european snout beetle
Beginner
Scientific Name
Phyllobius oblongus L.
Identification
- Adults:
- Shiny, smooth, brown weevils,
- 4-7 mm (¼ inch) long,
- Covered in small hairs.
- Damage:
- Notches in the leaf margins,
- Round circular holes on the leaves of apple trees.
Often Confused With
Spring feeding caterpillar damage
Period of Activity
Weevils emerge in the spring (May thru June) and begin feeding. Generally they disappear from orchards shortly after petal fall.
Scouting Notes
Look for notches in the leaf margins and round circular holes on the leaves of apple trees from bloom through petal fall. This is a sporadic pest and is not an issue in orchards in most years.
Thresholds
Leaf feeding is not enough of a concern in most commercial orchards to justify a spray. Generally petal fall insecticide applications for other pests (such as plum curculio), will provide adequate control of this insect.
Advanced
Scientific Name
Phyllobius oblongus L.
Identification
The adults are shiny, smooth, brown weevils (4-7 mm, ¼ inch long) that are covered in small hairs. Damage includes notches in the leaf margins and round circular holes on the leaves of apple trees.
Often Confused With
Damage can be confused with spring feeding caterpillar damage.
Biology
These beetles overwinter as mature larvae in the soil beneath host plants. The adult weevils emerge in the spring (May thru June), and begin feeding on the leaf margins and chewing semi-circles in the leaves.
Period of Activity
Weevils emerge in the spring (May thru June) and begin feeding. Generally they disappear from orchards shortly after petal fall.
Scouting Notes
Look for notches in the leaf margins and round circular holes on the leaves of apple trees from bloom through petal fall. This is a sporadic pest and is not an issue in orchards in most years.
Thresholds
Leaf feeding is not enough of a concern in most commercial orchards to justify a spray. Generally petal fall insecticide applications for other pests (such as plum curculio), will provide adequate control of this insect.
Management Notes
- European snout beetles are rarely of economic concern.
