Here’s a spider being attacked by beech blight aphids (Grylloprociphilus imbricator). The spider eventually dropped off the tree trunk onto the forest floor and crawled away, twitching slightly. This is a known defensive behavior of the aphids, but I’d never seen it before. Apparently the stylets are sharp enough to puncture human skin, too. Wish I’d managed to get better photographs, of course.
Clayton Park, Monmouth County, New Jersey, United States.
I think this is Phidippus princeps, but it’s a highly variable species and I didn’t feel like hacking it apart to examine genitalia. Plus I don’t know how to key out spider genitalia at all, so it would have been a senseless thing to do. But it was definitely capable of jumping: leaped onto my lens twice, which is always a bit unnerving. They are harmless, but when you are habituated to seeing them through a macro lens, the subconscious brain tags them as massive predators. I survived. This was one of three spiders I photographed within a small area in Swarthmore, PA, a few days ago.
I’m pretty sure this is a daring (or bold) jumping spider, Phidippus audax. He was very, very large, though you can’t tell it from the photograph. Found at same location as the spider I posted earlier. It was a good spider day (and there’s even one more). Swarthmore, PA.