Free images results:

Feeler pictures, stock photos and images


Antennas Stock Images
Author: Ichtor
Crayfish Royalty Free Stock Photography
Author: Kuksin
Snail Royalty Free Stock Photo
Author: Tiniiiii

Also, here are some commercial RF-licensed images that match your search criteria:  
Katydids Royalty Free Stock Image
Author: Laozhang
GRASSHOPPER Stock Photography
Author: Fpf