’Skeletorus’ and ‘Sparklemuffin’ the Newest Spiders
Two gorgeous new species of peacock spiders nicknamed “Skeletorus” and “Sparklemuffin” have been discovered in Australia, according to a new report.
Peacock spiders are so-named because of their bright colors and their dancelike, courtship rituals.
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Reading about those spiders made me surf about looking at how spiders see,
From http://australianmuseum.net.au/how-spiders-see-the-world
“Daylight hunters with multi-purpose vision
Jumping spiders (Salticidae) are most active during the day. They have excellent vision which they use to hunt prey and recognise mates and enemies. Jumping spiders can leap more than 20 times their own body length, propelled by their back legs. However, when pouncing on their prey, they make shorter, more accurate leaps.
When hunting, the eyes of jumping spiders see in three different ways, using three different sets of eyes:
The spider first senses movement of distant prey with the side eyes (PLE), which provide a blurry wide-angle image. Once movement is detected, the spider turns in that direction and locks onto the moving prey with the large, middle front eyes (AME). These eyes provide a clear, focussed telephoto image, probably in colour. The spider can track moving prey both by body movements and by using muscles to internally swivel the elongated eye capsules so that the light sensitive retina of each eye remains locked on the prey. While the spider stalks closer, it uses the side front eyes (ALE) judge the distance to the prey. When it judges the prey to be close enough (about 2 cm – 3 cm), the spider leaps.”Cant for the life of me image what that would be like.
Life varies so much
Brett
Thomo said:
Reading about those spiders made me surf about looking at how spiders see,From http://australianmuseum.net.au/how-spiders-see-the-world
“Daylight hunters with multi-purpose vision
Jumping spiders (Salticidae) are most active during the day. They have excellent vision which they use to hunt prey and recognise mates and enemies. Jumping spiders can leap more than 20 times their own body length, propelled by their back legs. However, when pouncing on their prey, they make shorter, more accurate leaps.
When hunting, the eyes of jumping spiders see in three different ways, using three different sets of eyes:
The spider first senses movement of distant prey with the side eyes (PLE), which provide a blurry wide-angle image. Once movement is detected, the spider turns in that direction and locks onto the moving prey with the large, middle front eyes (AME). These eyes provide a clear, focussed telephoto image, probably in colour. The spider can track moving prey both by body movements and by using muscles to internally swivel the elongated eye capsules so that the light sensitive retina of each eye remains locked on the prey. While the spider stalks closer, it uses the side front eyes (ALE) judge the distance to the prey. When it judges the prey to be close enough (about 2 cm – 3 cm), the spider leaps.”Cant for the life of me image what that would be like.
Life varies so much
Brett
Probably in colour. ? Why would the spiders develop such beautiful colours for courtship displays fthey couldn’t see colour?
Probably in colour. ? Why would the spiders develop such beautiful colours for courtship displays fthey couldn’t see colour?
because science doesn’t work that way. until they can say one way or another it remains uncertain.
JudgeMental said:
Probably in colour. ? Why would the spiders develop such beautiful colours for courtship displays fthey couldn’t see colour?because science doesn’t work that way. until they can say one way or another it remains uncertain.
OK.
roughbarked said:
JudgeMental said:
Probably in colour. ? Why would the spiders develop such beautiful colours for courtship displays fthey couldn’t see colour?because science doesn’t work that way. until they can say one way or another it remains uncertain.
OK.
Still even so they must at least be able to discern awsome greyscale.
When I was an Indian resident we had a book on spiders and insects. My favorite spider genus from this book became thorn spiders. When my family returned to Darwin I happened to find one in our garden there. It was similar in thorax shape to this example but had a black thorax with spots of bright yellow/red and a turquoise blue color. I haven’t been able to find a picture of a similarly colored thorn spider though I think there was a similar one in the book we had.
Postpocelipse said:
When I was an Indian resident we had a book on spiders and insects. My favorite spider genus from this book became thorn spiders. When my family returned to Darwin I happened to find one in our garden there. It was similar in thorax shape to this example but had a black thorax with spots of bright yellow/red and a turquoise blue color. I haven’t been able to find a picture of a similarly colored thorn spider though I think there was a similar one in the book we had.
I can heartily recommend this book, though I have an overdue fine to pay on it.
