Lorraine Bennery / Blue underwing moth (Catocala fraxini) camouflaged on tree, Loir-et-Cher, France, October.

David Kjaer / Clifden nonpareil moth (Catocala fraxini) Wiltshire, UK

Jussi Murtosaari / Blue moth (Catocala fraxini) Lemland, Ahvenanmaa / Aland Islands Archipelago, Finland. September

Robert Thompson / Clifden nonpareil / Blue underwing moth (Catocala fraxini) camouflaged on tree trunk, southern England, UK, August

Robert Thompson / Caterpillar larva of Blue underwing moth (Catocala fraxini) UK

Stephen Dalton / Clifton nonpareil moth (Catocala fraxini) Sussex, England, UK, September.