After hatching from the egg, the mourning-cloak caterpillars are also subject to the attacks of various parasites.
In their habits they are quite similar to the caterpillars of the mourning-cloak.
This species is commonly called the mourning-cloak butterfly—not a particularly happy name for so beautiful an insect.
I had made a mourning-cloak of the apron by tying it, hind part before, about my neck, whence it drooped to my heels.
On a clear afternoon in early April I took my stand in a woodland where many mourning-cloak butterflies were on the wing.
The caterpillars of the mourning-cloak butterflies are restricted to comparatively few food plants.
Some species deposit several in a group, while some, like the mourning-cloak, may lay two or three dozen in a cluster.
One fine spring morning I came upon a mourning-cloak depositing a cluster of eggs upon a willow twig.
He identified it as Telenomus graptae, a well-known parasite of the eggs of the mourning-cloak and related butterflies.
One is the familiar mourning-cloak and the other is the Compton Tortoise—the latter generally much less abundant than the former.