Choristoneura rosaceana

Definition

A tortricid moth species native to North America, commonly known as the oblique-banded leafroller or rosaceous leafroller. The larvae are polyphagous leafrollers that feed on a broad range of host plants including rosaceous fruit trees (apple, pear, peach, cherry), berry crops, and many woody ornamentals, making this species a significant agricultural and horticultural pest in temperate regions. Accidental human-mediated introduction has established populations beyond its native range. The species has also served as a model organism for baculovirus and entomopoxvirus research.

Etymology

Latin rosaceana, referring to the Rosaceae family of host plants

Example

Larvae of Choristoneura rosaceana web together leaves or fruit and feed within the shelter, causing direct fruit damage and providing entry points for rot organisms; pheromone monitoring and degree-day models are standard management tools in integrated pest management programs for apple orchards.

Synonyms

• oblique-banded leafroller
• rosaceous leafroller

Related Terms

• Tortricidae
• leafroller
• polyphagy
• Integrated Pest Management
• Choristoneura fumiferana
• baculovirus
• pheromone trap
• degree-day model

Usage Notes

The common name 'oblique-banded leafroller' refers to the adult's wing pattern and distinguishes it from other leafroller species; do not confuse with the spruce budworm (Choristoneura fumiferana), a conifer-feeding congener of major economic importance in North American forestry. The species epithet is sometimes misspelled 'rosaceana' versus 'rosaceana' in older literature; Harris's original 1841 publication established the spelling.