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Hydropsyche aenigma (Spotted Sedge) Caddisfly Adult Pictures

 These big caddisflies were tempting trout as they wriggled out of their shucks (
Here's an underwater view of the pupal shucks of several already-emerged Brachycentrus numerosus caddisflies.
Here's an underwater view of the pupal shucks of several already-emerged Brachycentrus numerosus caddisflies.
Shuck: The shed exoskeleton left over when an insect molts into its next stage or instar. Most often it describes the last nymphal or pupal skin exited during emergence into a winged adult.
)
, while others skated across the water at a medium pace, probably egg-laying.


This caddisfly was collected from the West Branch of the Delaware River on May 15th, 2007 and added to Troutnut.com on May 18th, 2007.

This is the same caddisfly, moments after it emerged (the shuck is still attached a bit).  You can see the body color was much lighter then.    Hydropsyche aenigma (Spotted Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York
This is the same caddisfly, moments after it emerged (the shuck is still attached a bit). You can see the body color was much lighter then.
AuthorTroutnut
CameraPENTAX Optio WPi
This body almost cries out to be imitated with peacock herl, doesn't it?  Hydropsyche aenigma (Spotted Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York
This body almost cries out to be imitated with peacock herl, doesn't it?

Recent Discussions of this Adult

Can I get a better ID on this? 3 Replies »
Posted by Troutnut on May 18, 2007
Last reply on Dec 22, 2007 by Creno
I'm really just guessing. I'm too busy too key it out right now but I'd really like to know what it is. This was one of the main species the fish were taking (along with Apple Caddis) on the West Branch of the Delaware the other day.
Replygenitalia pics?
Posted by Litobrancha on May 19, 2007
jason can you take some better pictures of the genital terminalia? especially the tenth tergite and spines above the inferior appendages? nice specimen.
Reply

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