. Bulletin. ack dots. Tlie winter is passed in thechrysalis stage. After the caterpillar changes to a chrysalis, their minute parasitesfrequently bore through the outside and deposit their eggs hatch before the time for the butterflies to emerge, and feed-ing on the contents, destroy the life of the chrysalis. Birds and spiders are of great service in destroying these insects. The pupae should be collected and burned if the abdomen is flexi-ble ; but if the joints of the abdomen are stiff and cannot be easilymoved, they should be left, as they contain parasites. Several applicatio
. Bulletin. ack dots. Tlie winter is passed in thechrysalis stage. After the caterpillar changes to a chrysalis, their minute parasitesfrequently bore through the outside and deposit their eggs hatch before the time for the butterflies to emerge, and feed-ing on the contents, destroy the life of the chrysalis. Birds and spiders are of great service in destroying these insects. The pupae should be collected and burned if the abdomen is flexi-ble ; but if the joints of the abdomen are stiff and cannot be easilymoved, they should be left, as they contain parasites. Several applications of poisons have been used, the best resultsbeing obtained from the use of pyrethrum as a powder blown on tothe plants by a hand bellows, during the hottest pait of the day, inthe proportion of one part to four or five of flour. As the eggs are laid at different times, any application, to be thor-oughly tested, must be repeated several times. 22 THE APPLE-TREE TENT-CATERPILLAR. Clisiocampa amerteawaJH Fig. 15. Large, white, silken web-like tents. Fig. 15, are noticed by theroadsides, in the early summer, on wild cheiry trees, and also onfruit trees in orchards, containing numerous caterpillars of a blackishcolor with fine gray hairs scattered over the body. This well known pest has been very abundant throughout the statefor several years past, and the trees in many neglected orchards havebeen greatly injured by it, some being entirely stripped of theirleaves. The trees in these orchards and the neglected ones by theroadsides form excellent breeding places for this insect, and such asare of little or no value should be destroyed. If this were well done,and all fruit growers in any given region were to destroy all the tentson their trees, even for a single season, the work of holding them incheck or destroying them in the following year would be compara-tively light. The moths. Fig. 16, appear in great numbers in July, their wingsmeasuring, when expanded, from one and a q
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