Yes, actually they are helpful. I had a wart on my elbow and a oldtimer told me to let the katydid bite my wart and it would go away. I tried it and sure enough in about 2 days the wart was gone! I couldn't believe it!
crickets have crickets and katydids have katydids
yes but only when there dead
Yes, some katydids do hibernate, but not all.
they are green and can be blue or a tuquis
No, katydids are not venomous. They are herbivorous insects that primarily feed on leaves, flowers, and other plant material. They do not possess venom or use it for defense or hunting.
.9
humans
no
Katydids are more closely related to crickets than to grasshoppers. See Link.
that is what you think .
about 1in
The scientific name for a katydid is Tettigonia viridissima.