Bug FAQLarge Aspen Tortrix
Choristoneura conflictana · Order: Lepidoptera · Family: Tortricidae
Also called: Large Aspen Tortrix Moth
The adult moth has a wingspan of about 25 to 35 mm. Adults are flying from May through August. The caterpillars eat the leaves of quaking aspen (Populus tremuloides).
Source: Wikipedia
Size
Wingspan ranges from 25 to 35 mm.
Source: Wikipedia
What it eats
Larvae feed on quaking aspen, Populus tremuloides.
Source: Wikipedia
When you see it
Adults are on the wing between May and August.
Source: Wikipedia
Where it comes from
Its range includes the United States from the Pacific to the Atlantic and from Alaska to the southwestern states.
Source: Wikipedia
Where it is found in the US
Recorded in 28 of 51 states and DC. Most records: Michigan, Colorado, Wisconsin, Utah, New York, Alaska, Minnesota, Arizona.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When are adult Large Aspen Tortrix moths active?
Adults are active from May through August.
Source: Wikipedia
What do the caterpillars eat?
The larvae feed on the leaves of quaking aspen (Populus tremuloides).
Source: Wikipedia
Same family (Tortricidae)
Oblique-banded Leafroller MothChoristoneura rosaceanaDamages trees, gardens or crops
Garden TortrixClepsis peritanaDamages trees, gardens or crops
Common MarbleSyricoris lacunanaDamages trees, gardens or crops
Red-banded Leafroller MothArgyrotaenia velutinanaDamages trees, gardens or crops
Light Brown Apple MothEpiphyas postvittanaDamages trees, gardens or crops
Aster and Reddish Eucosma Moths and AlliesEucosma parmatanaSources
- Wikipedia: https://en.wikipedia.org/wiki/Choristoneura_conflictana
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-25 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-25.