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Atopochetus spinimargo
A millipede of eastern Thailand and Vietnam. Bands of warm orange alternate with grey-green and shift with the light. Its legs are long and it climbs, and mature animals wander about in daylight. Described only in 2018.
Atopochetus spinimargo, described by Pimvichai and colleagues in 2018, is a Thai millipede from the green riverine forests of the east of the country, where the Mekong and Mun rivers run. Adults reach 8-10cm, mid-sized for the hobby, with alternating bands of warm orange and grey-green that shift depending on the light. Juveniles are duller and darker, and the banding sharpens through successive moults. Adults are sexually dichromatic: males have black legs and deep black segments, females reddish feet and greyish segments. Its legs are long and it climbs, so with cork bark and branches it can be seen moving about in daylight. It moults in a sealed chamber underground, so the substrate must be at least as deep as an adult is long, a minimum of 10cm. A floor around 30cm square suits a small group. Never letting leaf litter and white-rotted wood run out matters most, and calcium stays permanently available. It breeds willingly, but maturity takes into the second year.
Source: millibase.org
The Thai Rainbow Millipede lives 3-5 years.
The Thai Rainbow Millipede grows to 8-10cm.
The ideal temperature for the Thai Rainbow Millipede is 26〜28℃. Ideal humidity is 75〜90%.
Keep it at 26-28C with the heat source always above the enclosure and never underneath, at 75-90% humidity with the substrate damp through the lower layers.
Sources: PostPods Thai Rainbow Millipede (size, substrate, breeding) / Insektenliebe Atopochetus spinimargo (origin, temperature, humidity, sexual dichromatism) / MilliBase / GBIF
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Atopochetus spinimargo Pimvichai, Enghoff, Panha & Backeljau, 2018
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices (species not listed)
Regulations may change. Always verify the latest information with the relevant authorities.
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Origin
Eastern Thailand (Isan) to Vietnam
Lifespan
3-5 years
Size
8-10cm
Temperature
26〜28℃
Humidity
75〜90%
Decaying leaf litter and white-rotted wood as the staple, plus carrot, courgette, cucumber and squash, occasional fruit and a pinch of fish flake; cuttlebone stays in permanently
26-28C and 75-90% humidity. Always heat from above, never from underneath. Keep the substrate damp through the lower layers without turning it to mud.
Substrate at least as deep as the adult is long, minimum 10cm, built on flake soil, white-rotted hardwood and topsoil with leaf litter on top. Add cork bark and branches to climb.
Never let leaf litter and white-rotted wood run out. Carrot, courgette, cucumber and squash, with occasional fruit and a little fish flake. Keep cuttlebone in permanently.
Placid, and it neither bites nor stings. It coils when alarmed and may release a defensive fluid. It lives happily in groups and gets bolder with age.
Wash hands with soap after handling and keep them from your face. The trade name covers more than one species, so check care information against the scientific name. In particular the Vietnamese congener Atopochetus dollfusi (formerly Tonkinbolus dollfusi) is sold under the same Thai Rainbow name, so check locality together with the scientific name.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Thai Rainbow Millipede is 26〜28℃. Recommended humidity is 75〜90%. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Thai Rainbow Millipede is 3-5 years. With proper care and nutrition, they can live a long and healthy life.
Thai Rainbow Millipede typically reaches 8-10cm as an adult. Size may vary depending on care conditions and individual genetics.
Thai Rainbow Millipede feeds on: Decaying leaf litter and white-rotted wood as the staple, plus carrot, courgette, cucumber and squash, occasional fruit and a pinch of fish flake; cuttlebone stays in permanently. Aim for a balanced diet with appropriate feeding frequency.
The price of Thai Rainbow Millipede varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 17, 2026