. A manual of elementary zoology . Zoology. 294 MANUAL OF ELEMENTARY ZOOLOGY parts, three pairs of true legs, four, or fewer, pairs of soft " prolegs," and a pair of " claspers " at the hind end of the body. They possess silk glands, which open on a spinneret situated below the mouth. The butterfly and moth which are figured as examples in this chapter are both of interest as being harmful to crops. The dull-coloured larvae of the Heart-and-Dart Moth live under the soil by day and come. FIG. 202.—The Green-veined White Butterfly (Pieris napi), and the ichneumon fly that pre
. A manual of elementary zoology . Zoology. 294 MANUAL OF ELEMENTARY ZOOLOGY parts, three pairs of true legs, four, or fewer, pairs of soft " prolegs," and a pair of " claspers " at the hind end of the body. They possess silk glands, which open on a spinneret situated below the mouth. The butterfly and moth which are figured as examples in this chapter are both of interest as being harmful to crops. The dull-coloured larvae of the Heart-and-Dart Moth live under the soil by day and come. FIG. 202.—The Green-veined White Butterfly (Pieris napi), and the ichneumon fly that preys upon it (Hemileles melanarius).— From Theobald. i, Imago; 2, egg; 3, caterpillar ; 4, chrysalis or pupa ; 5, the ichneumon fly; 6, natural size of the latter. out at night to feed, doing much damage to a variety of plants in gardens and in fields. The best remedy against them is a dressing of soot and lime. The Green-veined White Butterfly lays its eggs upon cabbages and other Cruciferse, to which the larvae do injury, though they are responsible for less damage than the Large and Small Whites (P. brassiccz and P. rupee), whose habits are similar. Hand picking is practically the only 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 Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
