At the higher level, the phylogeny of spiders is now often discussed using informal clade names, such as the " RTA clade ", the " Oval Calmistrum " clade or the " Divided Cribellum " clade.
22.
The fibers are pulled out by the calamistrum, a comb-like set of bristles on the jointed tip of the cribellum, and combined into a composite woolly thread that is very effective in snagging the bristles of insects.
23.
Following the branching into the suborders of Mesothelae and Opisthothelae, the mygalomorphs retained them, while their fellow Opisthothelae members the araneomorphs evolved new " modern " features, including a cribellum and cross-acting fangs ( Coddington & Levy, 1991 ).
24.
Although cribellate and non-cribellate orb weavers had earlier been placed in the same taxon ( from at least 1789 ), the two kinds of orb weaver were placed in separate taxa after the possession of a cribellum was prioritized over the form of the web.
