. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 96 THE IJEPOHT OF THE X( Id Bud Moth (Eucosma ocdlana). This species was somewhat more abiuidant than usual, especially in ?<oi'L'olk County. Leaf Blister ]Mite [Erioplnjcs pijvl). This well-known pest has Toi- several years been held in check hy unknown natural factors, but during the past two years it has increased to a very marked extent in many orchards wliicli have not been receiving the so-called dormant application of lime-sulphur. The present indications are that the blister mite w
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 96 THE IJEPOHT OF THE X( Id Bud Moth (Eucosma ocdlana). This species was somewhat more abiuidant than usual, especially in ?<oi'L'olk County. Leaf Blister ]Mite [Erioplnjcs pijvl). This well-known pest has Toi- several years been held in check hy unknown natural factors, but during the past two years it has increased to a very marked extent in many orchards wliicli have not been receiving the so-called dormant application of lime-sulphur. The present indications are that the blister mite will again have to be reckoned M-ith as a first-class orchard pest. The Mullein Leaf Bug {Cainpijlonia verhasci). A small mirid,* which occurs throughout the Province on mullein, catnip, potatoes and several other plants, was found attacking apples this year in two orchards in Norfolk County. Baldwin. Eoxbury IJusset and Spy were freely attacked and on a few of the in- fested trees 75 per cent or more of the apples were more or less injured by the bugs feeding on them. It Avas not uncommon to see one to seven ol" the liille green nymi)hs on a single Fig. 2.—Mullein Leaf Bug injury on mature apples. Conspicuous brown or sometimes blackish corky warts formed at the spots where the punctures were made. In most cases there was only one or two such scars to an apple; in others a ring of them almost encircled the ai)])le: and in others several, close together on the one side, caused the fruit to be lopsided. All the puncturing was done by the nymphs while the ap])les were still small —not more than one-half to two-thirds of an inch in diameter. (According to our observations, the adults do not attack the fruit but they do feed very freely upon the leaves and wood of tlu' new growth, and are specially fond of the water- sprouts.) The nvmphs are light given in t'olor and are very small, being, even in the last ; only about 2 mm. in length. The adults vary in
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
