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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Ribes > Holes and sawdust at base of stems

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Ribes > Stems/branches > Holes and sawdust at base of stems

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Currant Borer
Synanthedon tipuliformis

  • Stems wilt and dieback; may break off
  • Holes and sawdust may be found near base of stems
  • Pupal skins protrude from holes in stems
  • Larvae are white with dark heads
  • Adults are blue-black clearwing moths with yellow band on abdomen
  • More information on Currant Borers

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