Insects injurious to fruits . rt 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 ohlongifoUa De Geer, which is also saidto deposit eggs on grape-twigs. No. 166.~The Trumpet Grape-gal
Insects injurious to fruits . rt 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 ohlongifoUa De Geer, which is also saidto deposit eggs on grape-twigs. No. 166.~The Trumpet Grape-gall. Vitis viticola Osten Sacken. These are curious, elongated, conical galls, about one-third of an inch long, ofa reddish or red-dish-crimson color,sometimes inclin-ing to green, grow-ing in considerableIiL numbers on the, leaves of the (See Fig. 303.)Though usuallyfound only on theu]iper surface, theyare occasionallyseen on the underside also. They areproduced by a gall-gnat, an undetermined species of Ceddo- Fig. ATTACKING THE LEAVES. 293 mi/ia, 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 transforni to the pupa, and that the flyis produced the following season. No. 167.—The Grape-vine Filbert-gall. Vitls coryloides AValsh & .Riley. In this instance a rounded mass of galls from one and alialf to two and a half inches in diameter springs from acommon centre at a point v/here a bud would naturally befound. The mass (see Fig. 304) is composed of from ten to Fia. .304.
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