Filbertworm Moth

Cydia latiferreana · Order: Lepidoptera · Family: Tortricidae

Damages trees, gardens or crops. The filbertworm moth damages hazelnut crops, especially in the Pacific Northwest.

Source: Wikipedia

Filbertworm Moth
Photo: brendanboyd, CC BY

The filbertworm moth (Cydia latiferreana) is a tortricid moth found across most of North America.

Source: Wikipedia

How to recognize it

Cydia latiferreana, known as the filbertworm moth, belongs to the family Tortricidae.

Source: Wikipedia

Size

The adult moth has a wingspan of about 18 mm.

Source: Wikipedia

Where it lives

It occurs throughout most of North America.

Source: Wikipedia

What it eats

Larvae feed on acorns of several oak species and are especially noted for eating hazelnut seeds (Corylus).

Source: Wikipedia

Life cycle

Adults are active from July through October, depending on location.

Source: Wikipedia

When you see it

The flight period runs from July to October, varying by region.

Source: Wikipedia

Where it comes from

Its native range covers most of North America.

Source: Wikipedia

Lookalikes

It was formerly placed in the monotypic genus Melissopus.

Source: Wikipedia

Where it is found in the US

Recorded in 46 of 51 states and DC. Most records: Texas, California, Massachusetts, Alabama, Maryland, Oklahoma, Ohio, Pennsylvania.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Status: native in North America; native in United States; native in Canada. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

What crops does it damage?

The larvae damage hazelnut crops and can also feed on acorns of several oak species.

Source: Wikipedia

Same family (Tortricidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Cydia_latiferreana

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.