naturebriefs
SubjectsAll subjects on briefs.cloud →
Saved
Insects & invertebrates · Systems

Archispirostreptus gigas

Driver ants cannot eat it — and that makes it ecologically exceptional.

Worth your time?4/5Yes.See the whole thing.What works, what does not, who it is for ↓
9:48in productionCh. 1 · Size/ 9:48 · ceiling 15 min
6 chapters · 9:48Ceiling 15:00

The brief is written and checked. The video joins this page when it is cut.6 chapters · 1 min read · 9:48 planned

Read the brief

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.

Insects & invertebratesSystemsEast AfricaEcologyInsectsEast Africa across the network →
Chapters & takeaways6
  1. 0:50
    Size

    It grows up to 33.5 cm — the longest millipede alive.

  2. 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. 3:02
    Defence

    It coils and secretes toxic quinones — making it immune to driver ant predation.

  4. 4:10
    Legs

    It has ~256 legs — but the count changes with each molt.

  5. 5:12
    Diet & Habitat

    It feeds on decaying plant matter in rotting logs and leaf litter.

  6. 6:35
    Ecological Role

    It aids nutrient cycling and methanogenesis in low-oxygen microhabitats.

3 more chaptersFewer chapters
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.
Who should see it, and who should skipHide who it is for
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.

Same habitat · Insects & invertebrates4 of 40
8:25
PhylliidaePhylliidae are stick insects whose entire morphology—from flattened bodies and lobed legs to sexually dimorphic wings—serves one function: leaf mimesis. Observed across tropical regions from the Seychelles to eastern Melanesia, they feed on plant leaves and rely on stillness and form rather than motion or sound. Only adult females stridulate, using antennae. Most females cannot fly; males fly only briefly. No lifespan, population data, conservation status or behavioural ecology beyond these points is given.
9:50
Weaver antWeaver ants are obligately arboreal eusocial insects in the genus Oecophylla, found in tropical and subtropical regions—especially southeast Asia—where they live exclusively in trees. Colonies can contain more than half a million workers across hundreds of nests spanning multiple trees. Workers construct nests by weaving leaves together using silk secreted by larvae. Major and minor workers show a clear bimodal size distribution and strictly divided roles: majors forage, defend, maintain, and expand; minors care for brood and milk scale insects for honeydew. They prey on small insects and aggressively defend territory. Though lacking a sting, they inflict painful bites and spray formic acid directly at the wound. Indigenous farmers in southeast Asia use them as natural biocontrol agents against agricultural pests.
8:14
DragonflyDragonflies are Anisoptera: flying insects with ~3,000 species, mostly tropical, dependent on wetlands, distinguished by flat-held wings and eyes with ~24,000 ommatidia each. Their structural iridescence makes them conspicuous in flight. Wetland loss threatens them globally.
8:47
TermiteTermites are cockroach-derived eusocial insects that consume decaying plant material across all continents except Antarctica. They form colonies ranging from hundreds to millions of individuals and originated in the Late Jurassic. Colonies function as superorganisms. Around 2,997 extant species exist, mostly in the family Termitidae. They belong to the infraorder Isoptera or epifamily Termitoidae within Blattodea. Phylogenetic studies confirm they evolved from cockroaches and are sister to Cryptocercus.
Up next in Nature

Scolopendra gigantea

· 8:49

The world’s largest centipede climbs cave ceilings to snatch bats—and kills mice, lizards and snakes with venom linked to a human fatality.

Next brief →Back to Insects & invertebrates
8:49