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March Brown - Maccaffertium vicarium
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This was one I came across on Kettle Creek on April 27, 2010 at about 3:00 pm. Again size #14 or even maybe a #12. It was a cool and sunny day.

Common Name: March Brown
Latin: Maccaffertium vicarium
Hatches Late morning - evening, early May - late May

Tails: 2
Fore wing: molted
Hind wing: present
Hind wing costal: yes
Body length: 12-14 mm
Hind wing costal bump: present or absent
Flat head: yes or no
Time of day:
Date:
Body Color:

Freestone streams: Kettle,

Attach file:



jpg  myfly2.jpg (34.08 KB)
1_4f0f115323452.jpg 350X234 px

Posted on: 2012/1/12 11:59

Edited by dkile on 2012/1/15 18:59:57
Edited by dkile on 2012/4/19 14:32:33


Re: Need to figure this one out

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If it was June instead of April, I'd guess a Slate Drake but I think April is way too early for them.

Posted on: 2012/1/12 12:03


Re: Need to figure this one out

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March Brown
I've often seen them just beginning to trickle off up there the last week of april - even though their traditional emergence period is in may

Posted on: 2012/1/12 12:09


Re: Need to figure this one out
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Bill,

We figured it was a March Brown too. I was with Ron, who you meet on the Little J last year and we figured it was very early as well. If I recall it was a little warmer earlier that week. Naturally when I arrived it got cold, windy and the fish shut down.

Still like to hear other thoughts.

Posted on: 2012/1/12 12:19


Re: Need to figure this one out

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I'd agree with Dryfly too. MB. It should be noted dry warm Springs will/could advance any particular hatch. Like wise, if you have weather like last Spring, then the hatches could be late. Of course I said "Could" as there are always variables to be considered.

Posted on: 2012/1/12 12:23


Re: Need to figure this one out

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2010 was the year of the very early hatches for just about every bug I encountered.

Posted on: 2012/1/12 12:28


Re: Need to figure this one out

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I've never seen them that early but that is interesting to know. I'm loving this new forum. I've got a lot to learn and this should certainly help.

Thanks Dave and Mods!

Posted on: 2012/1/12 12:29


Re: Need to figure this one out

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BAETIDAE Callibaetis sp. SPECKLED WING OLIVE Body- RICH GREYISH OLIVE wing-MED.BLUE DUN,MOTTLED legs-MOTTLED LIGHT BLUE DUN size-14-16 COMMON IN NORTH CENTRAL PA. 04/16/00 tails-2 Formerly-> B.Callibaetis sp.

Posted on: 2012/1/12 12:57
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Re: Need to figure this one out

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I'm goin with March Brown as well. I think I see a pretty large hind wing there. Callibaetis have tiny hind wings. IF what I think I see is a large hind wing, then Callibaetis is eliminated.

Posted on: 2012/1/12 13:13


Re: Need to figure this one out

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BAETIDAE Callibaetis hatches every year about that time all over the north central region and is mistaken for MB's and gray fox all the time..had a good hatch this past spring but water was to high on pine, but smaller streams produced..

Posted on: 2012/1/12 13:55
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Re: Need to figure this one out

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Here is another one that is mistaken for MB's too:speckled wing dun; related to calibaetis

Attach file:



jpg  speckled wing dun 6-1-07.jpg (113.64 KB)
112_4f0f2d42dc434.jpg 800X600 px

Posted on: 2012/1/12 13:58
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sandfly

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Re: Need to figure this one out

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I'll trust the biological markers, such as hind wing size, over color and timing, every time. They usually aren't enough to close the book on an ID, but they're enough to eliminate a number of the possibilities.

March Brown - mottled wing, 2 tails, large obvious hind wing
Callibaetis - mottled wing, 2 tails, small minute hind wing

The picture isn't perfect, but if that is indeed a large hind wing like I think it is, then Callibaetis would be eliminated. I'd remain open to other ID's with the large hind wing, and there's still a number of possibilities.

It's a little early for March Browns in those parts, but not ridiculously so. I'm stickin with it for now.

Posted on: 2012/1/12 14:09


Re: Need to figure this one out

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Your latest picture I'd guess to be a Baetisca genus, of the Baetiscidae family (armored mayflies). Despite the similarity in names, it's an entirely different family than Baetidae, and not all that closely related to Baetis or Callibaetis.

http://www.troutnut.com/specimen/731

Posted on: 2012/1/12 14:15


Re: Need to figure this one out

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never said it was related, just another mistaken for the MB. Here it comes off the end of may-beginning of June. On a breezy day they sail like small sailboats all over and the browns go nuts.. Most guys who are not sure of what species group alot of speckled flies as MB's and Foxes when they are not..See it all the time on the streams..

Posted on: 2012/1/12 14:37
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So many Fish, So little time !!!
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Re: Need to figure this one out

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Lower Penns creek. Late April 2009

Click to see original Image in a new window

Posted on: 2012/1/12 14:59



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