Blueberry Gray

Glena cognataria · Order: Lepidoptera · Family: Geometridae

Also called: Blueberry Gray Moth

Damages trees, gardens or crops. It damages blueberry and several hardwood trees.

Source: Wikipedia

Blueberry Gray
Photo: Laura Gaudette, CC BY

The blueberry gray moth has forewings about 13 to 15 mm long. It lives in bogs and pine barrens across a range from Florida up to Nova Scotia and New Brunswick. Its larvae feed on blueberry plants and a variety of hardwoods such as oak, maple, cherry, willow and poplar.

Source: Wikipedia

Size

Forewing length is roughly 13 to 15 mm.

Source: Wikipedia

Where it lives

It is found in bogs and pine barrens.

Source: Wikipedia

Where it comes from

The species is native to North America, from Florida northward to Nova Scotia and New Brunswick.

Source: Wikipedia

Where it is found in the US

Recorded in 14 of 51 states and DC. Most records: Massachusetts, Florida, New Jersey, North Carolina, Georgia, Maine, Mississippi, New Hampshire.

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

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Source: GBIF

More photos

Questions people ask

What plants do the larvae eat?

The larvae feed on blueberry and on hardwood trees such as oak, maple, cherry, willow and poplar.

Source: Wikipedia

Where is the blueberry gray moth found?

It occurs in bogs and pine barrens from Florida up to Nova Scotia and New Brunswick in North America.

Source: Wikipedia

How big is the blueberry gray moth?

Its forewings measure about 13 to 15 mm in length.

Source: Wikipedia

Same family (Geometridae)

Sources

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

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

Text written 2026-10-26 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.

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.