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Show 248 MR. E. B. POULTON ON THE PROTECTIVE [Mar. 1, TABLE V Species and Stage. Imago Pygcera bueephala .. Imago Dasychira pudibunda Imago Orgyia antiqua (female). Imago Mamestra brassicce.. Imago Mamestra persicar'ue Protective resemblance, or habits of concealment, evasion, &c. 3. LKPIDOPTEEOUS Flight not powerful: in the evening. At rest the fore wings and body are seen, and are grey with darker markings. The insect is large and apparently not inconspicuous; but it must be carefully concealed, for it is not commonly found, although so abundant a species. Flight not powerful: in the evening. At rest it is " like the broken end of a lichen-covered branch" (Wallace, as above). This effect is produced by the purple and pearly-grey colour of the fore wings, with brown markings, and the ochreous tip, and by the ochreous head and thorax. A very perfect form of imitative resemblance, the wings being rolled round the body so as to produce a cylindrical shape, with yellow ends, like a broken piece of decayed stick. Flight not powerful: in the evening. At rest the colours, due to fore wings and body, are grey with darker markings. Although common, it is rarely seeu, and must be carefully concealed. The female Moth has rudimentary wings, and never quits its cocoon, but sits on the outside of it, being very inconspicuous, as it is covered with grey down, which harmonizes well with the colour of the surface upon which it is resting. Flight rapid : at night. Rests by day " on the north side of trees," and therefore protected by resembling lichens (Wallace, as above). Fore wings and body alone seen at rest-grey, with dark markings. I have certainly often seen it on other aspects than north; but anywhere on rough bark it is well concealed. Flight rapid : at night. By day well concealed by the tints of fore wings and part of body, which are "dark smoky grey-brown, with confused markings both darker and paler" {Newman); thus well protected on trunks, rocks, asfij Flight rapid : at night. By day well concealed (probably in dark corners), as it is seldom seen at rest. The fore wings and part of body alone seen, and are " rich dark bistre-brown" {Newman), with a white spot with a darker nucleus in the centre of the wing. |