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Scientists Tested a Well Known Colourful Jumping Spider to Find That It Is Colorblind.

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Photo by  Angeli Ann Dinsay  from  Pexels Nathan Morehouse , associate professor at the University of Cinncinati, examined a common jumping species of spider, Saitis barbipes , found in Europe and North America. The males of this species have furry red crowns and legs. They perform courtship dances to attract their female counterparts. "We assumed they were using colour for communication. But we didn't know if their visual system even allowed them to see those colours," said David Outomoro , a researcher associated with the study. The biologists collected spiders for lab study in Germany. They used microspectrophotometry to identify the sensitivity of their photoreceptors (light-sensing cells) towards the light of different colours and wavelengths . But, they found no evidence for red photoreceptors.  Microspectrophotometry is a technique used to measure the absorption and transmission of a light spectrum. This can be measured through a microspectrophotometer. Here, the t

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