KEYS    About TortAI    Fact Sheets    Glossary    ID Thumbnails    DNA Search    Dissection Guides Pandemis lamprosana << Previous Next >> CAPS Non-target - Adult Pandemis lamprosana (Robinson) (Tortricidae: Tortricinae: Archipini) Fig. 1: Male Fig. 1: Male Fig. 2: Male Fig. 2: Male Fig. 3: Male Fig. 3: Male Fig. 4: Female Fig. 4: Female Fig. 5: Male genitalia Fig. 5: Male genitalia Fig. 6: Female genitalia Fig. 6: Female genitalia Adult Recognition FWL: 8.0-10.5 mm (male); 9.5-12.0 mm (female) Adults are light brown with fasciate markings and white to light gray hindwings. 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. Six species of Pandemis occur in the Nearctic. Four, P. canadana, P. lamprosana, P. limitata, and P. pyrusana, are native, while two, P. cerasana and P. heparana, have been introduced from the Palearctic. All species treated here have a straw (yellow) to brown forewing with brown to dark-brown markings consisting of a patch on the costa below the apex, a median band that extends from costa to dorsum, and a basal band. The two bands (or fasciae) may be lined with light or dark scales in some individuals, creating the appearance of three lines running vertically across the wing. Males have a distinctive notch at the base of the antennae and modified dark scales on the ventral surface of abdominal segments 2-3 (this character is absent in P. lamprosana and P. heparana). Males lack a forewing costal fold. Species identification within the group is difficult. Pandemis lamprosana, P. cerasana, and P. heparana, can be identified by wing color and male genitalia. The other three species, P. canadana, P. limitata, and P. pyrusana, exhibit variable wing patterns, share identical genitalia, and cannot be reliably separated where their distributions overlap. The following table lists a combination of wing color and geographic distribution that can be used to identify many Pandemis individuals collected in the U.S. Pandemis 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, British Columbia; Europe and Asia lamprosana tan to light brown white to light gray absent Northeastern U.S., southern Quebec and Ontario limitata straw to medium brown gray and white present Eastern U.S. and southern Canada; generally absent in the U.S. west of the Rocky Mtns. pyrusana straw to medium brown all white present Rocky Mtns. west to California, southern Alberta and British Columbia Larval Morphology Late instar larvae are approximately 20 mm in length and are entirely green and unmarked with moderately large pinacula and long setae. Earlier instars may have a dark lateral mark on each side of the prothoracic shield. A well developed anal comb is present with 6-8 teeth. MacKay (1962) 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. Biology Pandemis lamprosana completes a single generation per year. Adults are present in late June and July. 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. Host plants Larvae have been recorded feeding on a variety of deciduous trees. Reports of larvae feeding on Urticaceae in Illinois are questionable. Family Genus/species Common name Aceraceae Acer rubrum L. red maple Aceraceae Acer saccharinum L. silver maple Aceraceae Acer spicatum Lam. mountain maple Betulaceae Betula alleghaniensis Britton yellow birch Betulaceae Betula papyrifera Marshall paper birch Betulaceae Ostrya virginiana (Mill.) K. Koch hophornbeam Fabaceae Gleditsia triacanthos L. honeylocust Fagaceae Fagus L. beech Fagaceae Quercus L. oak Fagaceae Quercus rubra L. red oak Hamamelidaceae Hamamelis L. witchhazel Lauraceae Sassafras Nees & Eberm. sassafras Oleaceae Fraxinus americana L. white ash Oleaceae Fraxinus L. ash Platanaceae Platanus L. sycamore Rosaceae Prunus virginiana L. chokecherry Salicaceae Populus tremuloides Michx. quaking aspen Tiliaceae Tilia americana L. American basswood Ulmaceae Ulmus americana L. American elm Ulmaceae Ulmus rubra Muhl. slippery elm Distribution Pandemis lamprosana is found in the northeastern U.S. and southern Canada (Quebec and Ontario). References Chapman, P. J. and S. E. Lienk. 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. Dombroskie, J. J. 2011. Aspects of archipine evolution (Lepidoptera: Tortricidae). University of Alberta, Department of Biological Sciences. Ph.D. dissertation. 488 pp. Tortricids of Agricultural Importance by Todd M. Gilligan and Marc E. Epstein Interactive Keys developed in Lucid 3.5. Last updated August 2014.