pf2e.fyi
From Pathfinder Game Night: Dawn of the Frogs, which isn't enabled.

Giant Swamp Fly

CREATURE 1
Perception +8; darkvision
Skills Acrobatics +7, Athletics +6
Str +3, Dex +4, Con +3, Int -5, Wis +3, Cha -5

AC 17; Fort +6, Ref +9, Will +6
HP 20
Avoid the Swat
Trigger The giant fly is targeted with a melee or ranged attack by an attacker it can see

Effect The giant fly gains a +2 circumstance bonus to AC against the triggering attack. If the attack misses, the giant fly can move up to its fly Speed.

Speed 20 feet, climb 20 feet, fly 40 feet
Melee Mandibles +8, Damage 1d6+3 piercing plus Stinging Bite
Stinging Bite (disease)

The bite of a giant swamp fly spreads irritating toxin into the wound. A PC who is bitten by a giant swamp fly must attempt a DC 16 Fortitude save. On a failure, they become Sickened 1, or Sickened 2 on a critical failure.

Pathfinder Game Night: Dawn of the FrogsORC