Archips rosana

Status

ADVENTIVE

PORT INTERCEPT | DOMESTIC SURVEY

Taxonomy

Archips rosana (Linnaeus) (Tortricidae: Tortricinae: Archipini)

Common names: rose tortrix, European leafroller

Synonyms: acerana (Tortrix), ameriana (Tortrix), avellana (Tortrix), hewittana (Cacoecia), laevigana (Tortrix), nebulana (Lozotaenia), obscura (ab.), ochracea (ab.), orientana (var.), oxyacanthana (Tortrix), splendana (var.), variana (Pyralis

Adult Recognition

FWL: 7.0–9.0 mm (male); 8.5–10.5 mm (female)

Forewings are light brown to brown with dark-brown markings that vary in expression. Hindwings are grayish brown with yellowish-orange apical shading. Males have a forewing costal fold.

Male genitalia are characterized by a slender, finger-like uncus; absent socii; and broad, subtriangular, membranous valvae. Female genitalia are characterized by a long, narrow ductus bursae with a cestum; and a moderate, dagger-like signum in the corpus bursae.

Larval Morphology

The following account is summarized from Swatschek (1958)Swatschek (1958):
Swatschek, B. 1958. Die larval systematik der wickler (Tortricidae und Carposinidae) aus dem zoologischen Institut der Universitat Erlangen. Akademie-Verlag, Berlin. 269 pp. [Abhandlungen zur larvalsystematik Insekten 3.].

Last instar larvae are 15–20 mm in length. The abdomen is dull pale green to dark olive green with pale pinacula. The head is reddish brown to dark brown. The greenish-brown prothoracic shield is shaded posteriorly with dark brown to black; the degree of shading varies. Thoracic legs are brown to black.

Similar Species

Some phenotypes of Archips rosana can appear similar to several other Archips species, including A. betulana, A. crataegana, A. grisea, A. oporana, A. podana, and A. xylosteana. Forewing markings in most A. rosana individuals are more subdued than in these other species.

Larvae of A. rosana are similar to those of Adoxophyes orana, Archips podana, and Choristoneura rosaceana.

Distribution

Archips rosana is native to the Palearctic. It was introduced into North America prior to 1890 where it is currently present in the Northeast and Pacific Northwest (as far north as Alaska).

Biology

The following account is summarized from Chapman and Lienk (1971)Chapman and Lienk (1971):
Chapman, P. J., Lienk, S. E. 1971. Tortricid fauna of apple in New York (Lepidoptera: Tortricidae); including an account of apple's occurrence in the state, especially as a naturalized plant. Spec. Publ. Geneva, NY: New York State Agricultural Experiment Station. 122 pp..

Archips rosana completes one generation per year. Adults are present from late June to August.

The life cycle of A. rosana is similar to that of A. argyrospila. Females lay eggs in masses of approximately 60 individual eggs on woody parts of the host plant. Eggs overwinter and larvae hatch the following spring. Larvae feed on leaves, flowers, and small fruits, rolling leaves in later instars. Pupation occurs in the final larval feeding site.

Archips rosana is a pest of fruit trees and other Rosaceae in Europe and the Pacific Northwest. Larvae are polyphagous, feeding on members of more than 15 plant families. Chapman and Lienk (1971)Chapman and Lienk (1971):
Chapman, P. J., Lienk, S. E. 1971. Tortricid fauna of apple in New York (Lepidoptera: Tortricidae); including an account of apple's occurrence in the state, especially as a naturalized plant. Spec. Publ. Geneva, NY: New York State Agricultural Experiment Station. 122 pp. speculate that primary hosts are apple (Malus spp.), currant (Ribes spp.), hawthorn (Crataegus spp.), pear (Pyrus spp.), and privet (Ligustrum spp.).

Plant Associations

View full screen host table here

Links

Additional photos and a distribution map of this species in North America is available at Moth Photographers Group.