Loot Pool Changes

Couple a questions.

1/ Has anyone else noticed loot pool changes? I can’t get a Hive from Tarantella but Rosens Thorns drop like rain.

2/ Does anyone know of a reliable source of the Hive?

Just keep trying, Tarantella has 3 drops, the Hive, Roisen’s Thorns and the Re-Router.
The only enemy in the game that drops the Hive is Tarantella. You can’t get it anywhere else.