European leafroller

Archips rosanus

Apple, pear, hawthorn, cherry, currant and privet are the primary hosts of the European leafroller. In Oregon, it is a pest of filberts and is known as the filbert leafroller. It originated in Europe and was introduced to North America in the 19th century. It colonized two separate areas of North America - the Northeast and the Northwest. It is a pest of tree fruits in British Columbia, Washington and Oregon.
Egg. The egg is the overwintering stage of the fruittree and European leafrollers. Eggs are laid on the bark of the tree trunk or limbs in irregular flat masses. They are covered with a whitish or grayish gelatinous substance. When first laid they are light brown, later turning to dark brown. By spring, egg masses have bleached to a light gray.
Larva. It is difficult to identify the species of young leafroller larvae, especially in the spring. All have green bodies but the head capsule and thoracic shield (the segment just behind the head capsule may range from light brown to black.
The mature European leafroller has a green body, light to dark brown head and a greenish brown to dark brown thoracic shield. Larvae should be reared to the adult stage to confirm species identity.
Pupa. The leafroller pupa is a typical moth chrysalis. It is light green or greenish brown at first, but soon turns tan and then a darker brown. The pupa develops in a protected place, usually in a folded and webbed leaf. It may be surrounded with light silken webbing, though it does not have a dense silken cocoon. Pupae of all leafrollers look the same. To identify them, keep them in a container until the moth appears.
Adult. The European leafroller about the same size as the fruittree leafroller. It is a chocolate brown color and is darker than the other leafrollers. A distinct dark band runs diagonally across the wing with a dark patch near the base and outer tip in the male. The female has a less distinctive banding pattern.

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