Some Important Insects of Illinois Shade Trees And Shrubs

Cover Some Important Insects of Illinois Shade Trees And Shrubs
Some Important Insects of Illinois Shade Trees And Shrubs
Stephen Alfred Forbes
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20) are laid in a thick hard band around a twig and covered with an impervious varnish. From these the young hatch in early spring, sometimes before the appearance of the leaves on which they depend for food.
Fijr. 20. Forest Tent Caterpillar, Malacosoma disatria: e, egg ring re- cently laid; g, hatched egg ring.
Slightly enlarged. (Cornell Ex- periment Station.) p*v.
~ ^ "3 f^ Mi ^7% V ^ Ji K €^ f ^ J W .^^^ Fig. 21 . Forest Tent Cater- pillar, Malacosoma disstria: m, male; /, female. Natural
...size. (Cornell Experiment Station.) Digitized by Googk igii] Important Insects of Illinois Shade Trees and Shrubs 485 They are capable, however, of fasting for a considerable time with- out injury, and they may even survive the destruction of the leaves by late frosts. They scatter for pupation late in May or early in June, spinning cocoons which they fasten among clusters of leaves or exposed on fences and in other similar situations. There is but a single generation in a year. The parent moths (Fig.

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