Apple Ermine Moth Lure
Latin Name: Yponomeuta malinellus (Zeller)
Lure: Red Rubber Septum
Lure Active Ingredient: Z-9-12Ac and Z-11-14OH
Field Life: 30 days
Trap to Use: Red Paper or Plastic Delta Trap, or Wing Trap
Monitoring Strategy: Bait traps with sex pheromone lure and place shoulder high in apple or crab apple trees. Check every 2 weeks. Check with Cooperative Extension or Master Gardener for local information and recommendations.
Cultural and Physical Control: Cultural control methods include gathering and destruction of falling leaves in summer, removal and burning of web nests with caterpillars and pupae.
Distribution: Native to central and southern portions of Western Europe. It has been introduced to central Asia and has been detected in North America (Washington State).
Hosts: Apple, crabapple
Description: Adult moth: Silvery-white forewings with small black spots, about 19 mm in length.
Larvae: Gray to light green or cream in color. About 19 mm long at maturity.
Eggs: Yellow, changing to red then to gray.
Life Cycle: The larvae overwinter underneath egg masses that the females deposited on tree bark the previous summer. Larvae emerge in early spring and move to nearby leaves. The larvae continue feeding in this fashion until June, when they pupate. Pupating caterpillars line themselves up neatly in tightly packed clusters. Adult moths begin to emerge in June, and females lay eggs from July into September.
Latin Name: Yponomeuta malinellus (Zeller)
Lure: Red Rubber Septum
Lure Active Ingredient: Z-9-12Ac and Z-11-14OH
Field Life: 30 days
Trap to Use: Red Paper or Plastic Delta Trap, or Wing Trap
Monitoring Strategy: Bait traps with sex pheromone lure and place shoulder high in apple or crab apple trees. Check every 2 weeks. Check with Cooperative Extension or Master Gardener for local information and recommendations.
Cultural and Physical Control: Cultural control methods include gathering and destruction of falling leaves in summer, removal and burning of web nests with caterpillars and pupae.
Distribution: Native to central and southern portions of Western Europe. It has been introduced to central Asia and has been detected in North America (Washington State).
Hosts: Apple, crabapple
Description: Adult moth: Silvery-white forewings with small black spots, about 19 mm in length.
Larvae: Gray to light green or cream in color. About 19 mm long at maturity.
Eggs: Yellow, changing to red then to gray.
Life Cycle: The larvae overwinter underneath egg masses that the females deposited on tree bark the previous summer. Larvae emerge in early spring and move to nearby leaves. The larvae continue feeding in this fashion until June, when they pupate. Pupating caterpillars line themselves up neatly in tightly packed clusters. Adult moths begin to emerge in June, and females lay eggs from July into September.