Home >Game Mastering >Bestiary >Creatures by Type >Vermin >


Utesra CR 5

XP 1,600
N Medium vermin
Init +5; Senses blindsense (vibration) 30 ft.; darkvision 60 ft.; Perception +11


HP 70
EAC 17; KAC 19
Fort +7; Ref +9; Will +4
Resistances electricity 5 (10 vs. nonlethal electricity)


Speed 30 ft., climb 30 ft.
Melee bite +14 (1d6+8 P) or shock tendril +14 (1d6+5 E nonlethal plus grab; critical staggered)
Space 5 ft.; Reach 5 ft. (30 ft. with shock tendril)
Offensive Abilities strobe


Str +3; Dex +5; Con +2; Int —; Wis +1; Cha –3
Skills Stealth +11


Shock Tendril (Ex)

An utesra can lash with its electrically charged dorsal stalk. This attack lets the utesra ensnare the target per the grab ability, though the attack result is compared to the target’s EAC to determine whether the creature is grappled or pinned.

Anytime the utesra renews the grapple, it also deals the tendril’s damage and repositions the target 5 feet closer to the utesra, plus 5 more feet for every 5 by which the attack exceeds the target’s EAC + 4. If the target ends the forced movement within the utesra’s normal reach, it can bite the target as a move action. A creature can sever a shock tendril by dealing 20 points of slashing damage to it (the tendril has the same AC as the utesra). An utesra can regenerate a severed tendril over the course of a week.

Strobe (Ex)

As a standard action, an utesra can flicker one or more of its dorsal stalks until the beginning of its next turn, creating subtle, calming electromagnetic vibrations. The utesra can maintain this strobing each round as a move action. Any creature other than an utesra within 60 feet of the utesra and able to see the display becomes fascinated (Will DC 13 negates) for as long as the utesra continues to strobe, though threatening actions can potentially break the effect as normal. A creature that succeeds at this saving throw is immune to the strobe of utesras (but not utesra phylarchs) for 24 hours. The utesra can’t concurrently use a stalk to create a shock tendril and to strobe.


Environment any hill, mountain, or urban
Organization solitary, pair, or scintillation (3–8)

A series of electrocyte-dense organs run along an utresa’s thorax, head, and hunting tendrils, allowing the creature to sense its surroundings with sonarlike pulses, create soft flashes of light and direct painful shocks. The haunting lights have spawned cautionary tales that mirror those of the will-o’-wisp, warning travelers against wandering toward the promise of lights spotted in the rain and fog.

Utesras are obligate parasitoids, able to reproduce only by incubating their eggs in others’ flesh. The common utesra is merely a voracious larval form of the organism, and only after feeding consistently and molting repeatedly does the larva develop into an adult, referred to as an utesra phylarch. Phylarches incapacitate larger prey to lay their eggs in, typically abandoning the host in a relatively dry location until the eggs can hatch. In rare cases a phylarch even shadows its hosts for days, chasing off other predators like an ill-intentioned guardian.

Although stealthy, utesras favor ambushes over patiently stalking victims. However, ongoing settlement of their longstanding habitat has led to an increase in aggressive and opportunistic behavior.

Section 15: Copyright Notice

Starfinder Alien Archive 4 © 2020, Paizo Inc.; Authors: Kate Baker, Tineke Bolleman, James Case, Jessica Catalan, JN Childs, Ed Chuck, John Compton, John Curtin, Adam Daigle, Katina Davis, Crystal Frasier, Leo Glass, Basheer Ghouse, Amanda Hamon, Sasha Laranoa Harving, Thurston Hillman, Joan Hong, Jenny Jarzabski, Jason Keeley, Mike Kimmel, Avi Kool, Chris Lambertz, Luis Loza, Ron Lundeen, Carmen Marin, Hilary Moon Murphy, Adrian Ng, Emily Parks, Joe Pasini, Lu Pellazar, Samantha Phelan, Jessica Redekop, James Rodehaver, Simone Sallé, Chris S. Sims, Kendra Leigh Speedling, Owen K.C. Stephens, and Viditya Voleti.