Hi, JoJoe,
I never have had a problem with root mealies, but hear that they can be a problem in some areas.
I have a collection of about 30 Rhipsalis, many of them still small. In the spring, I can send you some small cuttings of some of them if you would like to try some other varieties. Many are very hard to ID. The one you show in the first pic of the last post looks to be R. sulcata although frequently sold as R. ewaldiana. They are two distinct varieties (species) that can be hard to tell apart. Sulcata does white fruit, while ewaldiana does dark pink fruit. I'll try to dig up and post some pics of the ones I have.
Have to run right now, short on time at the moment.
BTW, they do not tolerate freezing and don't like cold temps. Bring them inside before they spend much time below 40 degrees.