Have you reviewed the intro to mayflies page? We recommend this page before continuing on.
Identifying Characteristics of Swimmers
1) Round and streamlined body.
2) Tails are fringed with fine hair.
3) Oval gills are positioned on the side of the abdomen.
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
|TABLE OF MAJOR MAYFLY SWIMMER HATCHES|
|Pseudocleon||Tiny Blue-Wing Olive|
|Siphlonuridae||Siphlonurus||Black or Gray Drake|
|Ameletus||Dark Brown Spinner|