Studying the Leptophlebias you’ll instantly see two striking features. Firstly, they’re almost black. Like chocolate with a high concentration of cocoa. Secondly their clearly segmented by suttle creamy lines. And, if you lift one up and hold it up against the light you’ll see that the black really consist of a dark brown and claret hues.
I use the Leptophlebia Marginata Comparadun primarily when imitating the Marginata. Even though I always carry versions in the size of the Vespertina, the latter hatch is best fished with emergers (like this one) and a nymph. The Marginata is in my opinion best fished with a dun imitation and a nymph.
This pattern is based on the well known Comparadun pattern, but my variation is both ribbed with a thin tying thread and has a thorax with squirrel dub. In combination with the deer hair wing and the badger tails I believe the fly is buggy as hell.
The Leptophlebia Marginata Comparadun is a fish catcher beyond compare.