Ash Leaf Cone Roller

Caloptilia fraxinella · Order: Lepidoptera · Family: Gracillariidae

Also called: Ash Leaf Cone Roller Moth

Damages trees, gardens or crops. It is a pest that damages ash trees.

Source: Wikipedia

Ash Leaf Cone Roller
Photo: iNaturalist user, CC0

The ash leaf cone roller lives in parts of Canada and the northern United States. Its larvae mine the leaves of ash and privet species, feeding on the foliage.

Source: Wikipedia

Is it a pest in the house?

It is regarded as a significant pest of horticultural ash.

Source: Wikipedia

What it eats

Larvae feed on several ash species such as white ash, black ash, and green ash, as well as on privet plants. They create mines inside the leaves of their host plants.

Source: Wikipedia

Where it comes from

Its native range includes the same Canadian provinces and U.S. states listed for its habitat.

Source: Wikipedia

Where it is found in the US

Recorded in 18 of 51 states and DC. Most records: Vermont, Michigan, New York, Minnesota, Pennsylvania, Ohio, New Hampshire, Connecticut.

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

Source: GBIF

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

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

What plants does the ash leaf cone roller feed on?

The larvae feed on ash trees (including white, black, and green ash) and on privet species, mining the leaves of these plants.

Source: Wikipedia

Same family (Gracillariidae)

Sources

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

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

Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.

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.