Reptoria

American giant millipede (Narceus americanus)

American giant millipede (Narceus americanus), typical appearance of the species

Invertebrates · Difficulty: Beginner

Key facts and care guidance for American giant millipede (Narceus americanus) (origin: The eastern USA). Adult size around 10–12 cm, individual animals up to 15 cm. Life expectancy 5–10 years. The values below are carefully researched guidance.

Short answers

American giant millipede: How big does the enclosure need to be?

80×30×30 cm (single animal or small group), of which 10–15 cm is substrate.

American giant millipede: What temperature does it need?

Daytime 20–26 °C, basking spot No basking spot, at night 16–20 °C.

American giant millipede: Does it need UVB lighting?

UVB: Not required.

American giant millipede: How long do they live?

Life expectancy: 5–10 years.

American giant millipede: Is it suitable for beginners?

Yes – it is considered suitable for beginners (difficulty: Beginner).

Climate

Daytime temperature
20–26 °C
Night temperature
16–20 °C
Basking spot
No basking spot
Humidity
70–85 %
UVB
Not required

Enclosure

Minimum size
80×30×30 cm (single animal or small group), of which 10–15 cm is substrate
Substrate
Deep leaf mould with white-rotted wood (15 cm), a calcium source

Feeding

Food
Fallen leaves, white-rotted wood, vegetables, cuttlebone
Feeding interval
always available

Key facts

Adult size
10–12 cm, individual animals up to 15 cm
Life expectancy
5–10 years
Origin
The eastern USA
Protection status
Not listed under CITES
Brumation
A cooler spell of 8–12 weeks
Cohabitation
Group housing. You see more of them in a group, but they are not dependent on it — kept alone, such an animal carries on just as unobtrusively.

Notes

To be kept cooler than the tropical species – native fallen leaves (oak, beech) are ideal food. Under stress it releases a skin-irritating secretion: wash your hands after contact.

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Related species

All species in the care wiki →

What you need to start

To keep American giant millipede (Narceus americanus) you typically need: a suitable enclosure (80×30×30 cm (single animal or small group), of which 10–15 cm is substrate), substrate (Deep leaf mould with white-rotted wood (15 cm), a calcium source), a heat source with a thermostat, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.

The complete, interactive care database is in the Reptoria app.

Last updated: 9 October 2026 · Editor: Reptoria editorial team · Sources include: Wikipedia EN, bantam.earth, einrichtungsbeispiele.de, eu_annex.txt (lokal, VO (EU) 2026/1383), joshsfrogs.com

All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).