Hydrothassa glabra is a Europe species of leaf beetle in the family Chrysomelinae Hydrothassa glabra grows to 3 - 4mm in length and are dark metallic blue and orange-yellow in colour.

[1] The elytra is coloured orange-yellow with lateral margins.

[1] H. glabra is a widespread species,[1] It has various host plants, particularly buttercups.

[1][2] Adults overwinter in grass tussocks.

[1] H. glabra is prevalent in central and northern Europe,[3] with a widespread and scattered distribution in the United Kingdom.