Observation notes: oUp Hyalite Canyon outside of Bozeman, Montana. We were picking Huckleberries (plant/berry seen in picture) and I spotted it on a leaf. The berries were growing on a North facing hillside under a stand of lodgepole pine trees. I saw another one later in the day, although the white spots on its back (which I now believe to be groups of hair?) were separated so it looked like it had 6 "pods" (I called them pods prior to learning they may be stinging hairs) on its back instead of just 3 as the one in this photo.