Android - Espresso testing - How to take a screenshot, which is shown on Testdroid?

I'm using the Espresso-framework for my Android testing and additionally I'm using the Testdroid-Cloud for automatic testing on real devices.

Does anybody know, how to tell Espresso to make a screenshot, which is shown on the Testdroid Dashboard?

If I disable Espresso, the Testdroid crawler automatically make screenshots. By suing the Espresso-framework it doesn't! See screenshot: