![Image](http://www.photomacrography.net/forum/userpix/413_LueucaniaMultilinea_1.jpg)
EDIT: OK, I didn't really expect anyone to actually ID it to species. It's most of the genitalia (just the aedoeagus (penis) missing)) of a male noctuid moth, a "Many-lined Wainscot" (Leucania multilinea).
The reason for posting this image was to show the intricate detail (even beauty) of moth genitalia. Such preparations are easy to make and the images serve a useful purpose as for several groups of moths, both here in NA, in Europe and doubtless throughout the world, the genitalia are the only positive way to get an accurate ID. It's quite amazing how very similar moths in the same genus will have such different genitalia.
Some recnt NA moth books do illustrate male genitalia but these images are usually small (1.75" square) and thus the beauty of the structurers and the differences between the species is not easy to see. It would be nice to have photos of moths coupled with decent photos of their genitalia.