Sorry. That's a classic sign of rose midge. It's not everywhere, but it's a scourge where one finds its as it will spread to every one of your roses and you won't have any blooms until you eradicate them. Unfortunately, there are as yet no known predators so the choices are chemical and/or organic cultural methods. For chemical there are three basic ones, but one is an organophosphate and while it will work it's intense and I've found no studies to follow for its application. The other two are imidacloprid which is best applied as a granular to the soil after winter around pruning time to kill the special overwintering pupae as they emerge and then any that do live as they feed on the rose, since it's a systemic. Get one that doesn't last longer than six weeks in the plant and you may be able to avoid affecting the insects that feed on the pollen. You may also want to do this with newly planted roses. Cyfluthrin is another chemical used as a spray. It's best to use it only on emerging shoots and buds as this is where the midge lay their eggs. It will need to be repeated ever 10 days or so. When you use products that have a longer life in the plant they will kill anything feeding on the pollen such as bees, moths and butterflies, since they remain active as the buds bloom. Try and choose those with a shorter life as opposed to those you apply once a year.
Organic cultural methods include removing the soil and mulch about 2 inches down and replacing. Also cover the ground with landscape fabric and do the same with any potted plants putting them on a hard surface. The midge can only pupate in soil, so the fabric prevents them from reaching the ground and also emerging. Since it's impossible to reach all areas, you may still have to spray for a while. . If you don't have underplantings do try the fabric as it's worked really well for me.
Whatever you do, do it now or you won't have any flowers and it will spread to all your other roses. Their life-cycle gets shorter and shorter with warmer weather. Take advantage of this window.
I just realized I should have asked where you live. (You can add that info to you name). If it's in the south this could also be Chili Thrips. They look similar, but I'm not familiar with the nuances or the treatment. Hope this helps
Q