If it is spiders, they are drawn there looking for aphids to feed on. Aphids would suck the juices from a bud leading to a deformity.
If it is false spider mites, they spin webs and suck the juices themselves.
You could sprinkle a 'rose dust' insecticide on the buds. You could spray with Bayers 3in 1. 3 applications, a week to 10 days apart.
You could spray with diluted Neem Oil. Again, 3 applications. Once under control a once a month spray as a precaution would keep the vast majority of insects away.
