Underwing's underside

Apparently not a *true* underwing, the "Large yellow underwing" has no trouble holding its name. The upperwings, here beneath the underwings, are plain browns, while the underwings are a bright orange, with that striking black bar.

I never saw one until recent years. They are a recent invader of these parts. I mistook this fellow, based on his orange upper side, for a European skipper. But I have been corrected.

I took pictures of both the up-side and the down-side but I particularly like this one of his underside aspect.

He was dead when we found him sitting inside the door of the fireplace. He'd probably been there since autumn, though we had used the fireplace a few times. Where he was was warm enough to dry out but not hot enough to burn. A kind of Limbo. The very vestibule of the inferno.