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Grape
cane girdler
Rufus
Isaacs, MSU Entomology |
| Home > Scouting guide> grape cane girdler |
| The grape cane girdler is a black snout beetle. In late spring, the female makes holes encircling the cane and lays her eggs in the holes. She then encircles the cane with anoth-er series of punctures a few inches below the first girdle. The leg-less grub is white with a brown head and feeds in the cane pith between the girdles. After larvae com-plete their development, they pupate. Adults appear in late summer and hibernate over the winter. Injury from this insect has the great-est impact on vines during establishment. |
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| Above left,
white larvae are found near punctures. Above right,
female adult (4 mm) drilling ring of holes into a shoot. |
Girdled shoots
break easily. |
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