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Beginner

This pest affects:

Scientific Name
Argyrotaenia velutinana (Red-banded leafroller)
Platynota flavedana (Variegated leafroller)
Archips argyrospila (Fruit tree leafroller)
Malacosoma americanum (Eastern tent caterpillar)
Malacosoma disstria (Forest tent caterpillar)
Spilonota ocellana (Eye-spotted bud moth)
Lymantria dispar (Gypsy moth)

Identification
Leafrollers - Leafrollers also feed on blossoms and developing fruitlets. Early season feeding causes large corky scars and indentations on the fruit - which often drops prematurely. For more details go to Apple IPM.

Eye-spotted bud moth - Feeding injury is characterized by tiny, shallow, circular excavations on the fruit surface, similar to injury from summer generation obliquebanded leafroller. For more details go to Apple IPM.

Tent caterpillars - Eastern tent caterpillars build a single large tent that is occupied through the whole larval stage. Forest tent caterpillars do not build tents, but aggregate on silken mats that they spin on the leaves or bark of trees. One colony can strip the leaves of whole branches. Fruitlets on these branches fail to develop. There is only one generation per year. For more details go to Apple IPM.

Gypsy moth- Larvae chew on the leaves, leaving small holes referred to as shothole feeding on the leaf. When not feeding, they rest on a mat of silk they make on the underside of the leaf. For more details go to Apple IPM.

Period of Activity
Bud break through petal fall.

Scouting Notes
Spring-feeding caterpillars feed on a wide variety of deciduous trees and shrubs, herbaceous plants and brambles. They are most often detected in trees at the perimeter of the orchard adjacent to alternative hosts, particularly bush areas.

Threshold
None – This is a pest of low impact with rare exceptions.

Advanced

This pest affects:

Scientific Name
Argyrotaenia velutinana (Red-banded leafroller)
Platynota flavedana (Variegated leafroller)
Archips argyrospila (Fruit tree leafroller)
Malacosoma americanum (Eastern tent caterpillar)
Malacosoma disstria (Forest tent caterpillar)
Spilonota ocellana (Eye-spotted bud moth)
Lymantria dispar (Gypsy moth)

Identification
Leafrollers - Leafrollers also feed on blossoms and developing fruitlets. Early season feeding causes large corky scars and indentations on the fruit - which often drops prematurely. For more details go to Apple IPM.

Eye-spotted bud moth - Feeding injury is characterized by tiny, shallow, circular excavations on the fruit surface, similar to injury from summer generation obliquebanded leafroller. For more details go to Apple IPM.

Tent caterpillars - Eastern tent caterpillars build a single large tent that is occupied through the whole larval stage. Forest tent caterpillars do not build tents, but aggregate on silken mats that they spin on the leaves or bark of trees. One colony can strip the leaves of whole branches. Fruitlets on these branches fail to develop. There is only one generation per year. For more details go to Apple IPM.

Gypsy moth- Larvae chew on the leaves, leaving small holes referred to as shothole feeding on the leaf. When not feeding, they rest on a mat of silk they make on the underside of the leaf. For more details go to Apple IPM.

Period of Activity
Bud break through petal fall.

Scouting Notes
Spring-feeding caterpillars feed on a wide variety of deciduous trees and shrubs, herbaceous plants and brambles. They are most often detected in trees at the perimeter of the orchard adjacent to alternative hosts, particularly bush areas.

Threshold
None – This is a pest of low impact with rare exceptions.

Management Notes
Products applied for control of first generation Oriental fruit moth and plum curculio may control spring feeding caterpillars.