Strange but True: Spiders Need UV Light to Feel Amorous

Forget turning out the lights to give jumping spiders privacy for mating














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Land says his colleagues have "big, big plans" to do just that—to look at other species and determine whether this type of signaling is unique to C. umbratica or more widespread. Whatever these further experiments reveal, this much is already clear: one species, for ultraviolet light at least, seems to have reached some sort of consensus on the age-old lights on–lights off debate.


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Strange but True: Spiders Need UV Light to Feel Amorous

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