I unfortunatly also cannot contribute anything myself. But maybe its worth a try to contact Dr. Dmitry Milko (Bishkek, Kyrgystan) (firstname.lastname@example.org
). I'm just back from an expedition there and i know now that he has lots of old contacts in middle asia and knows the russian literture. So maybe he can somewhat help or they even might have material in Bishkek. I also know that a large number of specimens of their collection went to Tel Aviv through dubious ways. That might be also worth a try.