Katydid, a name applied to numerous American insects, nearly related to grasshoppers. They are arboreal in habit, and are well concealed in the foliage by their green colour. The true katydid, abundant in the central and western states, is Cyrtophyllus concavus, but Microcentrum retinervis is yet commoner, and there are several other species belonging to these and other genera. In their general habit, e.g. in the 'song' to which the syllables kat-y-did refer, and in the egg-laying accomplished by the long ovipositors of the females, these lively insects resemble Grasshoppers (q.v.).
Katydid
Chambers's Encyclopaedia, Volume 6: Humber to Malta, p. 400
Source scan(s): p. 0415