A new Species have been found and named
Buthacus williamsi
You can read a brief note about it on the Scorpion files blog
http://scorpion-files.blogspot.com/
allso found 2 orther Interesting articles
Prey capture behavior in Heterometrus petersii
http://www.science.marshall.edu/fet/euscorpius/p2009_80.pdf
Morphological variation of Mesobuthus martensii
http://www.science.marshall.edu/fet/euscorpius/p2009_81.pdf