Following the current version of the German Copyright Law you have to be member of a closed user group to legally obtain PDF copies through ECatSym from the library of the Deutsches Entomologisches Institut (DEI). Therefore please login with your first name + family name and with your personal password. After login, the order buttons will appear on the sites behind the literature references. You will be logged out automatically when leaving the ECatSym website. You are not yet a member, or have forgotten your password? Please send an to us and we will confirm your password by return. The password will first become valid on the following day, because the online database is automatically updated only once per day.