Bug FAQWestern Avocado Leafroller Moth
Amorbia cuneanum · Order: Lepidoptera · Family: Tortricidae
Source: Wikipedia
Adults have forewings about 11.5 to 14.5 mm long, while full-grown larvae reach roughly 25 mm. It occurs from Baja California up through southwestern Canada and east to Arizona and Idaho. Adults fly year-round in two generations, and the caterpillars feed on many trees and shrubs such as avocado, citrus, and willow.
Source: Wikipedia
Size
Male forewings measure 11.5 to 13 mm and females 12 to 14.5 mm in length. Fully grown larvae are about 25 mm long.
Source: Wikipedia
What it eats
Caterpillars feed on many plants including avocado, citrus, willow, oak, and various shrubs.
Source: Wikipedia
Life cycle
Adults are on the wing throughout the year in two generations per year.
Source: Wikipedia
When you see it
Adults can be seen year-round, reflecting the two-generation cycle.
Source: Wikipedia
Where it comes from
It is native from Baja California, Mexico, northward to southwestern Canada. Its eastern range reaches Arizona and Idaho in the United States.
Source: Wikipedia
Where it is found in the US
Recorded in 8 of 51 states and DC. Most records: California, Arizona, Oregon, Washington, Idaho, Hawaii, Montana, Utah.
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
What plants do the larvae eat?
The larvae feed on a wide range of trees and shrubs such as avocado, citrus, willow, oak, and many others.
Source: Wikipedia
When are adult moths active?
Adults are active all year long, producing two generations each year.
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/Amorbia_cuneanum
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.