Western Black Widow (Latrodectus hesperus): Since she’s not fully grown and all-black in color yet, you might not recognize this beautiful spider as a juvenile female black widow. Black widows are not aggressive (will not attack you), but they will defend themselves or their egg sacs if you mistakenly grab or step on them. They have incredibly strong venom and a painful bite. Symptoms include: pain in the chest / abdomen, muscle cramping and spasms, difficulty breathing, nausea, chills, a severe increase in blood pressure, and more. This is the very reason a friend asked us to help remove this specimen from her garage. She now has a home at the Insectarium. Photo by Glenn Marangelo on 8/25/18 in Lolo, MT.