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Fig. 1: Male

Fig. 2: Male

Fig. 3: Male

Fig. 4: Female

Fig. 5: Male genitalia

Fig. 6: Female genitalia

Fig. 7: Female sterigma

Fig. 8: Larval variation

Recognition

Diagnostic features

Adults

FWL: 8.1-8.7mm

In California robinsonana adults have three basic phenotypes: 1) forewing uniform brown; 2) forewing with a white basal area and brown outer area; 3) forewing dark blue-gray with a yellow dorsal margin. Males lack a forewing costal fold.

Related or similar species

Acleris robinsonana may appear similar to other species of Acleris due to its highly variable forewing pattern.

Biology

Life history

This species completes one or two generations per year. Adults are present in May or June.

Larvae fold or tie newly developing leaves and feed on the upper surface. Later instars fold leaves and eat the apical half. Individuals overwinter as adults.

Host plants

California wildrose (Rosa californica)

Area of origin

Northeastern United States

Distribution

Northeastern United States across southern Canada to British Columbia and south to California

Taxonomy

Current valid name

Acleris robinsoniana (Forbes)

Common names

  • Robinson's acleris moth

Synonyms

  • Peronea clemensiana
  • Peronea robinsoniana

Placement

Tortricinae: Tortricini

Selected References

Powell, J. A. 1964. Biological and taxonomic studies on tortricine moths, with reference to the species in California. University of California Publications in Entomology. Vol. 32. 317 pp.