Look up BQCV. Black queen cell virus. I had a number of duds in a batch of grafts that fit some of the symptoms.
I'm pretty sure the two queen larvae that I pulled out in September were not black, but I'm not 100% sure, and I didn't take photos. If this queen cell is still capped when I check next week I'll be sure to take a photo. Thanks!Look up BQCV. Black queen cell virus. I had a number of duds in a batch of grafts that fit some of the symptoms.