The Bees by Laline Paull.
I just finished this book and am simply blown away. It is the closest book I have read to Watership Down - with shades of The Handmaid's Tale and Hunger Games. It is told through the eyes of Flora717 a lowly "sanitation bee", and how she serves within the different caste systems of the hive - including the inner sanctum of the Queen Bee. It is a dark read with social implications. As one Amazon reviewer says: "The story does for bees and religion, 'group think' and society roles what Animal Farm did for barnyard animals and government".