If you thought Australia’s spiders were scary, wait until you see the prehistoric version, because everyone online is losing ...

Male and female black widow spiders exhibit striking sexual dimorphism. Females are significantly larger, darker, and possess ...

UC Davis scientists uncovered Aptostichus ramirezae, a new trapdoor spider species living under California’s dunes. Genetic analysis revealed it was distinct from its close relative, Aptostichus simus ...