Pill Millipede - Glomeris marginata


Female length: 8 to 20 mm, Male length 7 to 15 mm. This millipede is usually shiny black with pale edges to each tergite. Like the Pill Woodlouse, it can curl up into a pea-like ball if threatened, but not a complete sphere like the Pill Woodlouse. It is similar in appearance to the Pill Woodlouse but has two legs per segment.

Similar Species

The Pill Woodlouse is similar but only has one pair of legs per segment. The Pill Millipede has one large termninal tergite rather than the several seen in the Pill Woodlouse.

Identification difficulty

Seems to prefer calcareous soils, and can be found amongst leaf litter in woodlands, fields and hedgerows. It also shows a preference for humid areas, such as below logs and stones.

When to see it

All year round.

Life History

This species feeds on dead organic matter; it tends to be active mainly at night.

UK Status

Although widespread and common in Britain, this millipede has not been recorded further north than Edinburgh.

VC55 Status

Common in Leicestershire and Rutland.

Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map

Species profile

Common names
Pill Millipede
Species group:
Centipedes & Millipedes
Records on NatureSpot:
First record:
11/04/2009 (Nicholls, David)
Last record:
07/06/2024 (Nicholls, David)

Total records by month

% of records within its species group

10km squares with records

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