Large Mossy Glyph

Protodeltote muscosula · Order: Lepidoptera · Family: Noctuidae

Also called: Large Mossy Lithacodia, Large Mossy Lithacodia Moth

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Large Mossy Glyph
Photo: skitterbug, CC BY

Adult Large Mossy Glyph moths have a wingspan between about 19 and 23 mm. The caterpillars feed on swamp grasses, especially saw grass.

Source: Wikipedia

Size

Wingspan is roughly 19 to 23 mm.

Source: Wikipedia

What it eats

Larvae eat swamp grasses, particularly saw grass.

Source: Wikipedia

Where it is found in the US

Recorded in 37 of 51 states and DC. Most records: Maryland, Ohio, Pennsylvania, North Carolina, Vermont, Michigan, New York, Virginia.

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

Large Mossy Glyph photo 3
Photo: Adrienne van den Beemt, CC BY
Large Mossy Glyph photo 4
Photo: unknown, CC0
Large Mossy Glyph photo 5
Photo: Paul Bedell, CC BY-SA
Large Mossy Glyph photo 6
Photo: Desiree L. Narango, CC BY

Same family (Noctuidae)

Ipsilon Dart MothIpsilon Dart MothAgrotis ipsilonDamages trees, gardens or cropsFall Armyworm MothFall Armyworm MothSpodoptera frugiperdaDamages trees, gardens or cropsArmy Cutworm MothArmy Cutworm MothEuxoa auxiliarisDamages trees, gardens or cropsLarge Yellow UnderwingLarge Yellow UnderwingNoctua pronubaDamages trees, gardens or cropsSilver ΥSilver ΥAutographa gammaAmerican DaggerAmerican DaggerAcronicta americanaCan irritate skin

Sources

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

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