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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Poplar > Leaves webbed together

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Poplar > Leaves > Leaves webbed together

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  • Image: Large aspen tortrix 1
  • Image: Large aspen tortrix 2

Large aspen tortrix
Choristoneura conflictana

  • Skeletonized leaves are webbed or rolled together in spring
  • Larvae first drill holes into leaf buds causing holes in leaves
  • In early summer, canopy becomes sparse due to consumed and smaller leaves
  • Larvae are nearly black in color, approximately 3/4 inch long with a black head
  • Quaking aspen is preferred host
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  • Image: Poplar tent maker 1
  • Image: Poplar tent maker 2
  • Image: Poplar tent maker 3

Poplar tent maker
Clostera inclusa

  • Leaves strung loosely together with webbing or silk
  • Chews entire sections of leaves
  • When fully grown, larvae are up to 1 3/15 inch long; four yellow stripes down center of body with yellow lines along side opposite of black lines
  • Damage occurs during spring with a second generation occurring in late summer
  • More information on Poplar tent maker

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