This is a giant-sized bumblebee, much larger than its normal sized counterpart.
Giant Bumblebee, Queen CR 5
Speed 20 ft., fly 60 ft. (good)
Melee sting +9 (2d6+7 plus poison)
Space 10 ft.; Reach 5 ft.
Str 20, Dex 14, Con 14, Int —, Wis 13, Cha 11
Base Atk +5; CMB +11; CMD 23 (+32 vs. trip)
Skills Fly +4, Perception +5, Survival +1 (+5 to keep from getting lost); Racial Modifiers +4 Perception, +4 Survival to keep from getting lost
Environment temperate forests and plains
Organization solitary, buzz (2–5), or hive (11–20)
Giant Bumblebee Queen from the Tome of Horrors Complete, Copyright 2011, Necromancer Games, Inc., published and distributed by Frog God Games; Author Scott Greene.