Left, A Birch Leaf-roller's (<i>Deporaus betulae</i>) cut in a leaf. Right, a completed leaf-roll
Nordisk familjebok
1916
<a href="//commons.wikimedia.org/wiki/Nordisk_familjebok" title="Nordisk familjebok">Nordisk familjebok</a> (1916), vol.23, p.1143 <a rel="nofollow" class="external autonumber" href="http://runeberg.org/nfcc/0624.html">[1]</a>