Armadillidium germanicum 'Darth Vader' Isopods

Not every showpiece isopod has to be a tropical rarity. The Darth Vader is the trade name for Armadillidium germanicum, a hardy pill bug from northern Italy, and the name earns itself the moment one rolls up: a dark, glossy sphere that really does read as a certain helmet. That is drama on an animal that lives at ordinary room temperature for most of the year. Every colony we send is captive-bred here in the UK.

Introduction

The base species is Armadillidium germanicum, described by Verhoeff in 1901 from a single female found above 1,000 metres in South Tyrol: a pill bug from one small corner of northern Italy. A nice quirk sits in the name, because although germanicum means "German", every occurrence record we can find is Italian and all of them sit in Trentino-Alto Adige, the Adige Valley area that sellers generally give as the source of hobby stock. One seller still calls the species Central European, but we can find nothing that puts a wild population in Germany or Austria. 'Darth Vader' is not ours alone either: several other sellers list the species under the same name, which describes something real about the animal, much as "Magic Potion" does for a particular A. vulgare morph. Compare it across the Armadillidium range, or read my Darth Vader isopod care guide for its history and full set-up.

Appearance

Verhoeff's 1901 description gives it a grey-black ground colour, fine whitish edges to the body segments and yellowish spots in a single row down the middle, and the animals in our photographs match it: dark slate to grey-brown, with the spots anywhere from lemon to orange, so expect some variation across a colony rather than uniform jet black. Startled, it draws into the tight, complete sphere the genus is known for, and in a dark animal that rolled ball is much of its appeal. On size we have had to retreat. This page used to call it substantial at 13 to 22 mm. Verhoeff gave no size when he described it and we have found no published measurement since; two sellers give 12 to 16 mm, the figure on our care panel, one stops at 13 mm and one says about 2cm. That is mid-range for the genus, under the 21 mm published as the maximum for A. werneri and below A. vulgare 'Big Italy'. The draw here is the colouring and the roll, not the bulk.

Care

At medium difficulty the germanicum asks for less than the fussier Mediterranean species, but it rewards steady conditions. Aim for 18 to 24°C and 50 to 70% humidity on a gradient: one damp side with sphagnum and leaf litter, the rest drier, since it dislikes both a waterlogged tub and an arid one. An English home averages about 19°C over the heating season, so a heated room covers that band for most of the year; in an unheated room that falls below 18°C, add a heat mat or heat cable on a thermostat, on the side of the tub and never underneath. Give a deep, moisture-retentive substrate of organic topsoil, flake soil and rotting hardwood rather than coco coir, with plenty of cork and bark for the under-stone shelter it favours. Supplement calcium generously. Our calcium guide has the detail.

Diet

An unfussy detritivore: a constant base of mixed hardwood leaf litter and rotting wood, vegetable once or twice a week, the occasional soft fruit, and protein such as fish flake or dried shrimp for the breeding females. Keep calcium available at all times, and lift uneaten fresh food within a couple of days. A springtail culture grazes the soft mould around the damp corner.

Breeding

The germanicum breeds reliably once a colony settles, at a moderate, steady pace rather than in a flood. A well-established group of six months or more is far more productive than a freshly set-up one, so give it good calcium and plenty of cover for gravid females, and let it get on with it undisturbed.

Who is this for?

The Darth Vader suits the keeper who wants a dark, dramatic Armadillidium, the collector building an Italian cluster, and, yes, anyone who will enjoy the helmet gag every time the colony rolls up. Try an easier morph like Magic Potion or the bright Clown first if you are new to the genus. It is not for anyone who wants bright colour across the whole animal, or an isopod that does not roll.

Every colony is captive-bred from established UK stock and ships under our live arrival guarantee, in a ventilated deli tub with damp sphagnum inside a double-walled box. We dispatch Monday to Thursday by Royal Mail Tracked 24, or Special Delivery Guaranteed by 1pm if you choose Next Day at checkout, with a 20% overcount included.