Over the next month, you might see more ladybirds coming indoors - especially if you live in more urban areas of Cumbria like Carlisle and Kendal. While native ladybirds will over-winter in garden sheds, leaf litter and crevices in woody plants or fences, the non-native Harlequin (Harmonia axyridis) is looking for somewhere a little warmer to spend the winter diapause and will enter houses to congregate in corners. These ladybirds are originally from Asia so need drier and warmer conditions than the native species.
The Harlequin is very variable - hence the name. The two examples shown here were collected at the same time in the same place! Some colour patterns can look very similar to the native species but generally Harlequins have brown legs and undersides while native species tend to have black legs/underside. Harlequins tend to be quite large too compared to the more variable sizes seen in the 45+ native species.
Over-wintering ladybirds won't do any damage and shouldn't pose a problem wherever you find them. But if you do find some in your home and they have brown legs, you can be confident that they are the Harlequin. Do record any ladybirds that you see so we can better understand the key locations of Harlequins across Cumbria and how they might be interacting with the natives.
And if you want to see a plentiful number of Harlequins this month, Mayor's Drive near Bitts Park in Carlisle is usually a good spot.