Fifth report of the United States Entomological Commission, being a revised and enlarged edition of Bulletin no7, on insects injurious to forest and shade trees . indigo, wildblack cherry {Prunus serotina), andthe willow, currant, cotton, clover,elm, hop-vine, balsam-poplar, balmof Gilead, dogwood, and chakecherry, we have found it in Maine,where it is a rare moth, feeding onthe rock or sugar maple, and hencerefer to it under this head. Theeggs are top-shaped, attached bythe smaller end, in patches ofabout thirty, on the under side ofleaves. The caterpillars in theWestern States begin to hatch
Fifth report of the United States Entomological Commission, being a revised and enlarged edition of Bulletin no7, on insects injurious to forest and shade trees . indigo, wildblack cherry {Prunus serotina), andthe willow, currant, cotton, clover,elm, hop-vine, balsam-poplar, balmof Gilead, dogwood, and chakecherry, we have found it in Maine,where it is a rare moth, feeding onthe rock or sugar maple, and hencerefer to it under this head. Theeggs are top-shaped, attached bythe smaller end, in patches ofabout thirty, on the under side ofleaves. The caterpillars in theWestern States begin to hatchabout the end of, June, gettingtheir growth in two months, aftermolting five times. The spines arepoisonous to the fingers, and thecaterpillar can not be handledwithout causing some pain and Irritation. Mrs. Dimmock has summarized in Psyche (iv, 275) what is known ofthe habits of this caterpillar as follows: Ryperchiria io Fabr. (Syst. Entom., 1775, p. 560). Harris (Rept. Ins. Injur. Veg.,1841, p. 283-285) describes the larva and male and female imagos ; later (Treatise onIns. Injur. Veg., 1862, p. 393-396) he adds to the descriptions figures of the larva,. Fig. 148.—Green stinging io caterpillar.—AfterRiley. MAPLE CATERPILLARS. 395 pupa, cocoon, and male and female imagos; and still later (Entom. Corresp., 1869,p. 295-297) he gives a more extended description of the larva. Morris (Synop. A., 1862, p. 220) briefly describes the larva. Packard (Guide Study Ins., 1869, ) gives brief notes on this species under the name of HypercJiiria varia (Can. Entom., Oct., 1869, v, 2, p. 19, 20) briefly describes the larva, andMinot {op. cit., Nov., 1869, v, 2, p. 28, 29) describes egg and larva without recognizingthe species. Lintner (Entom. Contrib., No. 2, 1872, p. 146-149) describes the egg,the six larval stages, the pupa, and the cocoon. Riley (Fifth Rept. State , 1873, p. 133) describes egg, larva in its sis stages, cocoon, and imago of thisspe
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