Hex Mayflies
Hexagenia limbata
The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
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This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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DayTripper on May 12, 2008May 12th, 2008, 8:26 am EDT
Here are some bugs I found waiting for the Hendricksons to pop this weekend on the Battenkill. I believe this first one to be Maccaffertium vicarium
Here's some others I haven't identified yet
I've got different angles on the Hendrickson Spinner, and the Brown Stone, as well as the Beetle- if they're needed. Also some more pics of different vicarium nymphs, some have a slightly different coloration.
Here's some others I haven't identified yet
I've got different angles on the Hendrickson Spinner, and the Brown Stone, as well as the Beetle- if they're needed. Also some more pics of different vicarium nymphs, some have a slightly different coloration.
GONZO on May 12, 2008May 12th, 2008, 9:23 am EDT
Just on a quick glance:
The vicarium ID on the heptageniid nymph seems reasonable; the stonefly nymph looks like a perlodid; the (male) Hendrickson spinner ID seems right (though missing a tail); the big beetle looks like some sort of "borer," but I have no clue about the hitchhiker; the caddisfly larva is a hydropsychid; and I'd guess that the stonefly adult could be in Taeniopterygidae. (Dave could probably sort that out for you.)
The vicarium ID on the heptageniid nymph seems reasonable; the stonefly nymph looks like a perlodid; the (male) Hendrickson spinner ID seems right (though missing a tail); the big beetle looks like some sort of "borer," but I have no clue about the hitchhiker; the caddisfly larva is a hydropsychid; and I'd guess that the stonefly adult could be in Taeniopterygidae. (Dave could probably sort that out for you.)
DayTripper on May 12, 2008May 12th, 2008, 2:52 pm EDT
Here are some more pics of the adult stonefly
http://daytripperblog.com/2008/05/12/medium-brown-stonefly-taeniopterygidae/
http://daytripperblog.com/2008/05/12/medium-brown-stonefly-taeniopterygidae/
Raider83 on Jun 27, 2008June 27th, 2008, 6:24 am EDT
Daytripper, I think the mystery larva is a predaceous diving beetle larva
GONZO on Jun 27, 2008June 27th, 2008, 10:48 am EDT
Raider83,
Some Dytiscidae larvae have a superficial resemblance to some caddisfly larvae. If this larva had been photographed in the water (and from different angles), I think the differences would be easier to see.
Some Dytiscidae larvae have a superficial resemblance to some caddisfly larvae. If this larva had been photographed in the water (and from different angles), I think the differences would be easier to see.
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