http://mc.nessirojgaming.eu/bees/index.php?title=Edenic_Bee
On the bottom left you see "Mutates from". When you click on the Tropical Bee you see, that it is a hive bee, so you need to find its hive (in the jungle). If you click on the Exotic Bee you see, that it mutates from Austere Bee + Tropical Bee.. Now click your way back to bees you already have.
http://plornt.com/bees/ (and clicking on the (wrongly named) Endenic Bee) will give you a quick graphical overview of the breeding tree.[DOUBLEPOST=1370988623][/DOUBLEPOST]
If you view your apiary you will see what the problem is. The tabs on the right will list the problem.
Since it took a day until the particles stopped... Did your queen simply die so that you need to put the princess and a drone back in the left slots?