Spidey Eyes For Save A Spider Day

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Diagram of a Salticid eye, from the paper, “‘Eight-legged cats’ and how they see”. Illustration: Fair Use; OA primary research

Save A Spider Day is March 14. The fear of spiders is called arachnophobia and is estimated that in the Western world as many as 55% of females and 18% of males have arachnophobia. Which is too bad, because without spiders, we would live in an awful world full of insects, because that is what spiders do… eat insects. Not only that spiders help in sustainable gardening, their venom is used medically, they make silk, not just used for clothing, but also for medical devices.

Female Jumping Spider eye macro
Female Jumping Spider eye macro

Spiders have up to eight eyes, but poor eyesight. A few spiders have the ability to detect polarized light which helps them hunt at night. There are all types of spider eyes, Search light eyes, multi- purpose vision, reflector eyes and direct eyes.

Diagram of a Salticid eye, from the paper, “‘Eight-legged cats’ and how they see”. Illustration: Fair Use; OA primary research
Diagram of a Salticid eye, from the paper, “‘Eight-legged cats’ and how they see”. Illustration: Fair Use; OA primary research
Thomas Shahan: Creative Commons
Thomas Shahan: Creative Commons

Fortunately for us, most spiders are not poisonous, unless you are allergic. Just because they are venomous, doesn’t not mean that you will die from a spider bite.

Resources

VEW Mid-Page 19