
''Opilio parietinus'' is a species of harvestman. It is found in Europe and North America.
It is similar to ''O. canestrinii'', but has dark spots on its coxae, and is generally more of a grayish green color. Like ''O. canestrini'' it was often found on house walls in central Europe, but has by now almost everywhere been replaced by this invasive species.
Similar species: Harvestmen
By Pudding4brains
Public Domain
Uploaded Oct 21, 2018. Captured in Giessenweg 9, 3042 RV Rotterdam, Netherlands.
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Some more words on the Dutch populations with this image: