PLUSIA TRIPARTITA (Hufn.) URTICÆ (Hübn).
Known in England as the Spectacle Moth. It is met with in the day-time as well as at dusk, like many others of the genus Plusia. Its fore-wings are dark grey, varied with greenish-white in the basal and marginal areas; the sub-terminal line is marked below the costa with black arrow-heads in front, and is bordered with deep black behind. It is common in the greater part of Europe and Northern Asia. The larva, which is greenish brown, has two white lines on the back, and slender white and green lines along each side above the feet. It feeds on nettle.