I study the taxonomy of new world araneid spider genera. My latest project is a revision of the genus Cyclosa.

My research facilitates identification of invertebrate animals, especially orb-weaving spiders. It has made possible identification of 1500 species in 66 genera in the Americas, and makes possible other research with these animals. Taking one genus at a time, the work illustrates diagnostic characters, makes keys for non-specialists, and provides data for phylogeny.