Thanks, Jeff.
Looking around, I found some videos of one Geolycosa burrowing (bolus ejection): http://faculty.vassar.edu/suter/1websites/Geolycosa/.
Cool.
Here are some pics from my yearly visits to the eastern shore of Georgian Bay (Ontario, Canada).
A nicely camouflaged Arctosa sp.
Another one...
Where the...?
Ah, there you are:
Here's a massive (~2cm LS) specimen I found two years ago:
Going purely on instinct, I'd have to go with the "bad crickets" theory. It's most likely that the crickets were fed something contaminated with pesticide before you offered them to your spiders. This has happened to me before. One way to rule this theory out: did you feed other spiders with...
Defense strategy number two: apparently, these arboreal spiders are not affraid of taking a dip under water to escape "predators"... In the second pic, you can clearly see the air trapped by the setae of leg III. The spider is almost fully submerged.
I finally "persuaded" it to...
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