Giant African Millipede (Archispirostreptus gigas)

Overview

The Giant African Millipede (Archispirostreptus gigas) is one of the largest millipedes in the world - adults reach roughly 25-30 cm (10-12 inches) and the thickness of a thumb. Slow, docile, and genuinely beginner-friendly, it is a detritivore that spends its life eating decaying leaf litter and rotting wood. It needs a warm, humid tank with deep moist substrate to burrow. Harmless to handle (no bite, no sting), though it secretes a mild defensive fluid - wash hands after handling.

Natural History

Native to the tropical forests of West and Central Africa, mostly near the equator. A detritivore - it breaks down dead plant matter on the forest floor and returns nutrients to the soil. Nocturnal and burrowing. Despite "millipede" meaning thousand feet, it actually has a few hundred legs, two pairs per body segment.

Legal Status

Generally legal as a pet in most of Europe and many other regions. In the United States, live giant African millipedes are restricted - USDA permits are required for import and interstate movement because of the harmless but unwanted mites they often carry, and they are not freely sold. Check local laws before considering.

Appearance

Adults 25-30 cm long, occasionally larger, and as thick as a thumb. Glossy dark brown to black cylindrical body made of many ringed segments, each with two pairs of short legs. Often carries small reddish mites on its body - these are harmless and usually a sign of a healthy animal.

Temperament & Handling

Slow, calm, and easily handled - among the safest exotic pets for children. It has no bite and no sting. When startled it curls into a tight spiral and may release a mild defensive fluid.

Wash hands after every handling and never rub your eyes - the defensive secretion can stain skin yellow-brown and irritate eyes and broken skin. Handle low and over a soft surface; falls can crack the exoskeleton.

Enclosure

Minimum: 40 × 30 × 30 cm for one adult; larger for multiples.

Provide:

• Deep organic substrate (10-15 cm) - coco fibre mixed with rotting hardwood leaves and decayed wood; keep moist so the animal can burrow.
• Pieces of rotting wood and dead leaves as both shelter and food.
• Cuttlebone or calcium source for the exoskeleton.
• Hides and bark.
• A shallow water dish.
• Tight-fitting, ventilated lid.

Heating, Humidity, Lighting

• Temperature: 24-28°C.
• Humidity: 75-90%. Mist regularly and never let the substrate dry out.
• No special lighting needed - they are nocturnal and avoid bright light.

Diet

Detritivore: the bulk of the diet is decaying leaf litter and rotting hardwood, which should always be present in the substrate. Supplement with soft vegetables and fruit - cucumber, zucchini, sweet potato, pumpkin, banana, apple. Calcium source (cuttlebone or crushed eggshell) is essential for the exoskeleton.

Avoid: citrus, onion, garlic, salt, and anything treated with pesticides. Wild-collected leaves and wood must be from untreated, pesticide-free sources.

Health & Lifespan

7-10 years.

Common concerns:

• Exoskeleton damage from falls.
• Dehydration if humidity drops - the most common killer.
• Calcium deficiency - soft or weak exoskeleton.
• Mites - the small mites they carry are harmless; only an unusually heavy infestation needs attention.
• Failed moult if substrate is too dry; they bury to moult and are fragile afterward.

Pros & Cons

Pros: safe and easy to handle, child-friendly, low cost, quiet, long-lived for an invertebrate. Cons: restricted in the US, needs constant humidity, defensive secretion stains and irritates, easily harmed by a fall.