A species found on western trout streams
from Colorado to California. 1/2". Often
called "PMD's". A member of the "spiny
crawler" family of mayfly nymphs. Distinguished
by lack of gills on abdomen. Awkward swimmers.
"Pale Morning Dun"
Ephemerella
infrequens
spiny crawler mayfly nymph
A species found
on western trout streams
from Colorado to California. 1/2". Often
called "PMD's". A member of the "spiny
crawler" family of mayfly nymphs. Distinguished
by lack of gills on abdomen. Awkward swimmers.
Other spiny crawler
mayflies:
"Hendrickson"