Armadillidium Scaberrimum “Sandstone”

Sandstone Isopods for Sale

Sandstone is the hobby trade name for Armadillidium scaberrimum, a hardy textured pill bug from the Dalmatian coast and surrounding Balkan region. This listing is a live starter culture from TC INSECTS, packed for

beginner and intermediate keepers building an Armadillidium shelf, a Mediterranean display culture, or a forgiving cleanup partner for a bioactive vivarium. The species was formally described by Stein in 1859, and the

species name scaberrimum is the Latin superlative of scaber, meaning “very rough” or “roughest,” which is exactly the tuberculated texture the species is known for.

Overview

Sandstone sits in the hardier, more forgiving end of the Armadillidium spectrum. The body has a pronounced bumpy or tuberculated surface, often described as shark-skin or sandstone in texture, with pale beige, tan, gray,

and cream tones that give the trade name its anchor. Conglobating behavior gives the species classic pill-bug presentation, and the textured carapace makes it a strong display choice for naturalistic setups using stone, bark,

and dried botanicals.

Unlike many Armadillidium species that need a fairly narrow care window, Sandstone handles a wider range of conditions. Multiple hobby sources describe the species as adaptable from semi-arid to borderline subtropical, which makes it forgiving for beginners and a good cleanup partner for keepers who do not run their isopod bins on identical husbandry rules.

Why Keep Sandstone?

• Distinctive texture: Bumpy tuberculated surface that few other commonly available isopods match, ideal for naturalistic stone-and-bark displays.
• Conglobating behavior: Rolls into a tight ball when disturbed, a classic display behavior of the genus.
• Wide climate tolerance: Handles semi-arid to borderline subtropical conditions, broader than most Armadillidium species.
• Easy breeding pace: Moderate to prolific colony growth once established, with large broods at regular intervals.
• Armadillidium shelf fit: Pairs naturally with Armadillidium klugii “Pudding” and Armadillidium tunisiense “Eastern Clown” on a Mediterranean and Balkan shelf.

Honest Note on the Armadillidium omblae Historical Name

Sandstone has gone through some hobby name confusion. The species was previously labeled as Armadillidium omblae in older listings, and you will still see some sellers use that name today. Current taxonomy treats A.

scaberrimum Stein, 1859 and A. omblae as separate species, with the Sandstone hobby line correctly placed as A. scaberrimum. If you have records or stock from years ago labeled A. omblae, those animals may or may not

be the same as today’s Sandstone trade line. Label your culture as A. scaberrimum to keep records traceable as the literature catches up.

Honest Note on Climate Tolerance

Sandstone is more flexible than typical Armadillidium care advice suggests.

The species handles a range from semi-arid to moderately humid, which is useful for beginners but creates two pitfalls.

First, the wide tolerance does not mean the species needs zero moisture: a moist retreat is still essential, especially during molts. Second, the species does not need the heavy humidity used for tropical Asian isopods, so applying Cubaris-style care will eventually cause mold problems.

Aim for a moisture gradient with a clearly damp moss side and a noticeably drier feeding side, and ventilate well.

Care and Setup

Sandstone care is built around four things: stable warmth, a moisture gradient, steady airflow, and consistent calcium availability. The species is hardy, but it still needs the basics done correctly.

Temperature

Aim for 68 to 78°F as the everyday range. Room temperature works for most keepers. The species handles modest fluctuations better than many Armadillidium species, but sustained heat above the mid-80s still dries out small cultures.

Humidity

Keep one side of the enclosure damp with moss and substrate, and let the other side stay noticeably drier. The substrate should not be uniformly wet. If condensation never clears from the lid or the substrate smells sour, ventilation needs to come up.

Substrate

Use an isopod substrate blend that holds light moisture without compacting. A coco fiber base mixed with decomposed hardwood, sphagnum, and a small amount of clay or worm castings is reliable. Adding crushed limestone or oyster shell supports the heavy exoskeleton this species develops as it matures, which is especially important given the tuberculated texture.

Food

Leaf litter and decaying hardwood should always be available. Supplement with TC INSECTS Isopod Food, calcium, and small portions of vegetables. This species has a strong feeding response and will swarm offered food, so portion sizes can be larger than for shyer species without leading to immediate mold problems.

Ventilation

Cross-ventilation works best. Two side vents or a vented lid beats a single small airhole. Good airflow is the safeguard against the sour-substrate problem that crashes Mediterranean isopod cultures most often.

Bioactive Use

Sandstone works well in bioactive enclosures with moderate humidity and a clear moisture gradient. It is a good cleanup partner for reptile and skink setups that do not run heavily wet. For dart frog vivariums and other tropical setups, a more humidity-tolerant species like Dwarf Whites is a better fit.

Breeding Notes

Mature females are slightly larger than males and carry developing young in a brood pouch called a marsupium. Sandstone is among the easier-breeding Armadillidium species in the hobby, with hobby sellers consistently describing it as prolific once the culture is established.

