Belongs within: Neocribellatae. The Austrochiloidea are a clade of araneomorph spiders found in southern South America and Australasia that retain two pairs of spiracular openings, with the posterior book-lungs often modified into tracheae. The Australasian Gradungulidae are characterised by strongly dissimilar claws on the first two pairs of legs, together with numerous ventral spines on… Continue reading Austrochiloidea