Insect and Spider Identification: CLOSED: Bugs in my citrus leaves ?, 1 by thenymph

thenymph wrote:
I hope I've posted in the right place ?! I have small lemon and orange trees. The small fruits are dropping off and the leaves have a nasty bumps in them, with something under the surface. I have not seen this before in the two years we have lived here. Is this an infection of some sort ? Would be very grateful for some help as I don't want to lose the fruit this year. Have considered compost tea and tried a little, but would really like to identify what is going inside the leaves. Thanks in advance !