Broods can be sizeable, though they may not be continuous: keepers often report large brood releases followed by quieter periods. Stable temperature, calcium availability, and a reliable moisture gradient are the most important inputs.

Best For

• Beginner and intermediate keepers wanting a hardy Armadillidium species
• Display cultures focused on textured naturalistic pill bugs
• Bioactive vivariums with moderate humidity and a clear gradient
• Collector shelves featuring Mediterranean and Balkan Armadillidium
• Reptile and skink keepers looking for a cleanup partner with feeder potential

Not Best For

• Fully sealed wet tropical setups (use Cubaris murina “Little Sea” instead)
• Dart frog vivariums running high humidity year-round
• Keepers who want bold high-contrast color (Sandstone is intentionally earthy and subtle)
• Heavy-density mass-cleanup feeder use as a sole species (combine with Porcellio laevis “Dairy Cow” for higher-volume work)
• Sterile or completely freshly built enclosures with no leaf litter or decaying wood

Origin and Locality Notes

The species was described by Stein in 1859 with type locality in Dalmatia, a historical coastal region that now spans modern Croatia and surrounding parts of Bosnia and Herzegovina and Montenegro. Independent hobby

sources consistently associate the Sandstone trade line with Croatia or the broader Balkans, which matches the type locality. Captive hobby culture lines may not trace to a specific Dalmatian population, so manage this as a

captive line with known husbandry needs rather than a strict locality animal.

Receiving and Acclimation

Bring the package indoors as soon as it arrives and open it in a calm area away from direct sun, heat, or cold drafts. Prepare the enclosure before opening the cup so the isopods move directly into a stable environment with substrate, leaf litter, bark hides, a moist moss retreat, calcium, and a drier feeding zone already in place.

Gently tip the cup contents, including shipping material, into the prepared enclosure near the moist side. Some animals will stay curled or hidden during the first few days because conglobating species often roll up when stressed. Sandstone tends to settle faster than more sensitive Armadillidium species, but still feed lightly during the first week and avoid digging through the culture during the settling period.

Recommended Add-Ons

• TC INSECTS Premium Isopod Habitat Kit for a straightforward starter setup matched to the moisture-gradient approach
• TC INSECTS Assorted Hardwood Leaf Litter for food, cover, and the natural grazing layer
• TC INSECTS Isopod Food to supplement leaf litter for the strong feeding response of this species
• TC Calcium Ultra Fine for healthy molts on this heavily textured pill bug
• Springtails to handle mold in the moist retreat alongside the Sandstone culture

Frequently Asked Questions

Are Sandstone isopods beginner-friendly?

Yes. Sandstone is one of the more beginner-friendly Armadillidium species in the hobby because of its wider climate tolerance, sturdy build, and easy breeding pace. As long as the moisture gradient is set up correctly and calcium is available, most beginners will have a stable colony in the first few months.

Why is this species called Sandstone?

The trade name comes from the pale beige, tan, and gray earthy coloration combined with the bumpy tuberculated body texture. The scientific name scaberrimum reinforces the texture story, since the Latin word means “very rough” or “roughest.” Both names describe what the animal actually looks like.

Was this species ever called Armadillidium omblae?

The Sandstone hobby line was previously labeled as Armadillidium omblae in older listings. Current taxonomy treats A. scaberrimum and A. omblae as different species, with the Sandstone line correctly placed as A. scaberrimum. Some sellers still use the older name, so cross-check listings before buying from elsewhere.

Can Sandstone tolerate drier setups?

Yes, more than most Armadillidium species, as long as a moist retreat is always available. A fully dry enclosure still kills the colony. The right setup has one damp moss area and a noticeably drier feeding zone on the other side.

Can Sandstone be used as a feeder for reptiles?

It can, especially for bearded dragons, skinks, and other invertivores that accept a textured isopod. Many hobby sellers position this species as an alternative to Porcellio laevis for feeder use. That said, the breeding pace is moderate to prolific rather than explosive, so a dedicated culture is needed to keep up with sustained feeder use.

How fast will the colony grow?

Moderate to prolific once established. Hobby sellers consistently describe Sandstone as easy-breeding and capable of large brood releases. Expect visible juveniles within the first month or two and a noticeable colony increase over the following months in a stable culture.

Learn More About Armadillidium and Dalmatian Isopods

The following references offer useful background on the species and the broader pill bug family it sits in.

• World Register of Marine Species: Armadillidium scaberrimum Stein, 1859. The authoritative species record, including type locality (Dalmatia) and the original 1859 description reference, useful for confirming the scientific name and origin.

• British Myriapod and Isopod Group: Woodlouse and Waterlouse Recording Scheme. Background on the wider terrestrial isopod group from a long-running scientific recording body, helpful for understanding how pill bugs and other woodlice live, feed, and reproduce.

• Natural History Museum: Giant isopods, curious crustaceans on the ocean floor. A short, plain-language overview from the NHM that puts the woodlouse family in context with their marine relatives.