uncommon n huge animal 

Perception +16; darkvision, tremorsense (imprecise) 90 feet

Skills Acrobatics +13, Athletics +20, Stealth +11, Survival +16

Str +6 Dex +1 Con +4 Int -4 Wis +2 Cha -2

AC  29; Fort +18, Ref +15, Will +14

HP 120

Attack of Opportunity [R]

Speed 25 feet, burrow 20 feet

Melee [>] mandibles +20 (acid), Damage 2d8+6 piercing plus 2d6 acid

Ranged [>] acid spit +17 (acid, range 30 feet), Damage 5d6 acid

Armor-Rending Bite [>>] The hive mother makes a mandibles Strike; if the Strike hits, the target's armor takes the damage and the acid damage bypasses the armor's Hardness.

Frenzy Pheromone [>>] The hive mother unleashes a pheromone that causes all other ankhravs within a 100-foot emanation to become quickened 1 until the start of the hive mother's next turn, and they can use the extra action only for Burrow, Stride, or Strike actions. The hive mother can't unleash the pheromone again for 1d4 rounds.

Spray Acid [>>] (acid) The hive mother spews acid in a 60-foot cone, dealing 8d6 acid damage and 1d6 persistent acid damage (DC 26 basic Reflex save). It can't spew acid again for 1d4 rounds.

Bestiary, page 22.