Found in San Rafael, California two week ago. Bite very painful. Very small like 1/8-1/4 inch photos xoomed (enlarged)
Jonathan K.
This is a Merchant Grain Beetle,
Oryzaephilus mercator, a common household pest. According to BugGuide (link https://bugguide.net/node/view/183015): “Adults and larvae feed primarily on cereal products, particularly oatmeal, bran, shelled sunflower seeds, rolled oats, and brown rice”. While they are not known for biting humans, they do possess mandibles, so a bite is possible.
