Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Avarua is a spider genus of the Salticidae family (jumping spiders). Its only described species, A. satchelli, is endemic to Cook Islands.The jumping spider family (Salticidae) contains more than 500 described genera and about 5,000 described species,making it the largest family of spiders with about 13% of all species. Jumping spiders have good vision and use it for hunting and navigating. They are capable of jumping from place to place, secured by a silk tether. Both their book lungs and the tracheal system are well-developed, as they depend on both systems (bimodal breathing).