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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, Cryllapede

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

Cryllapede CR 5

XP 1,600
N Large vermin
Init +3; Senses darkvision 60 ft.; Perception +11


HP 70
EAC 17; KAC 19
Fort +9; Ref +5; Will +4


Speed 30 ft., burrow 50 ft.
Melee bite +14 (1d6+10 P; critical wound)


STR +5; DEX +3; CON +2; INT —; WIS +0; CHA -3
Skills Athletics +16, Acrobatics +11
Other Abilities mindless


Environment any
Organization solitary or pair