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Mortal Combat - Wasp vs. Spider - female

Mortal Combat - Wasp vs. Spider - Female
Tracys Landing, Anne Arundel County, Maryland, USA
September 19, 2017
Any idea what the wasp is... or the spider?

I saw something drop form the cliff onto the clay. It was this wasp and spider. They wrestled for a bit and the spider did not give up easily. With the spider upside down and helpless the wasp flew away and I rolled the spider over to take a picture of the top of it (I will post a picture). 5-10 minutes later I went to check if the spider was still there and it was not.

Based on other things in the photos, I would say the spider was a little < 2 cm and the wasp slightly smaller.

While the clay and wasp colors seem to match my memory, the spider was more of a tannish-pink rather than the strange purple that all the pictures I took displayed, perhaps it was because of the shaded area or my cell phone not cooperating due to the humidity. Not sure. I was kind of balanced on some driftwood semi in the surf, so it is a wonder that I got any pictures at all aside from the mating horseshoe crabs I had been filming.

Also, while I have seen other wasps bury their spiders in the sand, I doubt that this wasp would have done so because the entire beach was not only covered by some extra high tides but the surf was quite rough along the shore. The beach is very small and there is really no gradual progression from beach to the cliffs, the forest or the creek. There are no human structures close by other than an elaborate driftwood ramp we use to reach the beach.

Images of this individual: tag all
Mortal Combat - Wasp vs. Spider - female Mortal Combat - Wasp vs. Spider

Auplopus mellipes
busy severing legs to facilitate prey transport. They are mud-daubers and build cylindrical mud cells where they will place the spider and lay an egg on it.

Thanks. I am glad I am not a spider. Hopefully the spider is dead rather than just paralyzed.

Moved from ID Request.
Pisaurina mira for the spider.

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