- Joined
- Feb 28, 2003
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- 51,246
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- Location
- Huntsville
- First Name
- Scott
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- Friday
I made a quick check in the back yard to see if one of my regular spots had anything going on. It has been a little slow this year because the flowers did not come in as thick as usual. I am not sure what the little dark beetle is, but the other is a Yellow Cucumber Beetle.
I kept having to flip the leaf over from one side to the other because the spider kept trying to hide. It eventually gave up and let me take the pics. The one before leapt to my hand then dropped via a web to the ground and disappeared. When the two big eyes are green, it is not looking at you. When they go black, it is looking right at you. They eyes don't rotate in sockets like ours do. They are fixed. Instead, there are different receptor "plates" in the back of the eyes that can move. The plates are layered and each plate is sensitive to different colors. Somehow they use this system to judge depth perception. Given how far they can jump and how accurate they are, it must be a pretty good system!
I kept having to flip the leaf over from one side to the other because the spider kept trying to hide. It eventually gave up and let me take the pics. The one before leapt to my hand then dropped via a web to the ground and disappeared. When the two big eyes are green, it is not looking at you. When they go black, it is looking right at you. They eyes don't rotate in sockets like ours do. They are fixed. Instead, there are different receptor "plates" in the back of the eyes that can move. The plates are layered and each plate is sensitive to different colors. Somehow they use this system to judge depth perception. Given how far they can jump and how accurate they are, it must be a pretty good system!