Archives of Nethys

Pathfinder RPG (1st Edition) Starfinder RPG Pathfinder RPG (2nd Edition)

All | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | Starship-Scale | T | U | V | W | X | Y | Z

Template Grafts | Universal Monster Rules

Miasma Fly

Source Starfinder #41: Serpents in the Cradle pg. 56
Miasma flies are long-bodied insects that are about the size of a small canid. True to their name, miasma flies are often found flitting lazily in clouds of the gaseous metals on which they feed, or skimming the surface of Weydana-2’s mercury lake. Many explorers are drawn to miasma flies’ beautiful coloring and find their graceful movements fascinating to watch, at least from afar: wicked stingers protrude from both ends of the insects’ bodies, and their shimmering wings are lined with spines. Miasma fly stings are extremely painful, producing a sensation comparable to a gunshot wound. Worse, their venom causes severe muscle stiffness and paralysis as it works through the victim’s body.

A dedicated team of xenobiologists have posited a connection between the miasma fly and another creature native to Weydana-2, the cryllapede. Miasma flies congregate when temperatures in their environment dip significantly, arriving in great swarms. After devouring enough nutrients to power metamorphosis—a process that takes only a few days of constant gorging—miasma flies shed their wings, find shelter within crystal formations, and form a chrysalis nearly indistinguishable from the surrounding rock. In a few weeks, the creatures emerge in a new form: a large predatory insect known as a cryllapede, with a chitinous segmented body that mimics the appearance of Weydana-2’s crystalline landscape. Cryllapedes use their sensitive, antennae-like legs to detect the movements of their preferred prey, the ruminant species of Weydana-2. Once they’ve located a herd, they burrow into the ground, pinpoint the exact location of a target, and erupt from the earth in an ambush attack. Cryllapedes lay their eggs in half-devoured corpses. Though they aren’t normally aggressive to humanoids, cryllapedes will attack if threatened or desperate for food.

Aliens in the "Miasma Fly" Family

Miasma Fly2

Miasma Fly

Source Starfinder #41: Serpents in the Cradle pg. 56

Miasma Fly CR 2

XP 600
N Small virmin
Init +4; Senses darkvision 60 ft.; Perception +8


HP 35
EAC 14; KAC 16
Fort +7; Ref +5; Will +2


Speed 30 ft., fly 50 ft. (Ex, good)
Melee sting +11 (1d6 P plus gasdrinker venom; critical stunned)


STR -2; DEX +4; CON +2; INT —; WIS +0; CHA -3
Skills Acrobatics +13 (+17 to fly)
Other Abilities mindless


Environment any
Organization solitary, pair, or swarm (3–5)

Gasdrinker Venom

Type poison (injury); Save Fortitude DC 12
Track Dexterity; Frequency 1/round for 6 rounds
Effect progression track is Healthy—Sluggish—Stiffened—Staggered—Immobile
Cure 2 consecutive saves