Eresus walckenaeri (Mediterranean Velvet Spider)Eresus walckenaeri (Walckenaers Velvet Spider) for sale These spiders like dry conditions. We keep our slings in vials with only moss, and drip two drops of water week. Feed them crushed crickets in the web or flies once a week. One of the most adorable spiders in existence, this amazing Italian species is a small species (reaching only 1. 5" legspan) and females maintains a solid black appearance. Some localities of this species have some red and