invert

Giant African Millipede

Archispirostreptus gigas

The giant African millipede is exactly what the name suggests: a genuinely large, thick-bodied millipede that can approach a foot and a half in length, moving with the slow, rippling many-legged gait typical of the group (despite the name, no millipede actually has a thousand legs, though this species carries a very large number relative to most). It's a detritivore, not a predator, spending its life on and in the forest floor consuming decaying leaves, wood, and fallen fruit, and that role shapes almost every part of its captive care: a deep, moisture-retentive substrate to burrow in, high ambient humidity, and a diet built around decaying and fresh plant matter rather than live prey. It's also one of the gentlest, lowest-risk invertebrates commonly kept — it has no venom, its mandibles aren't strong enough to break human skin in a meaningful bite, and its only real defense is curling into a tight protective coil and, if genuinely alarmed, releasing a defensive fluid from pores along its body that can irritate skin and is harmful if it reaches eyes or mouth. That combination of impressive size and low defensive risk is a large part of why it's a popular first invertebrate for keepers who find tarantulas or scorpions too intimidating.

Husbandry

Enclosure size

A 10-gallon-equivalent enclosure at minimum for one adult, wider than tall since this species is a ground-dwelling burrower rather than a climber — floor space and substrate depth matter far more than height

Source: British Tarantula Society invertebrate husbandry guidance (checked 2026-03-04)

Temperature gradient

75-82°F (24-28°C), held fairly stable rather than a strong gradient, matching the buffered, shaded temperature of a real tropical forest floor under leaf litter

Source: British Tarantula Society invertebrate husbandry guidance (checked 2026-03-04)

Humidity

High and consistent, 70-90% — this is the single most important parameter for this species; substrate that's allowed to dry out is the most common cause of stress, poor molting, and premature death in captivity

Source: British Tarantula Society invertebrate husbandry guidance (checked 2026-03-04)

Diet

Decaying and fresh fruit and vegetables (cucumber, squash, overripe fruit), leaf litter, and decaying wood, offered regularly and removed before it molds; a genuinely varied detritivore diet rather than a single staple food

Source: British Tarantula Society invertebrate husbandry guidance (checked 2026-03-04)

Supplementation

Calcium is essential and should be available continuously (cuttlebone, crushed eggshell, or a dedicated calcium supplement mixed into food) — this species' exoskeleton has a substantial calcium demand, and deficiency is linked to poor, incomplete, or fatal molts

Source: British Tarantula Society invertebrate husbandry guidance (checked 2026-03-04)

Cohabitation

Unusually tolerant of communal housing for an invertebrate — small groups of similarly-sized individuals can be kept together in an adequately large enclosure without the fighting or cannibalism risk seen in many other commonly kept invertebrates, though adequate space and food per individual still matters

Source: British Tarantula Society invertebrate husbandry guidance (checked 2026-03-04)

Substrate

A deep layer (at least 4-6 inches) of moisture-retentive substrate such as coco fiber or a coco fiber/topsoil mix, kept consistently damp — this species burrows extensively, and shallow substrate prevents both normal burrowing behavior and successful molting

Source: British Tarantula Society invertebrate husbandry guidance (checked 2026-03-04)

Handling

Giant African millipedes tolerate gentle, infrequent handling better than most invertebrates, given their lack of venom and inability to deliver a meaningful bite, but their defensive fluid means bare-handed contact still carries a real, if minor, irritation risk — washing hands thoroughly afterward and never touching the face or eyes before doing so is a genuine precaution, not overcaution. A startled or roughly handled individual typically curls into a tight coil rather than fleeing or striking, and should simply be left alone to uncoil in its own time rather than prodded or unrolled by force. Because this species can move surprisingly quickly for its size when it wants to, handling low over a soft surface or inside the enclosure reduces the consequences of an unexpected drop, which can injure the many delicate legs even though the body itself is fairly robust.

Signs of good health

• A firm, intact exoskeleton with consistent segment coloring and no soft, sunken, or discolored patches
• Active burrowing and surface activity typical for the individual, alternating with normal resting periods underground
• Consistent feeding response to fresh food offered
• A successful, complete molt with the old exoskeleton left behind rather than partially retained on the body
• No persistent oozing, unusual odor, or visible parasites (mites) on the body segments

Common problems

12 common invert problems are tracked for this species; 0 have full guides published so far.

Recommended gear for Giant African Millipede

Equipment categories that are genuinely correct for this species' welfare needs — see the full Gear Guide for the complete list.

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