. The grapecane gall-maker and the grapecane girdler. es to the adultinsect. PULL LIFE CYCLE. One individual was kept under close observation from eggto adult and all the changes of transformation noted. Theegg was laid on May nineteenth, egg hatched May twenty-ninth,larva pupated July second, adult appeared July fourteenth. Thisindividual was more precocious, however, than several othersthat were watched less closely and it can hardly be consideredas a fair example with which to illustrate the life cycle ofthe species. The period occupied by its transformation wasonly fifty-six days, whereas,
. The grapecane gall-maker and the grapecane girdler. es to the adultinsect. PULL LIFE CYCLE. One individual was kept under close observation from eggto adult and all the changes of transformation noted. Theegg was laid on May nineteenth, egg hatched May twenty-ninth,larva pupated July second, adult appeared July fourteenth. Thisindividual was more precocious, however, than several othersthat were watched less closely and it can hardly be consideredas a fair example with which to illustrate the life cycle ofthe species. The period occupied by its transformation wasonly fifty-six days, whereas, from sixty-five to seventy dayswas the average period for the transformation of the othersnoted. Most of the pupae change to adults early in beetles remain for some time in the chambers where theyhave developed and then work their way out and escape. Thatthey pass the winter in the beetle stage there is no doubt, buttheir place of hibernation was not found. Most likely they hideaway, like the gall-maker, among fallen leaves or in rubbish. Photographs showing adult Grapecane Girdler resting on vineand injury done to tips of canes. Natural size. 339 iitapi, old bLuinps, about fences or in shckercd places in the WOOGt. NATURAl, ENEMIES. Reference has been made to a mite that entered the egg-chambers of the beetle when they were opened and destroyedthe eggs. iSpecniiens of this mite were collected and forwardedLo VVashington where they were determined as Tyroglyphiiscocciphilus Banks, a species that has been known to feed onscale insects. I believe that this, or a similar mite, sometimesfinds its way into the undisturbed ?gg-chambers of both thegrapecane girdler and the grapecane gall-maker and destroysthe eggs. I have found in fresh wounds in the canes the emptyegg-shells of the beetles which had every appearance of havinguetn attacked by the mites. Two species of hymenopterous parasites were found at-tacking the larvae of the girdler as it burrowed in the sp
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