this is as Johm and Jane suggested Xanthogaleruca luteola (Elm Leaf Beetle) and not Triocholochmaea

Thank you for the correction and for confirming John and Jane's idea. I've moved the image to the species page. Is it odd that this beetle lives here even though we don't have any elm trees in Newfoundland?

I suspect there will some elms somewhere, but maybe it feeds on other trees as well. Here´s some info I found on the internet:

The elm leaf beetle is often considered as muchof an indoor nuisance as a garden pest since large numbers of adults migrate into homesseeking a protected place to overwinter. Outdoors, both adults and larvae feed on the emerging leaves of virtually all species of elmtrees, leaving skeletonized foliage in their wake. Repeated severe infestations can markedly weaken a host tree, making it susceptible to other insects and diseases.

in the Galerucinae

Just a short question. When looking around for a bit more information, I found this pdf document that discusses leaf beetles in the Atlantic provinces of Canada. It says that a Pyrrhalta viburni specimen was collected in Newfoundland very near when I photographed this beetle. It also goes on to talk about how to distinguish Pyrrhalta from Tricholochmaea. Are you OK with this being Tricholochmaea and not Pyrrhalta?

Appreciate the quick ID. :)