. Culture of the citrus in California . Citrus fruits; Fruit-culture. 254 STATE BOARD OF HORTICULTURE. of the body and lateral margins. The young creep along at first, then settle along the underside of the leaves and on the branches, which they seem to prefer, but after passing through the second or third molt migrate to other parts of the tree. Since the introduction of the Australian ladybirds, Vedalia cardinalis and Novius Koebelei, which devour it, this scale is no longer considered a pest. Treatment.—When spraying is desired, formula No. 1 or No. 3 will be found • Two di
. Culture of the citrus in California . Citrus fruits; Fruit-culture. 254 STATE BOARD OF HORTICULTURE. of the body and lateral margins. The young creep along at first, then settle along the underside of the leaves and on the branches, which they seem to prefer, but after passing through the second or third molt migrate to other parts of the tree. Since the introduction of the Australian ladybirds, Vedalia cardinalis and Novius Koebelei, which devour it, this scale is no longer considered a pest. Treatment.—When spraying is desired, formula No. 1 or No. 3 will be found • Two distinct forms of Cottony Cushion Scale, (.\fter Craw.) Genus DACTYLOPIUS. To this genus belong the insects commonly known as mealy bugs. The antenna; of the female are six-jointed in the larva, and eight-jointed in the adult. The male larva has seven- jointed antennse. The tarsi are furnished with four digitules and the anal ring with six hairs. Mealy Bug {Dactylopius adonidum, Signoret.) (Fig. 1, Plate XXV; Pig. 2, Plate XXVII.) This mealy bug has made its presence felt in some portions of the State. It congregates in large numbers in portions of the tree, especially among the clusters of fruit. Treatment.—This insect is efTectually destroyed bj' the ordi- nary washes used for scale, and by the ladybird Cryptolsemus montrouzieri, lately introduced. This ladybird is as effectual in destroying the mealy bug as the Vedaiia and Novius are in devouring the cottony cushion 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 California. State Board of Horticulture; Lelong, Byron Martin, 1856-1901. Sacramento : State Printing
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