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You are right, too many things in my head when I did this post:S

And also there is variation in the middle outgrowths of testaceus...

As I don't 'have testaceus in my region I will not do anything at the moment, but may be you and they are right and testaceus-tuvensis-dispar is the same species.

And if you want to improve my english version of the russian key, is here:
https://www.dropb....docx?dl=0

(as you have read english is not my mother language)

Rafael