. A text-book of agricultural zoology. Zoology, Economic. 174 LEPIDOPTERA (BUTTERFLIES). Butterflies (Ehopalocbea). Amongst the seventy British Butterflies only three {Pieridm or Whites) can be considered of economic importance. The clubbed antennae always identify a butterfly. The larvas, too, are often spiny, and the pupa or chrysalis (4) is angulated,. Fia, 77.—Green-veined White (J'wris tw/pz). 1, Imago ; 2, ovum; 3, larva ; 4, chrysalis ; 5, Ichneumon Fly (HemifdeS melan- ariufi); 6, natural size. (Curtis.) and generally pale in colour. No cocoon is formed, the chry- salids either hanging
. A text-book of agricultural zoology. Zoology, Economic. 174 LEPIDOPTERA (BUTTERFLIES). Butterflies (Ehopalocbea). Amongst the seventy British Butterflies only three {Pieridm or Whites) can be considered of economic importance. The clubbed antennae always identify a butterfly. The larvas, too, are often spiny, and the pupa or chrysalis (4) is angulated,. Fia, 77.—Green-veined White (J'wris tw/pz). 1, Imago ; 2, ovum; 3, larva ; 4, chrysalis ; 5, Ichneumon Fly (HemifdeS melan- ariufi); 6, natural size. (Curtis.) and generally pale in colour. No cocoon is formed, the chry- salids either hanging with the head downwards and attached by a lump of silk at the tail, or suspended head upwards, when they are girdled by a small band of silk as well as a caudal attachment. In England all Butterflies are day-fliers. The Large White (Pieris brassicce). We may take the Large or Cabbage White (Pieris hrassieae) as our type. The fore-wings of this species are creamy- white, with a broad black patch at the tip in the male; in the female there are also two black spots in the middle of the wings. The under-side of the front wings of both male and female is white, with two black spots; the posterior pale yellow with a fine dusting of black. The eggs are laid on the under-surface of cruciferous plants, are yeUow in colour, and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Theobald, Frederick Vincent, 1868-1930. Edinburgh and London, W. Blackwood and sons
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1899
