Lacewing fly winter guest

When we first moved into this old house, about 35 years ago, it had an interesting and diverse invertebrate fauna. There were gaps and draughts through the doors, windows and floors and I can recall a wide range of winter visitors in those days: devil's coach horse beetles, small tortoiseshell butterflies, ladybirds, woodlice, earwigs, several species of moth. But as we renovated the place and made it more energy-efficient it became harder for small animals to find their way in. Those that arrive these days mostly come in on our clothes or on plants brought in from the garden. That's probably how this lovely green lacewing arrived, back in the autumn. It woke up from its winter hibernation in January.

 

I think it's a green lacewing Chrysoperla carnea, which is really a group of almost identical cryptic species that can only be told apart by the sounds that they make. Courting lacewings communicate with each other by drumming with their feet on leaf surfaces, creating vibrational songs, and each cryptic species has its own distinctive song frequency. 

This individual is currently spending the winter behind a picture on the wall. When spring arrives I'll let it go in the garden - lacewing larvae are useful, very effective aphid predators.