Animalia → Malacostraca → Crangonyctidae
A Cave Obligate Amphipod
Stygonyx courtneyi
Invertebrate Animals
ORBIC List 3S1
State Rank
SX
S1
S2
S3
S4
S5
S1 — Critically Imperiled in Oregon
G1
Global Rank
Critically Imperiled
List 3
ORBIC
Sensitive / Vulnerable
What do these ranks mean? ORBIC's ranking definitions or NatureServe's conservation status categories
Ecoregions
West Cascades
Counties
Multnomah
Other states / provinces
Not found outside Oregon
Oregon Endemic: Found only in Oregon
Range map
Certain
Possible
Extirpated
Absent