Dubrovnik Isopods (Armadillidium Klugii)

Of the five Armadillidium klugii lines we keep, this is the one with the best paperwork. Dubrovnik and its Lapad peninsula are the localities that come up most often in the 2013 revision Schmalfuss wrote of this group, so a listing that says Dubrovnik is pointing at somewhere the scientific literature actually records. In a genus where most morph names turn out to be marketing, that counts for something.

The animal

Deep black ground, three rows of pale dots down the back, red or orange edging along the flanks in most individuals. It is among the boldest patterns on any European isopod and it reads from across a room. Adults sit at 14 to 18mm.

What Dubrovnik gives you over the broader Montenegro label is consistency. Because the source population is a defined place rather than a country, the animals in a group tend to look like one another, which matters if you are photographing them or selecting from them. It does not make them larger, redder or rarer, and anyone telling you otherwise is guessing.

A word on that 2013 revision, since it explains some confusion you will meet. Schmalfuss folded three previously separate names into klugii, so older European stock still circulates under labels that no longer describe anything distinct. If you are offered something with an unfamiliar Balkan epithet, that is very often what has happened.

Conditions, and why the habitat explains them

Think about where this animal actually lives: wedged under stones and into rock crevices on a limestone coastline that bakes in summer. That is not a rainforest floor, and treating it like one is the usual mistake.

So build a dry box with a wet corner rather than a damp box with a dry patch. Fifty to seventy per cent is the working band, and the enclosure needs air moving right across it rather than seeping through a few holes in the lid. Warmth matters more than most people expect: they hold on indefinitely in an unheated British room and barely increase, and the most reliable single change that gets a stalled colony producing is lifting it into the low twenties.

Stack flat bark and stone so they have crevices to occupy, since a crevice animal given only open floor will spend its life underneath the food dish. Keep chalk available at all times, cuttlebone or crushed limestone, because sealing into a ball this tightly takes a heavily built shell and that shell is being maintained continuously. Our calcium guide runs through the options.

Who it suits

A second or third species. Hard to kill, moderately fiddly to breed, and slow enough at the start that beginners assume something is broken when nothing is.

The full comparison of every klugii line, including which names survive checking and which do not, is in our guide to the species. Alongside this we keep the standard Montenegro Clown and the white-patched Skeleton and Nebula line, with the drier Mediterranean species in the wider range.

One thing worth asking any seller, us included. Since 2020 people have deliberately crossed klugii with A. versicolor and sold the offspring as Twisted Clown, so unlabelled lines started after then carry a question. Ours is kept isolated and bred here.

Orders leave on moistened sphagnum inside a vented pot, cushioned in a carton of doubled card. Dispatch is Mondays to Thursdays, nothing afterwards, so no parcel of ours meets a weekend. Tracked, next-day, before 1pm, with extras above your count and live arrival guaranteed.