Animalia → Insecta → Ephemerellidae
A Spiny Crawler Mayfly
Ephemerella velmae
Invertebrate Animals
ORBIC List 3S2
State Rank
SX
S1
S2
S3
S4
S5
S2 — Imperiled in Oregon
G2
Global Rank
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
Clackamas · Lane · Linn
Other states / provinces
CA
Range map
Certain
Possible
Extirpated
Absent