White-legged Snake Millipede

Tachypodoiulus niger · Order: Julida · Family: Julidae

Also called: black millipede, black snake millipede, white-legged black millipede, white-legged millipede

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
White-legged Snake Millipede
Photo: Jon Mortin, CC BY

The white-legged snake millipede has a shiny black, roughly cylindrical body with about 100 pairs of white legs across 41 to 56 segments.

Source: Wikipedia

Size

Adults have 41 to 56 body segments and about 100 pairs of legs.

Source: Wikipedia

Where it lives

It is found in leaf litter, under bark and in moss.

Source: Wikipedia

Where it comes from

Its range includes Ireland, Britain, Spain, France, the Benelux countries, Germany, Switzerland, Austria and the Czech Republic.

Source: Wikipedia

Lookalikes

It looks very similar to Cylindroiulus londinensis and can only be reliably separated by examining the shape of the telson.

Source: Wikipedia

More photos

White-legged Snake Millipede photo 3
Photo: unknown, CC0

Questions people ask

When are white-legged snake millipedes active?

They are most active from shortly after sunset until just before sunrise, and in summer they may also be active in the afternoon.

Source: Wikipedia

Same family (Julidae)

Sources

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

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

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.

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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.

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