I don’t know the specifics of the psyllids. I just googled them and compared photos. I bought some insecticide recommended online. I read that they can communicate Citrus Greening Disease, which worries me. I’ll post more photos tomorrow when the sun is back out. I live in Central Florida, we’ve been hammered with rain lately. I’m not sure if overwatering could be an issue. It hasn’t been in the past.