From Pathfinder Bestiary, which isn't enabled.

Giant Mantis

CREATURE 3

These massive cousins of normal praying mantises stand taller than an average human. They stalk through dense forests, striking at meals from the trees.

These monstrously oversized insects are silent predators with lightning-quick forelegs and a bone-breaking bite.

Perception +9; darkvision

Skills Acrobatics +8, Athletics +12, Stealth +12

Str +5, Dex +3, Con +3, Int -5, Wis +2, Cha +0

AC 20; Fort +10, Ref +12, Will +7

HP 40

Speed 25 feet, climb 25 feet, fly 20 feet

Melee Leg +12 (agile, reach 10), Damage 1d10+5 piercing plus Grab

Melee Mandibles +12, Damage 1d12+5 piercing

Deadly Mandibles

Trigger The giant mantis Grabs a creature with its leg.

Effect The mantis pulls the creature adjacent to it, then makes a mandibles Strike against the creature.

Lunging Strike

The giant mantis lunges forward, making a leg Strike with an extended reach of 20 feet.

Sudden Strike

On the first round of combat, creatures that haven't acted are Off-Guard to the giant mantis.

Grab

Requirements The monster's last action was a successful Strike that lists Grab in its damage entry, or the monster has a creature Grabbed or Restrained

Effect If used after a Strike, the monster attempts to Grapple the creature using the body part it attacked with. This attempt neither applies nor counts toward the creature's multiple attack penalty.

The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.

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