. A manual for the study of insects. Insects. 1/2 THE STUDY OF INSECTS. Scale, and of many other forms, the scale-like object com- monly seen is not the insect, but an armor beneath which it hves. The young insects of this sub-family resemble in general appearance those of other scale insects. Their active stage, however, is much shorter. After crawhng about over the .-aft/.. aixML i^iG. 212.—ChionaspispinifolicB: 2, scales on Pinus strobus, natural size, leaves stunted; 2«, leaves of P. strobus not stunted by scale insects; -zb, scale of female, usual form, enlarged ; 2c, scale of female, wid
. A manual for the study of insects. Insects. 1/2 THE STUDY OF INSECTS. Scale, and of many other forms, the scale-like object com- monly seen is not the insect, but an armor beneath which it hves. The young insects of this sub-family resemble in general appearance those of other scale insects. Their active stage, however, is much shorter. After crawhng about over the .-aft/.. aixML i^iG. 212.—ChionaspispinifolicB: 2, scales on Pinus strobus, natural size, leaves stunted; 2«, leaves of P. strobus not stunted by scale insects; -zb, scale of female, usual form, enlarged ; 2c, scale of female, wide form, enlar^jed ; 2^, scale of male en- larged, twigs of a tree for a few days, the young scale insect settles upon a suitable place and immediately begins to excrete a cottony substance which soon becomes compacted into a thin pellicle covering the body. As the insect grows and needs to shed its skin, this cast skin is joined to the excretion and forms a part of the scale. This is the bright-colored, Jiipple-like prominence, seen in the centre of the Pernicious. 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
