Procambarus virginalis

Basic information
Scientific name	Procambarus virginalis	Click to magnify
Major synonym	Procambarus fallax f. virginalis
Common names	Marbled crayfish, Marmorkrebs
Higher taxon	Arthropoda, Crustacea, Malacostraca, Decapoda, Cambaridae
Natural range	The native distribution of this species remains unknown. It is considered to have originated from Procambarus fallax, having arisen in captivity. Genetic analyses have indicated that the founder lineage was derived from a P. fallax population inhabiting the Everglades region of Florida, USA.
Habitat	Inhabits diverse freshwater habitats, including streams, limnetics, ponds, canals, and swamps, occurring in both lentic and lotic environments.

Invasion information
Range in Japan	Hokkaido (found in 2006, not established), Ehime, and Okinawa prefs.
Origin	Unknown
Date	About 1996 (beginning of the domestic ornamental pet trade in Japan), 2006 (first record in the wild)
Route	Presumed to be the release or abandonment of individuals maintained as ornamental pets.
Impact	Predation, habitat modification*, pathogen and parasite transmission* (*Including potential impacts)
Regulation in Japan	Import, transport and keeping in Japan are prohibited by the Invasive Alien Species Act.
Introduced range in other countries	Europe, Asia, North America, Africa (including Madagascar)