Several of these long-horn beetles appeared, attracted to the wall lights in my sitting room. They live under the bark on trees and presumably have come from the firewood stacked up ready for my log-burner. This species is identified from other similar beetles by the dark colour, reddish patches on parts of the legs & antennae and the elongated second segment of the antenna. Normally they fly in April-May, but as it’s nice and warm in the house they have emerged early.