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Fig. 1: Male

Fig. 2: Male

Fig. 3: Female

Fig. 4: Female

Fig. 5: Male genitalia

Fig. 6: Female genitalia

Fig. 7: Female sterigma

Recognition

Diagnostic features

Adults

FWL: 10.2-12.2mm

Adults have elongate, narrow forewings. Many California individuals are uniform gray with a dark longitudinal line. Individuals found north of California have more prominent markings and may be mottled with black spots and lines. Males lack a forewing costal fold.

Related or similar species

Acleris senescens is unlikely to be confused with other species treated here.

Biology

Life history

Adults are present in early spring and late fall in California, suggesting two generations per year.

Host plants

Unknown. Possible hosts are alder (Alnus sp.), Ceanothus sp., and willow (Salix sp.).

Area of origin

North America

Distribution

Along the Pacific Coast from British Columbia south to California

Taxonomy

Current valid name

Acleris senescens (Zeller)

Common names

  • [Tortrix moth]

Synonyms

  • Teras senescens

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.