Insetti dannosi per i frutti . 50 ; il giallo lanuginoso-bear, n. 146; il py-ramidal vitigno caterpillar. No. 147; la neat strawberryleaf-rullo, No. 193; la cosparse (kgger. No. 194 ; e thecucumber flea-maggiolino, n. 223. IiNSECTS PREGIUDIZIEVOLE PER IL BLACKBERRY. Attaccare le canne. No. 186.-La concisa Gall di Blackberry. Questo curioso gall, che è rappresentato in Fig. 332, è a volte trovato su blackberry canne. Si tratta di circa due o tre centimetri di lunghezza, di un rosso scuro o rosso-browncolor, oblunga in forma,con la sua superficie ONU-anche, con profonda lon-gitudinal solchi,che dividono il gallmore o le

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Insects injurious to fruits . 50 ; the yellow woolly-bear, No. 146; the py-ramidal grape-vine caterpillar. No. 147; the neat strawberryleaf-roller, No. 193; the smeared (kgger. No. 194 ; and thecucumber flea-beetle, No. 223. IiNSECTS INJURIOUS TO THE BLACKBERRY. ATTACKING THE CANES. No. 186.—The Pithy Gall of the Blackberry. This curious gall, which is represented in Fig. 332, is some-times found on blackberry canes. It is about two or three inches long, of a dark-red or reddish-browncolor, oblong in form, with its surface un-even, with deep lon-gitudinal furrows, which divide the gallmore or less com-pletely into four orll five portions. It iscaused by a smallfour-winged fly, Di~astrophus nebulosusOsten Sacken. If atransverse section ofthis gall be made, there will be foundabout the middle anumber of oblong:ells about one-eighthof an inch long, shown at 6 in thefigure, each contain-ing a single larva orTlie larva, which is represented enlarged at c, is aboutone-tenth of an inch long, white, with the mouth parts318. pupa. ATTACKING THE CANES. 319 reddish, and the breathing-pores and an oval spot on eachside behind the head of the same color. The insect usuallyremains in the larval state during tiie greater part of tiiewinter, tlien changes to a pupa {d, Fig. 333), the perfectinsect appearing in spriirj. The fly is about one-twelfth ofan indi long, black, with transparent wings and red feet andantenn£e. Tiiese gall-makers are attacked by parasitic insects, and arealso devoured by birds. No. 187.—The Seed-like Gall of the Blackberry. This is a singular gall, about one-tenth of an inch indiameter, which sometimes occurs in clusters around the canesof the blackberry, covering them with a belt of these seed-like bodies to the depth of an inch or an inch and a half.They are round, of a reddish color, and from many of themarise more or less strong spines, and when cut into, unlessthey have already been emptied by birds, each one will beround to contain a single larva or p

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• bookcentury1900
• bookdecade1900
• bookidin
• booksubjectinsectpests