Pandemis lamprosana

Status

NATIVE

DOMESTIC SURVEY

Taxonomy

Pandemis lamprosana (Robinson) (Tortricidae: Tortricinae: Archipini)

Adult Recognition

FWL: 8.0–10.5 mm (males); 9.5–12.0 mm (females)

Adults are light orange-brown with fasciate markings and white to light gray hindwings. Males lack a forewing costal fold and have a notch in the antennae. 

Male genitalia are characterized by a broad, rounded uncus; circular valvae; and a pistol-shaped phallus. Female genitalia are characterized by a ductus bursae with a sclerotized portion near the ostium and a short, dagger-like signum with a large basal plate in the corpus bursae. 

Larval Morphology

The following account is summarized from MacKay (1962a)MacKay (1962a):
MacKay, M. R. 1962a. Larvae of the North American Tortricinae (Lepidoptera: Tortricidae). Canadian Entomologist, Supplement 28: 1-182..

Mature larva 20–24 mm in length; head pale green, body pale blue-green. A more detailed account is not given by MacKay (1962a)MacKay (1962a):
MacKay, M. R. 1962a. Larvae of the North American Tortricinae (Lepidoptera: Tortricidae). Canadian Entomologist, Supplement 28: 1-182., nor are figures of larval chaetotaxy, but this species presumably closely resembles Pandemis limitata. 

Similar Species

Pandemis lamprosana can be separated from other Pandemis listed here by the white to light gray hindwings and the lack of dark scales on the second abdominal sternite in the male.

The following table lists a combination of wing color and geographic distribution that can be used to identify many Pandemis individuals collected in the United States.

Species	Forewing color	Hindwing color	Sex scales on male 2nd abd. segment	Distribution
canadana	medium to dark brown	all gray	present	Maine, Colorado, Wyoming, Southern Canada
cerasana	straw to light brown	grayish brown	present	Pacific Northwest, British Columbia; Europe and Asia
heparana	medium brown	light to medium grayish brown	absent	Pacific Northwest; Northeastern United States and neighboring Canada; Europe and Asia
lamprosana	tan to light brown	white to light gray	absent	Eastern U.S. and neighboring Canada, south to Tennessee/North Carolina
limitata	straw to medium brown	gray and white	present	Eastern United States and neighboring Canada, generally absent in the United States west of the Rocky Mtns.
pyrusana	straw to medium brown	all white	present	Rocky Mtns. west to California, southern Alberta and British Columbia

 

MacKay (1962a)MacKay (1962a):
MacKay, M. R. 1962a. Larvae of the North American Tortricinae (Lepidoptera: Tortricidae). Canadian Entomologist, Supplement 28: 1-182. examined several species of Nearctic Pandemis and could find no species-specific larval characters. Diagnostic characters for the genus include: SD2 on A1–8 on same pinaculum as SD1; L1 and L2 anterior to spiracle on A2–8; SV group on A1,2,7,8,9 usually 3:3:3:2:2; D2s on A8 as far apart as D1s; D1 on A9 on its own pinaculum; anal setae very long; anal comb with 6–8 teeth.

Distribution

Pandemis lamprosana is found in the northeastern United States and southern Canada, from Minnesota to Nova Scotia and south to Tennessee and North Carolina. 

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..

Pandemis lamprosana completes a single generation per year. Adults are present from May to September but peak in number in July and August.

Females lay eggs on the upper surface of leaves in large masses. Larvae feed on leaves and have not been observed feeding on fruit. Third instar larvae construct a hibernaculum in a protected site and overwinter until the following spring. Feeding resumes in the spring, and larvae do not complete development until June. Pupation occurs in the final larval feeding site.

Larvae have been recorded feeding on a variety of deciduous trees. Reports of larvae feeding on Urticaceae in Illinois are questionable.

Plant Associations

View full screen host table here

Links

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