Product information
- Ephemerella invaria, throughout the Midwest and many other regions as well, this is THE hatch to fish.
- The duns take flight fairly quickly, but be prepared with these.
- Sulphur hatches usually last two-three weeks in beginning in May.
- Often called Pale Evening Dun.
Merchandise is returnable within 14 days - email orders@fieldandstream.com with questions.
Premium and Print Memberships are cancellable within 24 hours of purchase - email membership@fieldandstream.com with questions.
Free U.S. Shipping over $99* USD
*Exclusions apply
Orders are shipped Monday-Friday, excluding federal holidays within the United States, or if the fish are really biting!


