Foto scattata al Lago di Lolair (Valle d'Aosta). Si tratta di una nursery web costruita da un esemplare di Clubiona sp. piegando le foglie di Phragmites (cannuccia di palude).
The sac spiders of the family Clubionidae have a very confusing taxonomic history. Once this family was a large catch-all taxon for a disparate collection of spiders, similar only in that they had eight eyes arranged in two rows, conical anterior spinnerets that touched and were wandering predators that built silken retreats, or sacs, usually on plant terminals, between leaves, under bark or under rocks. These are now recognized to include several families, some of which...
