Most people use hare body fur in place of hare's ear. A lot of tyers
secretly always have done!
The fur from the ear is difficult to get in a decent amount in the correct shade for many patterns. It's also far too short to tease-out from the sides of the thorax with a dubbing needle to get the correct effect for the GRHE nymph for a size 10 or 12 dressing.
I mix roughly equal parts of the body fur guard hairs, the black underfur & the brown/light grey underfur to get just the right "buggy" look to my GRHE nymphs, as in the 2 on the front left here:
Definitely use a body fur patch instead - it's called a
trick of the trade!