links Triangulate Household Spider Steatoda triangulosa Images on BugGuide.net The World Spider Catalog University of Arkansas Arthropod Museum Notes: Triangulate cobweb spider https://web.archive.org/web/20060314011949/http://www.puyallup.wsu.edu/plantclinic/resources/pdf/pls107steatodaspider.pdf Penn State University Dept. of Entomology: Commonly Encountered Pennsylvania Spiders Levi, H.W. 1957. The spider genera Crustulina and Steatoda in North America, Central America, and the West Indies (Araneae, Theridiidae). Bull. Mus. Comp. Zool. 117(3):367-424 Descriptions of four Steatoda species found in New Zealand pictures Hobospider.com: Steatoda spiders as competitors/predators of the hobo spider Steatoda Spiders of Europe Spiders of Asia