Mystery Crayfish

This is a little different, can you help? Below is the message I received from Chris of Germany. Hi Dave, We have here a little problem with the identification of a special cray. Maybe you also know some experts who know something about this cray. It could be a Samastacus or Parastacus from Chile or somewhere from South America .( I guess) We already asked Keith Crandall , but he needs to see a form I Male to key it. The Problem is that there are no males (we contolled about 300 animals and there was no males ) Even if you rise them separate they start breeding after a while. It must be something like Parthenogenesis or Hermaphrodism. Anyway , I've send you some pics maybe they are also interesting even if the cray has no Name yet. Chris