Black Grass-veneer

Neodactria caliginosellus · Order: Lepidoptera · Family: Crambidae

Also called: Corn Root Webworm Moth

Damages trees, gardens or crops. Its larvae damage turf grasses and corn crops.

Source: Wikipedia

Black Grass-veneer
Photo: Ilona, CC BY-SA

The adult has a pale white-gray body. It lives in grassy fields and feeds as a larva on turf grasses and corn stalks. It is native to North America, recorded from many U.S. states and Canadian provinces.

Source: Wikipedia

How to recognize it

Adults are pale white to gray in color.

Source: Wikipedia

Where it lives

It inhabits grassy areas and fields.

Source: Wikipedia

Where it comes from

It occurs in North America, with records from several U.S. states and Canadian provinces.

Source: Wikipedia

Where it is found in the US

Recorded in 20 of 51 states and DC. Most records: Alabama, Michigan, Tennessee, Pennsylvania, Mississippi, New Jersey, Maryland, Louisiana.

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

Questions people ask

Where is this bug found?

It is found across North America, including many U.S. states and Canadian provinces.

Source: Wikipedia

What does it look like?

Adults have a pale white to gray body.

Source: Wikipedia

What habitat does it prefer?

It lives in grassy areas and fields.

Source: Wikipedia

Same family (Crambidae)

Sources

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

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