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Fig. 1: Male

Fig. 2: Male

Fig. 3: Female

Fig. 4: Male genitalia

Fig. 5: Membranous lobe

Fig. 6: Female sterigma

Fig. 7: Female genitalia

Recognition

Diagnostic features

Adults

FWL: 6.4-10.6mm

Forewing color is variable from dark brown to white. Most individuals have a well defined median fascia and spot on the costa although some may be nearly unmarked. Hindwing color is primarily white. Males lack a forewing costal fold.

Males have a small membranous lobe on the apex of the valva. Females lack a signum in the corpus bursae.

Related or similar species

Clepsis peritana is similar but smaller in size; the entire apex of the peritana male valva is membranous and peritana females have a spiral ductus bursae. Clepsis virescana is similar in size; male virescana have a forewing costal fold and female virescana have a signum in the corpus bursae.

LBAM also has a membranous lobe on the apex of the male valva, although the lobe is much smaller in fucana.

Biology

Life history

This species completes two generations per year in California. Adults are most common in April to June and again in September and October.

Larvae hollow out terminals of the host and feed on leaves that are webbed to the larval shelter.

Host plants

Published hosts include figwort (Scrophularia sp.), globe artichoke (Cynara scolymus), and hedgenettle (Stachys sp.).

Area of origin

North America

Distribution

Clepsis fucana occurs along the west coast from British Columbia south to Monterey County, California

Taxonomy

Current valid name

Clepsis fucana (Walsingham)

Common names

  • [Tortrix moth]

Synonyms

  • Lozotaenia fucana
  • Tortrix fucana
  • Clepsis busckana
  • Cacoecia victoriana

Placement

Tortricinae: Archipini

Selected References

Freeman, T. N. 1958. The Archipinae of North America (Lepidoptera: Tortricidae). The Canadian Entomologist. 90 (suppl. 7). 89 pp.

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.