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Pine Tube Moths

Characteristics:

  • Eggs: Females lay eggs on needles.
  • Larvae: After hatching, pale green larvae feed on the needle tips. The larvae protect themselves by spinning a soft white silk web around 5 to 20 needles to create a tube. The first generation of larvae are full grown by mid-June, while the second generation of larvae appear in mid-July.
  • Pupae: After maturing, larvae pupate to over winter and emerge as adults in the spring.
  • Adults: Adult moths appear in May and have a grey to tan bodies. Their forewings are reddish-orange with white oblique lines and smoky-coloured hindwings.

Identifying infestations:

  • Silken needle tubes: Larvae create tubes where they feed by spinning white silken threads around 5 to 20 needles.

IPM Toolkit:

  • Preventive tools:
    • Follow a regular watering, fertilizing, and pruning schedule to keep your trees as healthy as possible to resist attack.
  • Physical tools:
    • Prune infested tips where silk tubes appear.
  • Biological tools: Not applicable
  • Least toxic chemical tools: Not applicable