Hemiptera: Aphididae - aphid Hyperomyzus lactucae Blackcurrant-sowthistle Aphid Galls on Ribes nigrum, Blackcurrant Primary host: Ribes nigrum. Very rare on other species of Ribes Secondary host: Usually Sonchus spp, Sowthistles. Occasionally Carduus, Cichorium, Crepis, Cynara, Lactuca, Scorzoneroides, Picris, Taraxacum, Tragopogon Raised, swollen patches on uppersides of leaves, aphids in hollows below Similar: Cryptomyzus ribis occurs on Redcurrants, Ribes rubrum

Hyperomyzus lactucae
Kingston Lacy, Dorset. July 2018