. Some insects injurious to garden and orchard crops : a series of articles dealing with insects of this class. g of the abdomen are indicated in the illustration. The length of the body when the nymph is first hatched is a trifleless than ,7 which becomes just prior to the first molt about 3mm orthe same length as the next stage immediately after the molt. Just before each molt the nymph becomes stouter, the abdomen verymuch rounded as if swollen, aud the color lighter. Second stage (fig. 4, b).—After the first molt the abdomen becomes alight pruinose gray and the tubercles and all marki
. Some insects injurious to garden and orchard crops : a series of articles dealing with insects of this class. g of the abdomen are indicated in the illustration. The length of the body when the nymph is first hatched is a trifleless than ,7 which becomes just prior to the first molt about 3mm orthe same length as the next stage immediately after the molt. Just before each molt the nymph becomes stouter, the abdomen verymuch rounded as if swollen, aud the color lighter. Second stage (fig. 4, b).—After the first molt the abdomen becomes alight pruinose gray and the tubercles and all markings become morepronouuced and conspicuous ; the head loses somewhat its triangu-lar appearance, the eyes show more prominently at the sides, and thethird joint of the antennae isnoticeably largest. The tho-racic portion is now compar-atively smaller and lighterin color. Immediately beforemolting the abdomen be-comes very much enlarged,as though swollen, the colorturns nearly uniform lighterpruinose gray, looking almostwhite, and the sutures of theupper surface of the head arenearly invisible. Length Fig4. -Anasa tristis nymphs: when first molted, a little stage; c, third stage; d, fourth stageahout twice natural size (original). newly hatched; b, secondfifth stage—all more than 3u. Third stage (fig. 4, c).—After the second molt the larva has changedbut slightly except in size and in the darker color of the body. The legsand antennae have increased in length, maintaining the same relationto the body as at the first day of the preceding stages ; in other words,the third larval stage is a nearly exact counterpart on the day of molt-ing of the second larval stage on the same day in its before molting, however, it undergoes considerable change,presenting the appearance shown in the illustration. Length, about 4mm. Fourth stage (fig. 4, d).—In the stages previously described the scale-like process which represents the wing-pad of the fifth or last nymp
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashingtondcusdept
