The California fruits and how to grow them; . ng thecolonies in place with a torch on the end of a pole, or by sprayingthe foliage with lead arsenate or -Paris green. The pest can bereduced while pruning by carefully collecting and burning the eggclusters, which encircle the twig. Red-Humped Caterpillar.—Striped caterpillars, not hairy, buthaving two rows of black spines along the back, also living inclusters; of reddish color with yellow and white lines; a short dis-tance back of the red head of the caterpillar is a red hump on whichare four black spines; black spines are also scattered over
The California fruits and how to grow them; . ng thecolonies in place with a torch on the end of a pole, or by sprayingthe foliage with lead arsenate or -Paris green. The pest can bereduced while pruning by carefully collecting and burning the eggclusters, which encircle the twig. Red-Humped Caterpillar.—Striped caterpillars, not hairy, buthaving two rows of black spines along the back, also living inclusters; of reddish color with yellow and white lines; a short dis-tance back of the red head of the caterpillar is a red hump on whichare four black spines; black spines are also scattered over the body,but smaller than those on the back. Spra)^ with lead arsenate orParis green, or cut off and burn colonies. Caterpillar of Tussock Moth.—A conspicuous caterpillar withfour short, brush-like tufts on its back, and two long, black plumesat the front, and one at the rear of the body—see engraving. Thisleaf-eater is found on apple, pear, plum, and sometimes on otherfruit trees, also on the walnut and oak. The caterpillars are pecu-. The tussock-moth larva, the so-called horned caterpillar. (Somewhat enlarged.) liarly resistant to arsenical sprays and can not be successfully con-trolled by these. The larva spins a cocoon sometimes in the foldof a leaf, more commonly in crotches or rough places on the bark,or even on adjacent buildings or fences, and the female, afteremerging from the cocoon, deposits her eggs upon the outside ofit. The engravings show caterpillars and their peculiar insect is fortunately very freely parasitized in the egg form andprevented from wide injury. It can be controlled by destroying theegg masses during pruning, as they are white and very conspic-uous.* *See Bulletin 183, University of California, College of Ag-rieulture. SLUGS AND BEETLES 553 Pear and Cherry Slug.—A small, slimy, dark-colored worm, withthe fore part of the body notably larger than the rear part, eatingthe upper surface of the leaves but not usually making holes
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfruitculture, bookyea
