Michigan Flies
Giant Black Stonefly Nymph (Pteronarcys) reference photoReference photo, not our tie

Photo © Quinn for Fly Deal Flies, used with permission · (K) Stone Black - Beadhead

Shop / Two Hearted River box

Giant Black Stonefly Nymph (Pteronarcys)

A
Nymph

$2.75 each

Pteronarcys dorsata nymphs live two to four years, so the #2 to #6 nymph is available all year and is the Pine River staple, where Hawkins calls it a river of nymphs, sculpins and baitfish rather than a surface river. Bounce it through fast pockets on the Pine, Sturgeon and Upper Manistee; the adults emerge sporadically at night from mid May to June and are rarely fished.

6 × $2.75 = $16.50

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Setups

Indicator nymphing · Euro / tight-line nymphing · Chuck and duck

Imitates

When to fish it on the Two Hearted River
Part of the Two Hearted River box. Months the fly finder calls for this pattern here, for brook trout.
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
Pattern notes
Full hatch, egg, and forage links with sources.