What kind of beetle is this? (Black and yellow)
This shield bug belongs to the species Perillus bioculatus, and has the nickname "two-spotted stink bug". They're native to the United States, and come in a variety of colors. 

You mention that its colors are yellow &amp; black, however, from the image you provide, it seems more of a pale yellow/off white. Because of that, I think it your found insect more closely resembles the first of the following images, whereas you may think it's closer to the second. 



And then, a few other colors: