Bibio slossonae

Bibio slossonae · Order: Diptera · Family: Bibionidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Bibio slossonae
Photo: Katja Schulz, CC BY

The larvae feed on decaying organic matter. Adult Bibio slossonae visit witch-hazel flowers and help pollinate them.

Source: Wikipedia

What it eats

The larvae are detritivores, consuming dead plant material. Adults act as pollinators of witch-hazel plants.

Source: Wikipedia

Where it is found in the US

Recorded in 22 of 51 states and DC. Most records: Vermont, California, New York, Pennsylvania, Alaska, Maryland, New Hampshire, Massachusetts.

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

Bibio slossonae photo 2
Photo: Zachary Dankowicz, CC BY
Bibio slossonae photo 3
Photo: Jason Hill, CC BY
Bibio slossonae photo 4
Photo: Richard Littauer, CC BY
Bibio slossonae photo 5
Photo: iNaturalist user, CC0

Same family (Bibionidae)

Hawthorn FlyHawthorn FlyBibio marciDamages trees, gardens or cropsCommon LovebugCommon LovebugPlecia nearcticaWhite-winged March FlyWhite-winged March FlyBibio albipennisLovebugLovebugBibio femoratusBibio articulatusBibio articulatusGarden March FlyGarden March FlyBibio hortulanus

Sources

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

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.