Western Black Widow (Latrodectus hesperus): It may not be the first image that pops to mind …but this is an immature western black widow. Based on the shape of the abdomen, it is likely a female …but the spiderlings of both sexes have similar coloration. Males of the western widow are half to one-third the size of females, with an elongated body form. Just like the females, males pack potent venom but have smaller venom glands and smaller fangs, making it unlikely that a male could penetrate the skin of an adult human. Contrary to what many people think, widows are not aggressive spiders. They rarely, if ever, bite when not within a web and generally only bite if handled or inadvertently “squished”. Photo by Taylor Chenette on 8/7/17 near Drummond, MT.