 Portia is in the subfamily Spartaeinae , which is thought to be primitive . : 491 Molecular phylogeny , a technique that compares the DNA of organisms to reconstruct the tree of life , indicates that Portia is a member of the clade Spartaeinae , that Spartaeinae is basal ( quite similar to the ancestors of all jumping spiders ) , that Portia ′ s closest relative is the genus Spartaeus , and that the next closest are Phaeacius and Holcolaetis . : 53 
