red currant aphid or cryptomyzus ribis produces raised and vaulted leaf galls on the leaves of redcurrant ribes rubrum

leaves aphids red currant blisters reddish green plant aphid pest damage garden insect nature bush branch leaf macro spring closeup problem disease parasite agriculture foliage animal infected aphididae gardening agricultural natural redcurrant ribes spot summer warts bad illness gallic gall berry biology cryptomyzus parasitic gauls