Chasmatonotus atripes

Chasmatonotus atripes · Order: Diptera · Family: Chironomidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Chasmatonotus atripes
Photo: iNaturalist user, CC0

Chasmatonotus atripes is a species of midge. It belongs to the family Chironomidae.

Source: Wikipedia

How to recognize it

Chasmatonotus atripes is a midge in the family Chironomidae.

Source: Wikipedia

Where it is found in the US

Recorded in 15 of 51 states and DC. Most records: New York, Pennsylvania, Ohio, Illinois, New Hampshire, Maine, New Jersey, Michigan.

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

Chasmatonotus atripes photo 2
Photo: iNaturalist user, CC0
Chasmatonotus atripes photo 3
Photo: Michael, Antoni and Nihat Hinczewski, CC BY
Chasmatonotus atripes photo 4
Photo: iNaturalist user, CC0
Chasmatonotus atripes photo 5
Photo: Tanner Shepard, CC BY

Questions people ask

What kind of insect is Chasmatonotus atripes?

It is a midge that belongs to the family Chironomidae.

Source: Wikipedia

Same family (Chironomidae)

Thick-tailed Non-biting MidgeThick-tailed Non-biting MidgeChironomus crassicaudatusProcladius bellusProcladius bellusPolypedilum braseniaePolypedilum braseniaeCoelotanypus scapularisCoelotanypus scapularisThienemannimyia barberiThienemannimyia barberiCricotopus sylvestrisCricotopus sylvestris

Sources

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

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