UV and Fluorescence in a Jumping Spider

Spiders’ Glowing Key to Courtship, Mating

“Male jumping spiders reflect UV light using patches of scales on their faces and bodies that are displayed during mating stances. But females, when in the presence of UV light, give off green fluorescent light from their palps, small appendages close to their faces.

Scientists were led to study the animals because they have eyes particularly sensitive to ultraviolet and green light. The researchers quickly found that spiders showed no interest in members of the opposite sex that were not glowing.”


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