10 Spiders In Montana
#10: Red-Backed Jumping Spider Phidippus johnsoni, or the red-backed jumping spider, is one of the most notable jumping spiders in Montana. A member of the family Salticidae, it ranges widely throughout western North America from Canada to Mexico. Adult red-backed jumping spiders typically measure around 10 millimeters long, with females measuring larger than males. They feature large, bright teal mouthparts and characteristic bright red abdomens, hence their name. You can differentiate the females from the males by the black stripe down the center of their abdomens....