Pale Morning Dun
Life Cycle = egg, larva, sub-imago, adult
|Size/Profile||Larva (nymph): 10 - 20 mm (flat
tapered body with distinct wing case and long split tail))
Adult/Sub-Imago: 10 - 20mm (tapered body with two large gray wings standing upright with a slight tilt back and a long split tail)
Note: tails are typically as long as the body.
|Colors||Larva (nymph): top is a light
reddish/pink, bottom is cream, wing case is typically brown.
Adult/Sub-Imago: top is light yellow/olive, bottom is creamy yellow. Wing is gray.
|Action||Larva: crawl on the bottom but swim
frantically when rising to the surface to emerge.
Adult: Most of the time very still on the surface of the water as the wings dry. Females skim water and dip occasionally to deposit eggs.
|Habitat||PMDs are often found in faster moving water where more oxygen is present. They breathe through gills on their abdomen and eat aquatic plants. They prefer warmer water than the midges. As such, they are found in greater numbers downstream of the Texas Hole and are more prolific as you reach the lower stretches of the quality water.|
|Notes||PMD nymph patterns are productive fished near the bottom early right before the typical hatch times (around 11am or so) and in between hatches throughout the afternoon. Fish tend to key in on the PMDs just as they reach the surface and begin to emerge and are helpless and still. When hatches are significant, the fish may key in on the adult stage. Hatches are best in July and and are especially good during overcast conditions. Fish will also take spent adults on the surface during a good hatch.|
Select the Fly Patterns link for recipes and pictures of the patterns.