Beet tortoise beetle

''Cassida nebulosa'' is a tortoise beetle, a species of leaf beetle , belonging to the subfamily Cassidinae.

It feeds on several plants of the family Chenopodiaceae; particularly on beet ''Beta vulgaris'', on ''Chenopodium album'', on ''C. glaucum'' and on ''Atriplex hortensis''.

It is widely distributed in most of Europe.