Mark Eastburn

Before I found Frigga crocuta, this other species of (possibly) vegetarian spider, I had originally set out to study all of the known species of Bagheera, which were two when I started (Bagheera ki...

I just received word yesterday on the results of a stable isotope analysis performed at The Academy of Natural Sciences of Drexel University in Philadelphia, and a preliminary revie...

Ignoring the multiple ant stings on my finger, I want to direct your attention to the vials sitting on the laboratory bench behind. These were primarily samples that I collected in ...

In case the video doesn't come up, you can always click on the link below:https://vine.co/v/MlBD13PUZJFOf all the places that I might expect to see a blue morpho butterfly, the men's bathroom at La...

Original video here!It was getting dark in Palo Verde, and I knew I didn't have much time to find more Bagheera spiders before the light became too dim to see. My main focus was on the Vachellia pl...

Preparing the first spider samples for stable isotope analysis.

A nest, or "sling," of Frigga crocuta on a Vachellia plant. These look nearly identical to the slings of Bagheera kiplingi in Mexico.

While searching for Bagheera kiplingi in Palo Verde, Costa Rica, I discovered plenty of fascinating neighbors, including these two tamanduas!

Here was the first specimen of Frigga crocuta that I collected from a Vachellia collinsii in Panama. Though it nests on Vachellia plants and behaves very much like Bagheera kiplingi...