. Insect pests and plant diseases : containing remedies and suggestions recommended for adoption by farmers, fruit-growers, and gardeners of the province . Pests; Fungal diseases of plants; Insect pests. 18 Provincial Board of Horticqlture. 1897. a \ ^^f'^ (Fig. 3.) Young larvae and developing scale ; (a), ventral view of larva showing sucking beak with setse separated with enlarged tarsal claw at right; (6), dorsal view of same somewhat contracted, with the first waxy filaments appearing; (c), dorsal and lateral view of same still more contracted, illustrating further development of wax secre
. Insect pests and plant diseases : containing remedies and suggestions recommended for adoption by farmers, fruit-growers, and gardeners of the province . Pests; Fungal diseases of plants; Insect pests. 18 Provincial Board of Horticqlture. 1897. a \ ^^f'^ (Fig. 3.) Young larvae and developing scale ; (a), ventral view of larva showing sucking beak with setse separated with enlarged tarsal claw at right; (6), dorsal view of same somewhat contracted, with the first waxy filaments appearing; (c), dorsal and lateral view of same still more contracted, illustrating further development of wax secretion ; (d), later stage of same, dorsal and lateral views, showing matting of wax secretions and first form of young scaleâall greatly enlarged. (L. 0. Howavd and G. L. Marlatt, BvUetin No. 3, New Series, Division of Entomology, U. 8. Department of Agriculture.) " There are two points of interest" and importance to be noted in this life history. The first is, that the insect passes the winter beneath the scales in a partly grown condition Some Usually they are about lialf grown ; but some will be younger and some will Characteristics. ^ °^*^°''- '^^'^^ f^? *° continue reproduction until the tree is entirely dormant, and no further food is obtainable. On the other hand they do not seem to renew growth very early in spring, but are slow to begin reproduction â no larvae being noted until June. The second point is, that once they begin there is practically no period during the summer at which the young, active crawling lice are not to be found upon the tree. The length of time during which a given female will continue to reproduce has not been ascertained; but it seems likely from what has been observed that breeding continues tor quite a long time, and that the female scales that have lived during the winte? may con tinue to live on and reproduce during the greatest portion of the summer, when their daughters and grand-daughters are already full grown, with n
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsectpests, bookyear
