Troutnut.com Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

> > shuck and belly

The Specimen

Baetis (Blue-Winged Olives) Mayfly DunBaetis (Blue-Winged Olives) Mayfly Dun View 14 PicturesThis dun molted most of the way into a spinner (though the wings got stuck) the evening after I photographed it, so I took some more photos of the spinner.

I found a female nearby, probably of the same species.
Collected September 19, 2006 from Mystery Creek #43 in New York
Added to Troutnut.com by on October 4, 2006

The Discussion

MartinlfDecember 23rd, 2006, 5:21 pm
Moderator
Palmyra PA

Posts: 2915
That sounds like some southern jive tune, doesn't it?

I seem to recall that we had a discussion about mayfly shucks a while back, in which we discussed the more opaque and dark coloration of invaria or rotunda shucks. These acerpenna shucks look much lighter, and greyish in color. Am I right? Are they also more translucent? What color are the nymphs, and what color Z=lon would you use to imitate a shuck on an emerger for this bug? Would this hold true for most baetids? This might explain the excellent luck I've had with the Little Lehigh olive emerger, (basically an RS2 design--see the Litle Lehigh Fly Shop website) which has a shuck of natural CDC that is fairly greyish in color.

Also, the first picture shows a clear difference in the color of the top and bottom of the abdomen, another good cue for dubbing color. Jason, these photos are amazing! I hope you have some luck with photos of emergers in the spring.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
GONZODecember 26th, 2006, 5:28 pm
Site Editor
"Bear Swamp," PA

Posts: 1681
Louis,

The greyish shuck in the photos is the shed pellicle of the dun as the adult transforms into a spinner. The grey (dun) color reflects the duller coloration of the subimago and should not be taken as indicative of the nymphal shuck. I believe that most Acerpenna nymphs are brown to brownish-olive. Most mayfly shucks are more substantial and retain more color than caddisfly shucks. I assume this is because the exoskeleton has more of a protective/camouflage function for final stage mayfly nymphs than for caddisfly pupae (which transform into the pharate adult stage within a shelter). Of course, paler mayfly nymphs (like some burrowing nymphs) will have more translucent shucks (less pigment).
MartinlfDecember 27th, 2006, 7:04 am
Moderator
Palmyra PA

Posts: 2915
Duh. I don't know what I was thinking--or I was just not reading Jason's descriptions as I clicked around. Thanks again.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

Quick Reply

You have to be logged in to post on the forum. It's this easy:
Username:          Email:

Password:    Confirm Password:

I am at least 13 years old and agree to the rules.

Related Discussions

TitleRepliesLast Reply
Re: Help identifying?
In the Identify This! Board by Doublezz105
3Jul 9, 2007
by Taxon
Re: E. invaria variation?
(9 more)

In the Identify This! Board by Brookyman
5Dec 19, 2012
by Brookyman
Re: Spinner Mayfly
In General Discussion by Jesse
2May 13, 2012
by Konchu
Re: Yes or No?
In General Discussion by Falsifly
21Apr 8, 2009
by Falsifly
Gray Drake Photos
In Siphlonurus quebecensis Mayfly Nymph by Oldredbarn
0
Re: caddis pupa & caddis adult for >>>> ID please <<<
(7 more)

In the Identify This! Board by Brookyman
1Aug 27, 2014
by Creno
Re: New member
In General Discussion by Jbaiocchi
23Jan 28, 2015
by Oldredbarn
Re: Baetid nymph color
In Male Baetidae Mayfly Nymph by Martinlf
1Dec 26, 2006
by GONZO
Hexagenia Limbata (Hex) Nymph in Captivity
In the Insect Order Ephemeroptera by Hdhungryman
0
Re: Baetis softhackle
In the Photography Board by Shawnny3
12Jul 9, 2012
by Crepuscular
Most Recent Posts
fall bluewinged olive coloration.
In Fly Tying by Partsman
Re: Stonefly?
In the Identify This! Board by Pdcox (Jmd123 replied)
Re: Nymphing set up.
In Fly Tying by FC54 (Martinlf replied)
Re: Pretty float down the Yakima Canyon
In Site Updates by Troutnut (Martinlf replied)
Re: Homage to Louis: the Davy Knot revisited
In Gear Talk by Entoman (Martinlf replied)
Re: Quick customer service compliment to Korkers
In Site Updates by Troutnut (Partsman replied)