n large animal 

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 feet), Damage 1d10+5 piercing plus Grab

Deadly Mandibles [R] 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 flat-footed to the giant mantis.

Bestiary, page 233.