Rilaena triangularis - Juvenile (Schlei)
Went to check the old German WW2 bunkers Wassemann and Schlei more thoroughly on critters today and found one juvenile Rilaena triangularis in each.
This species overwinters as a small juvenile (usually in the woods) and reaches adulthood in spring, hence the Dutch name "Spring harvestman"
''Rilaena triangularis'' is a species of the harvestman family Phalangiidae. It is sometimes considered to be in the genus ''Paraplatybunus'', in the subfamily Platybuninae.