locustarian|ləʊkʌˈstɛərɪən| [f.mod.L. Locustari-æ, f. locusta: see -an.] An insect of the group Locustariæ (in Latreille's classification) of green grasshoppers, katydids, etc. 1895Nature 5 Dec. 108/1 Mr. Scudder..has given much attention to the sounds made by locustarians.