A leaf beetle?

A leaf beetle?

Observation - A leaf beetle? - UK and Ireland. Description: This little beetle seemed quite distinctive when I found it - but it was not in the Collins photo guide, so I took some photographs through the microscope which hopefully illustrate enough ID characters. The head has retracted right under the pronotum.

This little beetle seemed quite distinctive when I found it - but it was not in the Collins photo guide, so I took some photographs through the microscope which hopefully illustrate enough ID characters. The head has retracted right under the pronotum.