. Manual of fruit insects. RY, BLACKBERRY AND DEWBERRY INSECTS 331 dry rot sets in at the girdled point and the whole shoot usuallydries up and dies. After checking the growth in May the maggot proceeds toburrow downward in the pith, usually reaching the base nearthe surface of the ground some time in June. In late Juneand early July the maggots, without leaving their burrows,transform to pupaewithin the hard-ened dark brownlarval skin or pu-parium. Theadult, however,does not emergetill the followingApril, there beingbut one brood ayear. Control. With a littlewatchfulness thisraspberry pest ca
. Manual of fruit insects. RY, BLACKBERRY AND DEWBERRY INSECTS 331 dry rot sets in at the girdled point and the whole shoot usuallydries up and dies. After checking the growth in May the maggot proceeds toburrow downward in the pith, usually reaching the base nearthe surface of the ground some time in June. In late Juneand early July the maggots, without leaving their burrows,transform to pupaewithin the hard-ened dark brownlarval skin or pu-parium. Theadult, however,does not emergetill the followingApril, there beingbut one brood ayear. Control. With a littlewatchfulness thisraspberry pest canbe easily checked. Its presence can be quickly detected in May, as its work is thenvery conspicuous. The remedy is simple. As soon as a droop-ing tip is seen, either pull .up the shoot or cut it off severalinches below the girdle and burn it. This method faithfullycarried out throughout May will quickly check the is no possible chance of getting at the insect with aspray. Simply burn all infested shoots in Fig. 289. Raspberry shoots girdledmaggots. by the cane- References Cornell Agr. Exp. Sta. Bull. 126, pp. Agr. Exp. Sta. Bull. 62. 1904. 1897, 332 FBUIT IXSECTS The Red-necked Cane-borer Fig. 290. —Beetle of the red-necked cane-borer (x2f). Agrilus ruficoUis Fabriclus The new canes of blackberry, dewberry and raspberrj^ areoften injured by the larva of a beetle which causes irregular swellings or galls from fone to three inchesin length. Thesegalls are gradual en-largements of thecane and are char- acterized by a longi-tudinal splitting ofthe bark (Fig. 293).Infested canes eitherdie or are so weak-ened as to prevent the develop-ment of the fruit. The parent beetle (Fig. 290) isabout ^ inch in length; the -uing-covers are black with a dull bluishreflection, and the thorax or neckis metallic coppery, reddish or brassy;the head is black with metaUic re-flections. The beetles may be found on the berry bushes on bright days from the last of Maytill A
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbenefic, bookyear1915
