Fig. 1

Relationships among spider species in this study. See Table 1 for species abbreviations and family status. We focused on comparing minor ampullate silks between species that build cobwebs, a disordered three-dimensional web that typically catches walking prey (top graphic) and species that build orb-webs, a two dimensional wagon-wheel shaped web that catches flying prey (bottom graphic, from http://cliparts.co/spiders-web-clip-art). Relationships are based on a compilation of published spider phylogenies (see Methods). The red elbow indicates that one study [38] found the relationship shown in the figure, while another [39] switched the placement of the families to which these species belong