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Mystery Cherry Tree Pest

Posted by santamonicagardener 10 (My Page) on
Fri, May 31, 13 at 22:36

I have found these "worms" eating lacy holes in my first year Royal Lee and Minnie Royal cherry trees. Can anyone help me to identify. They are from 1/8th to over 1/2 inch long, dark and wet looking , like a slug, but move in an inch worm motion when disturbed.
I am in So Cal, and I have never seen these things on any other plants in my garden, and they are not on the plum or peach trees, just the two cherries. HMMM?

Follow-Up Postings:

RE: Mystery Cherry Tree Pest

Sawfly larva.

Note that this same type of insect larva was pictured on the forum on May 25 eating quince leaves.

RE: Mystery Cherry Tree Pest

That's probably an Arion ater slug.

RE: Mystery Cherry Tree Pest

Arion ater slug more likely to be found on the ground, becomes very large; sawfly larva are commonly found in trees, stay small.

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