Insects injurious to fruits . insert its eggs freely intopieces of cork and other soft substances. The young katy-dids when hatched, which usually occurs in the followingspring, eat almost any tender succulent leaves, and have neverbeen recorded as very injurious. The males are furnishedwith a pair of musical organs, which they use vigorously asnight approaches, and their sharp, shrill notes can be heardat a long distance. Another and a very similar species is the Oblong-wingedKatydid, Phylloptera oblongifolia De Geer, which is also saidto deposit eggs on grape-twigs. No. 166.—The Trumpet Grap
Insects injurious to fruits . insert its eggs freely intopieces of cork and other soft substances. The young katy-dids when hatched, which usually occurs in the followingspring, eat almost any tender succulent leaves, and have neverbeen recorded as very injurious. The males are furnishedwith a pair of musical organs, which they use vigorously asnight approaches, and their sharp, shrill notes can be heardat a long distance. Another and a very similar species is the Oblong-wingedKatydid, Phylloptera oblongifolia De Geer, which is also saidto deposit eggs on grape-twigs. No. 166.—The Trumpet Grape-gall. Vitis vitlcola Osten Sacken. These are curious, elongated, conical galls, about one-third Fig. 303. ^^ ^^ ^^^ ^g °^ a reddish or red-dish-crimson color,sometimes inclin-ing to green, grow-ing in considerablenumbers on theloaves of the vine.(See Fig. 303.)Though usuallyfound only on theuj)per surface, theyare occasionallyseen on the underside also. They areproduced by a gall-gnat, an undetermined species of Cecido-. ATTACKING THE LEAVES. 293 myia, and on cutting into the galls they are found to be hollow,each containing a pale-orange larva. It is probable that thelarva enters the earth to ttansform to the pupa, and that the flyis produced the following season. No. 167.—The Grape-vine Filbert-gall. Vitis coryloides Walsh & Riley. In this instance a rounded mass of galls from one and ahalf to two and a half inches in diameter springs from acommon centre at a point where a bud would naturally befound. The mass (see Fig. 304) is composed of from ten to Fig. 304.
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Keywords: ., bookauthorsaunderswilliam183619, bookcentury1800, bookdecade1880
