|Black Widow hanging upside down from web with egg case - REK|
|Wrapping up dinner - Lisa Berger|
The prey was bitten several times and it took a while to die. In this video you can see the final "kiss" and the spider starting to use its back leg to drag it away. It ended up in the web funnel where the widow could digest its juicy meal in relative safety.
Black widows hang upside down in their low lying web, exposing their bright red hourglass. This is thought to be an aposematic coloration, advertising their toxicity to hungry birds. Since insects see a different light spectrum than birds, it probably doesn't put off the spider's prey according to a recent study.
More on Black Widow's mating dance is in this previous blog.