Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

See Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Species Choristoneura rosaceana - Oblique-banded Leafroller - Hodges#3635

Pupa and adult moth. 6/1/2010 - Choristoneura rosaceana - female Oblique-banded Leafroller Moth – 3635 – Dorsal - Choristoneura rosaceana tortricid moth - Choristoneura rosaceana Choristoneura rosaceana - female 3634 – Choristoneura zapulata - Choristoneura rosaceana Archips purpurana? - Choristoneura rosaceana - female Choristoneura rosaceana Choristoneura rosaceana
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Tortricoidea (Tortricid Moths)
Family Tortricidae (Tortricid Moths)
Subfamily Tortricinae
Tribe Archipini
Genus Choristoneura
Species rosaceana (Oblique-banded Leafroller - Hodges#3635)
Hodges Number
Other Common Names
Rosaceous Leaf Roller
Synonyms and other taxonomic changes
Choristoneura rosaceana (Harris, 1841)
Loxotaenia rosaceana Harris, 1841
Choristoneura vicariana (Walker, 1863)
Choristoneura gossypiana (Packard, 1869)
Explanation of Names
Specific epithet for the larval hosts in the Rosaceae family.
Forewing length: males 7.5-11 mm, females 11.5-14 mm. (LBAM)

FW in male has a costal fold (See detail image) from base to top of AM, where dark scale tufts lie flat, forming a dark spot, which is absent in similar species. HW pale orange-yellow in male; deep-yellow in female, but may have gray shading in the lower third. (1)
Common throughout eastern N. America.
Bivoltine on Block Island, RI, with adult records from early June to early September and a single record from 6 October 2021.(2)
Polyphagous. Prefers plants from the Rosaceae family. A pest in apple, pear, and peach orchards and also will feed on blueberries and raspberries, ornamental shrubs, occasionally found feeding on pines. (3)
Life Cycle
Overwinter as young larvae in tightly-woven cases under bud scales or loose bark or between leaves.(4)
Young larvae feed on the surface of unfolding leaves, then they tie 2 or more leaves together with silk and feed within the case.(4)
Two generations per year over the majority of its range, with one generation in northern areas and at higher elevations. Adults are present in late June - July and again in late August - September.

Final instar larva; pupa; adult
See Also
Other "bell-shaped" Leafrollers:
The following note was posted to Facebook by Jason Dombroskie on 11 January 2019:
Today I was asked how to separate species that look similar to Choristoneura rosaceana and thought I'd share my response here since it is commonly collected and frequently misIDed. The short answer is assume everything is C. rosaceana unless you have reason to believe otherwise. The longer answer is below and basically outlines my thought process. Note this doesn't always work and I still have a pile of specimens that I haven't put a name on yet. So treat this advice as tentative.
1. Archips purpurana males with stout FW with an angular costal margin and females with an exaggerated costal sinuosity.
2. C. fractivittana is pretty distinctive by smooth FW pattern in both sexes and slender costal fold in the male.
3. C. albaniana have a far northern / high elevation distribution. FW usually finely strigulated, can sometimes have a greyish wash or all grey. HW white.
4. Male C. rosaceana almost always have a rudimentary triangular costal fold (all species below lack a costal fold). Highly variable FW pattern. When in doubt, brushing the tip of the abdomen will show a bulbous uncus. Widespread and abundant.
5. C. obsoletana males usually have the median band obsolete in the middle of the FW. Common in FL, rare northwards to KS, IL, & MA. Uncus slender, sacculus more-or-less smooth and nearly reaches end of valve.
6. C. parallela males vary a bit in FW pattern, but usually pale brown - straw. Widespread in east, rare n of MO - OH - NY. Uncus slender, sacculus is roughly 3/4 length of the valve and with a variably expressed tooth near middle.
7. C. zapulata males usually have a pale straw FW. Widespread in west, in east restricted to Great Lakes dunes and a few populations in NB & QC. Brushing will show a variably broad uncus, sometimes almost similar to C. rosaceana.
8. Female C. rosaceana FW highly variable, costal margin usually sinuous, though not as exaggerated as A. purpurana. HW usually half orange half grey. Sterigma sclerotized and cup-shaped (largely membranous with a colliculum in next three species).
9. Female C. parallela FW with straight to at most subtly undulating costal margin, usually orange and with a well defined median band. HW half orange half grey.
10. Female C. obsoletana FW with straight costal margin, often orange and usually with the median band broadly interrupted in middle. HW yellow.
11. Female C. zapulata FW with straight costal margin, straw coloured. HW half whitish half grey.
Print References
Harris, T.W., 1841. Lepidoptera. Leaf-rollers (Tortrices). A report on the insects of Massachusetts, injurious to vegetation, p.348.
Emmons, E., 1854. I. Insects of New York. Order XI. Lepidoptera (continued). Tortricidae. Leaf-rollers. Natural History of New York 5: 250; Pl.6, f.8-11.
Works Cited
1.Peterson Field Guides: Eastern Moths
Charles V. Covell. 1984. Houghton Mifflin Company.
2.Block Island Moths
3.University of Alberta Entomology Collection
4.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.