. Some insects injurious to garden and orchard crops : a series of articles dealing with insects of this class. ffer-ences between arcuata and fusca are broughtout in the illustrations of their sexual charac-ters (figs. 17 and 18). The egg.—The eggs of Laehnosterna are ovalwhen first deposited, but in their growth swellby absorption, as has been pointed out byDr. Forbes, to a larger size, becoming just be-fore hatching more broadly oval or nearlyspherical. The eggs are subject to consider-able variation in form and outline. Eggs ofL. arcuata, just about to hatch, vary in widthfrom 2 to 2Jmm, a
. Some insects injurious to garden and orchard crops : a series of articles dealing with insects of this class. ffer-ences between arcuata and fusca are broughtout in the illustrations of their sexual charac-ters (figs. 17 and 18). The egg.—The eggs of Laehnosterna are ovalwhen first deposited, but in their growth swellby absorption, as has been pointed out byDr. Forbes, to a larger size, becoming just be-fore hatching more broadly oval or nearlyspherical. The eggs are subject to consider-able variation in form and outline. Eggs ofL. arcuata, just about to hatch, vary in widthfrom 2 to 2Jmm, and in length from 2J to newly laid they are nearly white andrather moderately polished, but with their growth they become darkerand subopaque. The surface is apparently smooth and without sculp-ture. In consistency the eggs are quite firm, strong, and elastic. Anegg is shown in outline, about three times the natural size, at c, fig. of the eggs of Laehnosterna of different species withthose of Euphoria and Ligyrus shows a very close agreement in shape,color, and general Fig. 18.—Laehnosterna fusca: a,male claspers, from front; b,right clasper; c, left clasper; characters of male; e,genital structure of female—allenlarged (adapted from Smith inInsect Life). 76 INSECTS INJURIOUS TO GARDEN AND ORCHARD CROPS. The newly hatched larva.—The larvae when first hatched have theappearance shown in the illustration at d. From the first they rest inthe curved position assumed by the embryo in the egg, and when theyattempt to move they do so chiefly by crawling in a clumsy mannerupon their venters, and not upon their backs as is the case with Allo-rhiua and certain other Scarabaeidae. The newly-hatched larva3, aswould readily be surmised from the variability in the size of the fullydeveloped eggs, vary in size even before they have partaken of food,measuring, if extended, from 6 to 7mm in length and about 2mm acrossthe thoracic segments,
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