Elm leaf beetle

6841.        I have been seeing this bugs for the last 3 weeks once a while. Maybe 10 of them. They are attracted to light since I can see them on windows or on a turned on tv. What kind of bug is it and does it harmful? The bug length is about 1/6″ to 1/4″. Toronto.

Number 6841. This is an elm leaf beetle, Xanthogaleruca luteola (Coleoptera: Chrysomelidae). These beetles and their larvae feed on leaves of elm trees; they would do no harm indoors. Click here for more detailed information.