9:48in productionCh. 1 · Size/ 9:48 · ceiling 15 min
Insects & invertebrates · Systems
Archispirostreptus gigas
Driver ants cannot eat it — and that makes it ecologically exceptional.
Archispirostreptus gigas is the largest living millipede. It lives in lowland forests and tree-containing coastal areas from Mozambique to Kenya and in Dhofar. It defends itself by coiling and secreting toxic quinones. Driver ants cannot prey on it. It decomposes leaf litter and rotting wood. It supports methanogenesis in low-oxygen microhabitats. It does not occur above 1,000 metres.
It grows up to 33.5 cm — the longest millipede alive.
1:58
Range
It lives only below 1,000 m — in forests and tree-containing coastal zones from Mozambique to Kenya and in Dhofar.
3:02
Defence
It coils and secretes toxic quinones — making it immune to driver ant predation.
4:10
Legs
It has ~256 legs — but the count changes with each molt.
5:12
Diet & Habitat
It feeds on decaying plant matter in rotting logs and leaf litter.
6:35
Ecological Role
It aids nutrient cycling and methanogenesis in low-oxygen microhabitats.
Worth your time?
Yes. See the whole thing.
4/ 5
What works
It decomposes organic matter in rotting logs and leaf litter.
It supports methanogenesis in low-oxygen microhabitats.
It deters driver ants with chemical defence.
What does not
It does not occur above 1,000 metres.
It does not inhabit treeless coastal habitats.
See it if
Ecologists studying nutrient cycling in tropical forests.
Field biologists working in lowland East Africa or Dhofar.
Skip it if
High-altitude surveyors.
Researchers in open, arid coastal zones.
The written brief1 min read
What the species is and where it came from
Archispirostreptus gigas is the largest extant millipede. It is native to lowland East Africa — from Mozambique to Kenya — and Southern Arabia, especially Dhofar.
How it works, in terms someone would actually use
It curls into a tight spiral and secretes an irritating liquid from pores on its body when threatened.
What it gets right
It decomposes organic matter in rotting logs and leaf litter. It supports methanogenesis in low-oxygen microhabitats. It deters driver ants with chemical defence.
What it does not
It does not survive above 1,000 metres. It does not tolerate treeless coastal habitats.
What it changed
Nothing is stated in the sources about what it changed.
Who it is for, and who it is not
It is for ecologists studying nutrient cycling in tropical forests. It is not for high-altitude fieldwork or arid, open-coastal surveys.
Is it worth your time
Yes — if you are in lowland East Africa or Dhofar and want to see a millipede that driver ants cannot eat.