Animalia → Insecta → Ameletidae

A Mayfly

Ameletus quadratus

Invertebrate Animals

ORBIC List 1S1

State Rank

SX
S1
S2
S3
S4
S5

S1 — Critically Imperiled in Oregon

What do these ranks mean? ORBIC's ranking definitions or NatureServe's conservation status categories

Ecoregions

West Cascades

Counties

Lane

Other states / provinces

Not found outside Oregon

Oregon Endemic: Found only in Oregon

Range map

Certain
Possible
Extirpated
Absent