Bristle Cone pine scale
Thank you for using the Ask an Expert service!
Although the resin on bristlecone pine trees can resemble scales, there are a few distinctions:
Scales are usually uniform in shape/size, and appear to be flatter and flush with the surface of the needles. Scales also have a brown spot at the narrow tip (the head) which is also easy to differentiate. If you peel back scales you can sometimes see legs on the underside of the scale, and discoloration on the needles as a result of them. There are also often some sticky residue (honeydew) on the surface of the plant as a result of these scales.
You can learn more about scales on conifers here:
The resin that naturally occurs on the bristlecone pines are irregular in shape/size and don't have any of the aforementioned distinguishing characters.
Your tree appears to be healthy, and showing spots of natural dried resin!