Diagnosis Case: Oak
|Shothole damage on oak may be caused by Spring cankerworm (Paleacrita vernata) and Fall cankerworm (Alsophila pometaria). Although shothole damage could be gypsy moth, it is a quarantined pest and any reports of Gypsy Moth should be reported to the MDA.|
Older Gypsy moth larvae showing five pairs of raised blue spots and six pairs of raised brick-red spots.
Times to look for shothole damage: Gypsy moth shot hole damage is best detected in May. Shot holes are created by cankerworms in late April.
|(Photo courtesy USDA Forest Service)|
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