This summer has seen a massive cohort or two of Xanthogaleruca luteola, and most elms in the town have been seriously defoliated (except for some of the variegated cultivars). Some nights there are thousands of dead beetles piled up outside lit shop windows, and I've had a steady stream of them inside my house.
There are lots of these in the house I've just moved into in the centre of Kyneton. I haven't seen any frass around the place to suggest that their larvae are eating the house, but they just keep appearing! About 5mm in length. Excuse the poor mobile phone image.