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Sattuuko löytymään sivukuvaa? Voi olla joko ehdotettu lehmuskiitäjä (Mimas tiliae) tai sinisilmäkiitäjä (Smerinthus ocellatus).
Looks like Agaricus because it seems to have black spores.
Maybe Melitaea athalia?
It could be some Thysanura.
I's a slime mold http://en.wikipedia.org/wiki/Slime_mold
I think you mean this study:
Molecular Phylogeny of Northern Hemisphere Species of Armillaria, James B. Anderson and Elida Stasovski. Mycologia, Vol. 84, No. 4 (Jul. - Aug., 1992), pp. 505-516
Common mushroom guides just leave it to level of genus, so I think that should be fine here too.
A. borealis is the most common Armillaria species in Finland.