probably the locusta migratoria;
(2) gãzãm, possibly the locust in its larva state, the palmerworm;
(3) Gôbh, the locust in general;
(4) chagab, most likely the grasshopper;
(5) hãsîl, "the destroyer", perhaps the locust in its hopper state, in which it is most destructive;
(6) hárgõl, translated in the D.V. ophiomachus;
(7) yéléq, the stinging locust;
(8) çelãçâl possibly the cricket; and
(9) sôl'ãm, rendered by attacus, or bald locust (probably the truxalis).
Unlike other insects, locusts are most voracious in every stage of their existence.