EPHEMERID MAYFLIES: AR­RANGED BY LIFE CY­CLE STAGE. LIFE CY­CLE PRO­GRESSES FROM BOT­TOM TO TOP.

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Imago (spin­ner).

Buoy­ancy de­creases left to right: Spent adult, crip­pled spent adult, sub-sur­face sus­pender spin­ner, bead head sunk spin­ner.

Sub-imago (dun).

Size in­creas­ing left to right: Para­chute duns, Klinkhamer-style dryflies. Ar­ranged by pos­ture on sur­face.

Emerg­ing duns.

Left to right in­creas­ing in size. Sparkle Duns.

Grouped by ephemerid species.

Left to right in­creas­ing in size. Gen­eral Baetis: nymphs and emerg­ers. Iron Blue dun: Sub-sur­face sus­pender emerger, sur­face emerger, dun.

Ar­ranged by emer­gence stage.

Size and weight in­creases left to right. Wire wet-flies, float­ing nymphs, shuck pat­terns.

Ephemerid nymphs.

Left to right in­creas­ing in size and weight. Stan­dard PTN nymphs, bead­head nymphs. Ar­ranged by con­struc­tion.

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