Flood-tolerant
Guides
Trachelipus rathkii
Rathke's Woodlouse
Trachelipus rathkii is a medium-sized European woodlouse introduced to North America, where it has established populations across the northern United States and southern Canada. It is distinguished by its tolerance for flooding and poorly drained habitats, often dominating riverside and floodplain communities. The species serves as a documented host for the nematode Caenorhabditis remanei, which associates with it as dauer larvae on its dorsal plates and ventral appendages.