. Manual of fruit insects. n themines are so nu-merous as to in-volve much of theleaf, which curlsand finally drops 2 ^mm^ or 3 weeks earlier Fig. 75. — The trumpet leaf-miner moth (X 10). than usual, thus preventing the full development of the fruit and reducingthe vitality of the tree. Sixty-eight caterpillars have beenfound working on a single leaf. On large trees, the foliageon the higher branches is usually more seriously infested. The favorite food-plant of this native leaf-miner is the culti-vated apple, but it also breeds on native crab and haw trumpet-shaped m
. Manual of fruit insects. n themines are so nu-merous as to in-volve much of theleaf, which curlsand finally drops 2 ^mm^ or 3 weeks earlier Fig. 75. — The trumpet leaf-miner moth (X 10). than usual, thus preventing the full development of the fruit and reducingthe vitality of the tree. Sixty-eight caterpillars have beenfound working on a single leaf. On large trees, the foliageon the higher branches is usually more seriously infested. The favorite food-plant of this native leaf-miner is the culti-vated apple, but it also breeds on native crab and haw trumpet-shaped mines in the leaves of blackberry andraspberry usually attributed to this insect are now consideredto be the work of two other species, the Tischeria oenea androseticola of Frey and Boll. At least half a dozen tiny hymenopterous parasites destroymany of these miners, thus doing much to prevent the insectfrom increasing to destructive numbers. Remedial treatment. As this insect hibernates on the fallen leaves, many of them. 72 FRUIT INSECTS can be destroyed by plowing infested orchards either in latefall or early spring. Thoroughly cultivated orchards willrarely suffer serious injury from this miner. Experimentsindicate that many of the larvae and pupse can be killed in themines by thorough, applications of 10 or 15 per cent kerosenelime emulsion. Just as effective work with less danger of in-juring the foliage could doubtless be done with Black Leaf40 tobacco extract, one pint in 100 gallons of water, adding 4pounds of soap to each 100 gallons to make the liquid stick andspread better. Rkferences Brunn, Cornell Univ. Exp. Sta., Second Rept., pp. , 4th Rept. State Ent. 111., pp. 45-50. (Storrs) Agr. Exp. Sta. Bull. 45. S. Bur. Ent. Bull. 68, Pt. 111. Agr. Exp. Sta. Bull. 87, pp. 3-9. 1910. 1883. Some Lesser Leaf-miners of the Apple The following four species of small caterpillars work asminers in the leaves of apple, and while often nu
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