Care Guide

Yellow-Spotted Armadillidium gestroi

A sleek Italian isopod with subtle patterning and excellent vivarium utility.

Gestroi Isopod
📏
Adult Size
18 mm
💧
Humidity
60–70%
🌡️
Temp
65–78°F
Difficulty
Moderate
🌍
Origin
Italy / France
🔍

Overview

Armadillidium gestroi is native to Italy and France, thriving in dry Mediterranean scrubland and rocky terrain. More drought-tolerant than many Armadillidium, it prefers drier conditions and good ventilation. An underrated species that performs excellently as a vivarium cleanup crew for Mediterranean or semi-arid bioactive setups.

Common Name
Yellow spotted Isopod
Scientific Name
Armadillidium gestroi
Morph / Locale
Gestroi
Family
Armadillidiidae
Lifespan
2–3 years
Behavior
Moderately active, slightly shy
🏡

Habitat & Setup

Min. Enclosure
6 qt+
Substrate Depth
2–3 inches
Ventilation
High
Lighting
No direct light

Substrate mix: For best results, use Isopod Paradise Organic Substrate specifically formulated to support healthy colonies. If you would rather mix your own, we recommend a blend of 70% organic topsoil, 10% flake soil, 10% milled sphagnum moss, 8% organics(mushroom compost, earthworm castings and leaf litter) and 2% calcium

Hides & decor: Bark tubes and flats, leaf litter layer, moss patches, coco huts, lotus pods. Cuttlebone for calcium source.

Moisture: Lean dry. Light misting of one small corner every 5–7 days is sufficient.

🍂

Diet & Feeding

Adapted to low-nutrient, dry environments. Feeds primarily on leaf litter and decaying organic material. Supplement calcium regularly.

✓ Feed These

  • Oak & magnolia leaf litter
  • Dried wood and bark
  • Squash and carrot (small amounts)
  • Fish flakes (1–2×/week)
  • Bark tubes and flats, leaf litter layer, moss patches, coco huts, lotus pods. Cuttlebone for calcium source.

Feeding frequency: Rotate foods on a weekly basis. Remove leftover food when food begins to mold.

🥚

Breeding & Lifecycle

Slower breeder than vulgare or maculatum. Does best when conditions closely mimic its dry native habitat.

Gestation
5–8 weeks
Brood Size
Medium
Time to Maturity
4–6 months
Breeding Ease
Moderate

Mancae care: Mancae are hardy. Ensure fine food particles are available and that the substrate is not too loose or sandy for juveniles to navigate.

Colony tips: Start with a colony of 20+ adults and be patient — breeding accelerates once the colony is established. Dry conditions are critical; do not try to keep this species like a tropical isopod.

🌿 Did You Know?

Armadillidium gestroi is adapted to survive drought conditions that would stress most isopod species — they can tolerate low humidity that would be fatal to Cubaris.