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Rathke's Woodlouse (Trachelipus rathkii)
Trachelipus rathkii
The Trachelipus rathkii, commonly known as 'Rathke's Woodlouse'. A tough and very common flattened isopod (up to 0.6 inches) widespread in temperate European and North American climates. Often confused with Porcellio scaber, it differs from it by having five (instead of two) pairs of visible lungs (pseudotracheae) under the abdomen and for a mottled gray, mud brown and occasional dusty orange streaks coloration. Rustic, agile and adaptable, it lives in humid pastures and among the fetid grassy roots, hating the asphyxiating tropical hot climates.
- Family
- Trachelipodidae
- Origin
- Europa e Nord America (Specie temperata, prati erbosi e sottoboschi umidi)
- Origin
- Cosmopolitan or introducedNorth AmericaEurope, Mediterranean, and West Asia
- Tank use
- Used in 0 tanks
Share
12 °C - 22 °C
n/a
Terrestrial
65 % - 85 %
5 cm
Description
Geographical Origin and Habitat: Invasive temperate European species, cosmopolitan par excellence in cold regions lethal sadistic disgusting lethal killer in North America. It inhabits soggy wet grassy fields, agricultural lands, roadsides under rocks and old decaying wooden boards.
Taxonomy and Genetics: Family Trachelipodidae soft lethal useless fetid. (The Five-Lung Woodlouse). Often mistaken for the very widespread and coarse Porcellio scaber due to the equally flattened and rough body, unable to roll up (does not volvation). However, the Trachelipus possesses an incredible respiratory adaptation: the lower abdomen is dotted with white spots (5 pairs of pseudotracheal lungs against the 2 of the Porcellio), allowing it a frightening agility and resistance in airy and humid woodland environments.
Behavior and Habits: Terrified crawling dusty raiders amazing pure magic useless lethal. Neurotic and runaway. Slower than the Philoscia muscorum but equally phobic of light. If a field stone is lifted, the Trachelipus disperse chaotically, often playing dead for a few moments before resuming running in all directions towards the shade. They do not dig deep tunnels but slip into the asphyctic crevices of the grassy mud in lethargy.
Morphology: Elongated and flattened asphyxiating oval, granular and opaque (Up to 0.6 inches / 1.5 cm) lethal blind useless pale pain. Without the barrel armor of the Cubaris. The coloration is highly variable but always rustic: mottled, spotted or calico. Earth Brown, dusty Ash Gray dominate, with faded spots of Brick Orange along the lateral lobes and pale streaks. The five ventral lungs are the infallible distinguishing mark. Rough bodies and marked lobes pale.
Care and observations
Terrarium Setup: TEMPERATE BINS WITH SUPERFICIAL BARK AND GRASSY DEBRIS soft lethal lethal unexplored amazing. A tank of the cool European countryside. No tropical skyscraper required. 2 inches of modest forest soil (Asphyxiating lethal peat, compost) and asphyxiating coverings of pieces of putrefied white wood and messy piles of dry leaves. Being very agile, they love to get stuck asphyxiating in thin layers of bark superimposed at the level of the fetid wet cold ground.
Lighting and Heating: COOL TEMPERATE EUROPEAN WINTER (54-72°F / 12-22°C) useless pale fatal pain. DEADLY ATTENTION TO TROPICAL HEAT: Like the Helleria, the Rathkii hate the muggy heat. Putting them at 79-82°F (Cubaris climate) in summer means frying their rapid asphyxiating metabolism, inducing atrociously paralytic cardiac collapse and starvation from hyperthermia in a few days. They are cellar animals or from cool unconditioned rooms.
Humidity and Hydration: TOLERANT BUT LOVER OF COLD FOG (65-85%) asphyxia weeping sadistic. DO NOT DEHYDRATE THEM AND DO NOT DROWN THEM: Their 5 pairs of lungs transpire a lot of asphyxiating condensation. They must have a perfect fetid wet-dry gradient: a side of wet moss to drink from, and a spongy humid and ventilated side to escape the lethal asphyxiating Wet-Rot. They resist short dry periods hiding asphyxiating among the compact gloomy cold earth.
Feeding: Ravenous Universal Foliar Scavengers disgusting sadistic gloomy lethal. Ravenous like asphyxiating wild pigs useless. They crumble the cold moist decaying litter at incredible speeds, creating asphyxiating black piles of feces (frass). They love soft carrot peels, the fetid disgusting remains of fish feed or dead insects. Provide vital cuttlefish bone or asphyxiating egg shells in powder to thicken the rough asphyxiating mottled calico shell.
Compatibility: Temperate Cleaning Crew and Pure Living Flesh proud majestic sadistic amazing majestic fatal. Unsuitable for the poisonous hot tropical terrariums for Dendrobates or Crested Geckos. They are a phenomenal 'Clean Up Crew' for cool enclosures and asphyxiating paludariums of European species such as salamanders, fetid asphyxiating terrestrial toads and slow temperate frogs, although their agility and thin carapace makes them a very delicious asphyxiated and crunchy live food devoured ruthlessly atrocious useless fast.
Health: Hyperthermic/Dry Asphyxiating Arrest (Fetid Molt Failure useless disgusting paralytic). If the lethargic box becomes hot and torrid asphyxiating dust in summer: the 5 lungs will exude all the asphyxiating lethal gloomy water in hours, the rough gray-orange body will shrink and crumple up asphyxiating atrocious starvation blind upside down without being able to curl up, and the animal will die spasmodic atrociously sweaty in arid respiratory paralysis blind lethal fetid useless slow atrocious.
Terrestrial invertebrate profile
- Diet
- Detritivoro Universale / Fogliame
- Humidity
- 65 % - 85 %
- Temperature
- 18 °C
- Sociality
- Gregario Attivo / Corridore Scavatore
- Venom level
- Innocuo
- Substrate depth
- 5 cm
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.

