Mayfly Crawler

Have you reviewed the intro to mayflies page? We recommend this page before continuing on.

Identifying Characteristics of Crawlers

Nymphs
1) Plate like gills on top of abdomen
2) Forked gills with no fringes

Adults
1) Series of short intercalary veins present along the outer margins of the
fore wing and not attached to other veins

Mayfly Crawler Nymph

Mayfly Crawler Nymph

Mayfly Crawler Wing
maycran maycran2 maycraw
TABLE OF MAJOR MAYFLY CRAWLER HATCHES
Families Genera Species Common Name
Ephemerellidae Attenella attenuata Tiny Dun Variant
Drunella cornuta Large Blue Wing Olive
grandis Western Green Drake
flavilinea Small Western Green Drake
coloradenis Slate-Winged Olive
subvaria Dark Hendrickson
rotunda Light Hendrickson
dorothea Sulfurs
inermis E. infrequens Pale Morning Dun
Serratella deficiens Little Dark Hendrickson
tibialis Small Western Drake
Tricorythodidae Tricorythodes Tricos
Caenidae Caenis hilaris Tiny White Winged Curse
Leptophlebiidae Leptophlebia cupida Red Quill
Paraleptophlebia adoptiva Blue Quill