Light Grannoms
This common name refers to only one species.
These are often called Light Grannoms.
This is a "wind-shield wiper" hatch -- it slows traffic on the freeway which winds through the valleys of several famous trout streams in the Catskills, which have thick hatches of the Apple Caddis in the Spring.
The common name comes from the bright apple-green color of its abdomen.