Tuesday, July 19, 2011

Meanwhile, back in France..

My mom sent me a couple of pictures of a spider she found in our house, in Brittany, France. This spider, which belongs to the family Pholcidae (cellar spiders), genus Pholcus, brings back memories from home, as I remember seeing these when I was younger. I remember throwing small paper balls in their webs to see if the spider would mistaken them for prey items. Instead, the spider would shake and vibrate in its web. I later found out that this shaking is a defense mechanism which makes the spider look blurry and therefore more difficult to catch.

This spider was surrounded by her offspring, which first looked like small dots in her web:


The second picture shows the same spider and her young, now a little older:



Pholcids are long-legged spiders that hang upside down in tangle webs, which they typically build in dark areas (cellars, caves), but sometimes also in warm areas inside houses.

2 comments:

  1. Do the babies hang out with the momma for a while? Strange!

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  2. Yes-the mom carries her egg cocoon with her for a few days. When the babies hatch, they stay close to the cocoon for a couple of days, then disperse in the web and stay there until they are ready to leave the web :)

    There is info on the subject here:

    http://www.jstor.org/stable/pdfplus/2424853.pdf?acceptTC=true

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