Showing posts with label spider webs. Show all posts
Showing posts with label spider webs. Show all posts

Thursday, February 17, 2011

Marbled Orbweaver Spider

Marbled Orbweaver spider  02.jpg
Araneus marmoreus

About twenty years ago, I suffered several spider bites that required me being in the hospital for a week. The experience gave me an irrational fear of spiders because we never learned what type of spider bit me. But my camera has helped me overcome this phobia. I won't tolerate spiders in the bedroom and have been known to scream if one lands in bed. But I don't react that strongly at other times. I have found spiders to be beautiful and fascinating creatures.

This is a marbled orbweaver. It is a female because the males are very small. The "marbled" part of her name refers to the pattern on her back. Orb weavers weave webs every night after eating the web that they made the night before. Barn spiders, like Charlotte in Charlotte's Web, are orb weavers.They have three claws on each "foot."

When a bug lands on the web, the spider runs down to it, bites it to numb it and then wraps it up in silk. Orb weavers lay eggs in the fall and leave them over the winter in an egg case. The spiderlings hatch in the spring.

I'm on the lookout now for these egg cases in the garage. I plan to make a photographic study of a barn spider over the summer and I need to find my spider!

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Sunday, October 31, 2010

The Dewy Web of a Grass Spider

Web of grass (or funnel-web) spider (5)

I am sure that you have gone out into a meadow early in the morning and seen beautiful, sparkling spider webs spread like a carpet over the grasses. On the morning in July when I took this photo, I found an especially large and beautiful web in the back field. I think it is impossible to capture the beauty with a camera.

These webs are the horizontal web of grass spiders (family Agelenidae). These spiders are also called funnel-web and funnel-weaver spiders. The funnel is on the side of the web (we think it is the vague circular shape on the lower right corner of the web here) and the spider drags its prey into the funnel to eat it. These are not the funnelweb spiders of Australia that are very dangerous. Those are "primitive" (mygalomorph) spiders while our North American grass spiders are "true" (araneomorph) spiders. There are 9 genera of grass spiders in North America and 85 species. You know that next summer I will be paying close attention to these webs and trying to find the spider inside!

We found an interesting bug identification site to share: cirrusimage.com's spider page has awesome photographs. Be sure to go to their home page, also, at http://cirrusimage.com/ to explore the rest of the site.




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