Inkagirskoie Ploskogorie? Never heard of such There is Yukagirskoie Ploskogorie. Anyway, it's impossible for Brahmaea to be found in Yakutia. It occurs only in the south of Primorie Territory (Primorsky Krai) - Far East of Russia. Near Vladivostok
Apparently, the supplier of ova has reported you the wrong locality data, sorry.
The moths are gorgeous, anyway! Congrats with the good breeding!