Key for the identification of British Homoptera-Stenorrhyncha
Superfamily Psylloidea
Superfamily Psylloidea
Superfamily Psylloidea key to the 25 common British species.pdfSuperfamilies Phylloxeroidea and Aphidoidea (aphids)
Superfamilies Phylloxeroidea and Aphidoidea (aphids)
Key to the families of British Aphidomorpha.pdf