Hydrothassa hannoveriana

Hydrothassa hannoveriana is a species of leaf beetle in the family Chrysomelinae. It is found in Europe.

Description
Hydrothassa hannoveriana grows to 3.5 - 5.0mm in length and are dark metallic blue and orange-yellow or reddish in colour. The elytra are coloured yellowish in median longitudinal strips. These elytral marks may fuse, especially at the rear in females; the median stripe may also be broken or absent. The species may be confused with H. glabra or H. marginella.

Habitat
It has various host plants, especially buttercups and marsh-marigolds.

Distribution
H. hannoveriana have a scattered distribution in central and northern Europe. In the United Kingdom it is designated as 'Nationally Scarce' and categorised by the IUCN criteria "vulnerable".