Mayfly Swimmer

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

Identifying Characteristics of Swimmers

Nymphs
1) Round and streamlined body.
2) Tails are fringed with fine hair.
3) Oval gills are positioned on the side of the abdomen.

Adults
1) Small body size.
2) Base of veins MP2 and CuA do not diverge from the base of MP1.
3) Two or three tails are present.

Mayfly Swimmer Nymph
Mayfly Swimmer Wing
mayswimn mayswimw
TABLE OF MAJOR MAYFLY SWIMMER HATCHES
Families Genera Species Common Name
Baetidae Baetis Blue-Winged Olive
Callibaetis Speckle-Wing Quill
Pseudocleon Tiny Blue-Wing Olive
Siphlonuridae Siphlonurus Black or Gray Drake
Ameletus Dark Brown Spinner
Isonychia White-Gloved Howdy