. Manual of fruit insects. he blossom few enter at the stem endand a considerable numbercommence their burrowswhere a leaf or another appletouches the surface of thefruit. In the case of latergenerations a much greaterproportion of the larvae en-FiG. 11. — Full-growii codiin-moth ter at the side, a fact of greatI rvS /jJ^^ ^^^^ ^ practical importance. After t-^^sgding slightly in the calyx cup the larva burrows directly toV^ core, where it_devours the seeds and eats out a considerable^ cavity, leaving it partially filled with a filthy mass of excrement^ loosely webbed together with
. Manual of fruit insects. he blossom few enter at the stem endand a considerable numbercommence their burrowswhere a leaf or another appletouches the surface of thefruit. In the case of latergenerations a much greaterproportion of the larvae en-FiG. 11. — Full-growii codiin-moth ter at the side, a fact of greatI rvS /jJ^^ ^^^^ ^ practical importance. After t-^^sgding slightly in the calyx cup the larva burrows directly toV^ core, where it_devours the seeds and eats out a considerable^ cavity, leaving it partially filled with a filthy mass of excrement^ loosely webbed together with silk (Fig. 12). Larvae of later generations entering at the side frequently eat out a small bur-row or cavity just beneath the skin before starting the burrowtowards the core. When nearly full grown the larva eats out a new burrowdirectly to the surface but keeps the opening plugged with ex-crement until it is ready to leave the fruit (Fig. 14). The timespent in the fruit varies considerably, but averages not far from. APPLE INSECTS 15 3Q-days for the first brood and 3 weeks for the second. Thefull grown larvaTs abouFYTnch in length, pinkish white in color,with the head dark brown and the thoracic and anal shieldslighter brown (Fig. 11). The larger part of the larvse leave the fruit before it falls andcrawl down the branches until they find a suitable place forspinning the cocoon. After making the cocoon the larva maydo one of two things, either it will remain in the larval conditionuntil the following spring or it may change to a pupa in abouta week. In the lattercase these summer pupae ^ give rise in about 10 daysto a brood of moths \vhiiihlay the eggs for the second _^enerationr In N^ewYork only part of thelaryaBjpinning up before (^August i) transform thesame season, all the larvagoing into cocoons afterthat date hibernate. InArkansas the correspond-ing date is September all the larvae of thefirst broods transform thesame season even inGeorgia, where there are thre
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbenefic, bookyear1915
