Agelastica alni (Linné, 1758)
Family: Chrysomelidae
Size: 6 to 7 mm 
Distribution: Europe
Biology: Lives on  Alnus glutinosa and Alnus incana
Location: Germany, Bavaria, Upper Franconia, Selbitz
leg.det. U.Schmidt, 1973
Photo: U.Schmidt, 2011

Agelastica alni  (big)

Agelastica alni  (Flickr)

Agelastica alni  (Wikimedia Commons)

Location List Coleoptera Germany Upper Franconia without Staphylinidae  (Google Drive)

Location List Chrysomelidae Palaearctic Region  (Google Drive)