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Oak
trees produced a banner crop of acorns this year. Close
inspection may reveal acorns with tiny holes the size of pencil points.
These
are exit holes from acorn weevil larvae. A female acorn weevil drills
a hole in a developing nut with her long snout and deposits eggs inside
the shell. Larvae (small whitish grubs) hatch and eat the acorn meat.
After the nut falls, larvae drill out and burrow into the soil, where
they spend the winter as pupae.
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