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That "Keys to the insects of Russia..." blowave recommended is the same contribution JariF earlier referred to as "Bei-Bienko" which is just our local term. A magnificent cold-war-era aid particularly to us in Finland, since it contains all the north-western heleomyzids in Russia.

But the problem remains that female heleomyzids remain quite hard to determine, that Russian key by Gorodkov is largely based on males.