Keratosis is the term for any condition that is a benign overgrowth  and thickening of the epidermis.
Opilio Crab. Chionoecetes, the proper name of the Opilio Crab is a genus of crab that lives in the colder waters of the northern Pacific and Atlantic Oceans. The Opilio Crab is very spider like in appearance and has four pairs of legs that are quite spindly looking.hionoecetes, the proper name of the Opilio Crab is a genus of crab that lives in the colder waters of the northern Pacific and Atlantic Oceans. The Opilio Crab is very spider like in appearance and has four pairs of legs that are quite spindly looking.
Opiliones are arachnids, but not spiders. They have no venom glands at all and are absolutely not venomous. The nickname 'daddy longlegs' may also refer to a crane fly, which is a true fly and a member of the order Diptera. Crane flies do not pose a threat, either. Sometimes, the name 'daddy longlegs' is used for another group of arachnids, the spiders of the family Pholcidae. These spiders are also commonly called cellar spiders and they do have venom glands.