Insect Hotline Issue 11

roseslug sawfly closeup

Close-up of roseslug sawfly larva.

roseslug sawfly damage 2

Roseslug sawfly damage called ‘window-paning’.  The leaf epidermis becomes ‘frosted’ as leaf dries out from feeding on underside of leaf.

roseslug sawfly damage

‘Window-paning’ damage on Knock-out Roses caused by roseslug sawflies.

roseslug sawfly n damage

Underside of rose leaf with damage caused by roseslug sawfly.  Larva is feeding on leaf.  All photos provided by Brian Kunkel, University of Delaware

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