I was in the lab this morning, and found the Steatoda borealis in an odd position: face-to-face, chelicerae almost touching, and they were pulsing. I put this pair under the microscope, and actually saw that the male had one massive palp extended all the way to the female’s epigyne, and he was literally throbbing as he pumped her full of his semen.
Jeezus, this sounds like a porn novel.
I tried to get a photo of them in the act, but wasn’t quick enough. This [sorry, no spider photo here. You can see it on my patreon or instagram] is the moment after; the male had pulled back slightly, and was busy licking his palps clean. First he puts it in the female, and then he pulls out and puts it in his own mouth — at least you won’t find that in most porn stories, I don’t think.
I’m expecting eggs in a few days now.










