In zoology terms the difference between tettigonid and tettigoniid
is that tettigonid is any member of the Tettigonidae while tettigoniid is any member of the family Tettigoniidae, the katydids or bush-crickets.
tettigoniid
English
Noun
(
en noun)
(zoology) Any member of the family Tettigoniidae, the katydids or bush-crickets.