Appearance
"P. egea" Cr.. A species similar to c-album with the wings more strongly dentate and narrower, and the underside more thinly marmorated and pencilled, the hindwing beneath bearing in the centre a white angle-, hook- or J-mark. The female flying at the same season as the nymotypical has the wings less sharply dentate, is paler, less prominently and more sparsely marked. Ab. "autumnalis" Curo is the autumn-form, which has the wings more strongly angulate and of a darker ground-colour. The spots are very prominent, the distal margin of both wings is darkened, the light submarginal spots of the hindwing are very distinct, though small and isolated, and the underside is darkened. — The larva of the species feeds on Picrataria diffusa Keh. in July and October; as food-plants are also mentioned "Ulmus", "Urtica", "Ribes", "Lonicera", "Corylus". It is blackish or slaty grey, with yellow and black belts, the body bearing minute white hairs and dark branched spines; on the back there are pairs of large bluish black spots on a pale ground; the spirales are edged with yellowish, beneath them there being a reddish yellow line; the head heart-shape with 2 spine-like processes.Pupa grey-brown, tuberculate above, without metallic spots, the head not produced.
Food
The larvae feed on "Parietaria officinalis".References:
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