. Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges. Beneficial insects. 300 A A' ECONOMIC ENTOMOLOGY. by the application of a stomach poison, the caterpillar succumb- ing readily to any of those in ordinary use. There is a series of decidedly depressed or flattened moths with narrow, long fore-wings, broad hind wings, a somewhat retracted head clothed with stitT, projecting vestiture, and a neat little tuft on the anterior part of the thoracic collar. These belong to the genus Xylina, or its near allies, and they
. Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges. Beneficial insects. 300 A A' ECONOMIC ENTOMOLOGY. by the application of a stomach poison, the caterpillar succumb- ing readily to any of those in ordinary use. There is a series of decidedly depressed or flattened moths with narrow, long fore-wings, broad hind wings, a somewhat retracted head clothed with stitT, projecting vestiture, and a neat little tuft on the anterior part of the thoracic collar. These belong to the genus Xylina, or its near allies, and they appear late in fall, to hibernate as adults. In spring they reappear as soon as the weather becomes in the least warm, and moths of this kind are Fig. 3 etc,'* Xyli)ia aiitcnnata: a, its larva in peach ; b, adult moth. often found in maple groves while sugaring is going on. Some- times sap-pails are found in the morning with the surface of the liquid completely covered with these insects, which, taken as a whole, are northern, though some extend south and southwest, and even to the Pacific goast. One of the most common is the X. antennata, the caterpillar of which has been described by Riley as boring into fruits ; but it is a rare species, comparatively, and no marked injury is ever done. Now we reach a group of moths in which the caterpillars usually lack one pair of the false or abdominal legs, and for this reason are known as " semi-loopers," having somewhat the methods of motion found in the "span-worm," but not to so marked an extent. Of this series we have several more or less troublesome species, and the most important are the "cotton- worms" belonging to the genera Anomis and Aletia, all of them feeding upon the leaves. The larvse are similar in appearance, green, more or less narrowly banded at the sides, and Please note that these images are extracted from scanned page images that may have been digitally enhanced for read
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1896
