Just wanted to post that the map of Marmorkrebs introductions has just been given a big update. In particular, it now includes all the locations listed in Chucholl et al. (2012). The map is not identical to Table 1 in that paper, however. The table only includes locations where there were either pictures of crayfish or voucher specimens to confirm the identification; my map includes some without those.
I’ve also used different placemarkers to distinguish locations with populations (dot in the middle of the placemarker) and those where there are single specimens, or the status is unclear (no dot).
Chucholl C, Morawetz K, Groß H. 2012. The clones are coming – strong increase in Marmorkrebs [Procambarus fallax (Hagen, 1870) f. virginalis] records from Europe. Aquatic Invasions 7: 511-519.