I have caught it doing this about 3 times now.
I don't know what this behavior is or why it is doing this.
The spider was completely unmolested and alone when I walked in and found it in this position, so I don't think it is a threat posture or anything (unless maybe it saw it's own reflection in the glass).
Maybe it does this to keep cool?
Temperature is the only thing I can think of when I found it in this position (the tank was warmer than normal).
I don't have a very accurate thermometer yet but the heat strip (thermometer) on the side of the tank read somewhere between 86 and 90 degrees.
Sorry the image quality is so poor
I am using a cheap webcam to take the pics.
The following is a link to a page with pictures of the web enclosure the spider built in the artificial burrow I made for it.
"Webbed Up"
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