Blog & Latest Updates
Fly Fishing Articles
Insects by Common Name
> > Small stonefly photos
The Specimen
Amphinemura (Tiny Winter Blacks) Stonefly Adult
View 5 PicturesA few of these tiny stoneflies were among the only species of aquatic insect adults in the air on this particular afternoon, with most of the action coming from a species of Epeorus mayfly. I somehow forgot to photograph this one on the usual ruler, but I recall it was very, very small, with an abdomen no more than 1mm in girth and the body, not counting the wings, probably just 5-7mm long.
View 5 PicturesA few of these tiny stoneflies were among the only species of aquatic insect adults in the air on this particular afternoon, with most of the action coming from a species of Epeorus mayfly. I somehow forgot to photograph this one on the usual ruler, but I recall it was very, very small, with an abdomen no more than 1mm in girth and the body, not counting the wings, probably just 5-7mm long.Collected September 6, 2006 from Mystery Creek #23 in New York
Added to Troutnut.com by on October 3, 2006
Added to Troutnut.com by on October 3, 2006
The Discussion
| JaneBug | January 25th, 2007, 6:36 pm | |
| Posts: 1 | The stonefly in this series of photos is not a Capniidae. It is a Nemouridae, a female Amphinemura. The yellow abdomen has eggs inside. Message from a stonefly researcher from Pennsylvania. | |
| Troutnut | January 25th, 2007, 8:33 pm | |
 Administrator Bellevue, WAPosts: 2737 | Thanks! I've switched her over to that genus. | |
| Jason Neuswanger, Ph.D. Troutnut and salmonid ecologist | ||
| Taxon | January 26th, 2007, 7:34 am | |
 Site Editor Royse City, TXPosts: 1350 | JaneBug- Perhaps you could educate me a bit concerning female adult stonefly anatomy. What are those abdominal appendages (pointed to by red arrows) called in my blowup of Jason's ventral photo?  In case JaneBug is not still monitoring this thread, if anyone else knows the answer to my question, please enlighten me. Thanx. | |
| Best regards, Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Taxon | January 27th, 2007, 10:21 pm | |
Site Editor Royse City, TXPosts: 1350 | David- Three tails? Seems like one too many. | |
| Best regards, Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Troutnut | January 28th, 2007, 9:12 am | |
Administrator Bellevue, WAPosts: 2737 | I don't think he's suggesting three tails. The two lower arrows look like they're both pointing to the same bottom tail. What is that middle one supposed to be pointing at? | |
| Jason Neuswanger, Ph.D. Troutnut and salmonid ecologist | ||
| Taxon | January 28th, 2007, 10:03 am | |
Site Editor Royse City, TXPosts: 1350 | Jason- Is the lower tail bent back on itself or something? If so, the middle arrow is pointing at the bent back section. Otherwise, there would appear to be a second appendage just above the lower tail, at which the middle arrow is pointing. | |
| Best regards, Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Troutnut | January 28th, 2007, 12:03 pm | |
Administrator Bellevue, WAPosts: 2737 | Hmm... if I look at it just right, the wing vein pattern in the background kinda forms a shape that could be mistaken for an abdominal appendage. Is that what you're looking at? I'm really just seeing the two obvious symmetrical structures, top and bottom. It's very possible that you have a monitor that really brings out the contrast in that picture and makes something else look like part of the abdomen. (I can kind of see something if I tilt my laptop LCD just right, but I think it's nothing.) | |
| Jason Neuswanger, Ph.D. Troutnut and salmonid ecologist | ||
| Taxon | January 28th, 2007, 2:54 pm | |
Site Editor Royse City, TXPosts: 1350 | Jason- Hopefully, this will help. I've blown it up about 50%, turned up the contrast significantly, and labeled the arrows. I'm talking about the appendage, labeled b, which comes straight out of the abdomen, as compared to the appendage labeled c, which comes out at a slightly upward angle as compared to the (imaginary) horizon. Can you see it better now? | |
| Best regards, Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Troutnut | January 28th, 2007, 4:49 pm | |
Administrator Bellevue, WAPosts: 2737 | I think what you've labeled appendage C is not an appendage, but a shadow or vein on the wings in the background. A and B are matching appendages on either side of the abdomen, and C is an illusion. I think. | |
| Jason Neuswanger, Ph.D. Troutnut and salmonid ecologist | ||
| CaseyP | January 28th, 2007, 6:15 pm | |
 Posts: 653 | on my monitor, imagine a dumbbell on end. a shows the top bell and b and c show the bottom bell. what's hard to see is the bottom of the rounded shape of the top cerci. i think... | |
| "You can observe a lot by watching." Yogi Berra | ||
Quick Reply
You have to be logged in to post on the forum. It's this easy:
Related Discussions
| Title | Replies | Last Reply |
Re: Need help with identification In the Identify This! Board by Troutal | 15 | Mar 30, 2017 by Crepuscular |
Leptocerid In the Photography Board by Creno | 0 | |
| Re: basic bug identification on stream In the Identify This! Board by Adirman | 1 | Aug 30, 2010 by GONZO |
| Re: Bald-Tailed Baetidae In General Discussion by Dickybird | 6 | Sep 7, 2021 by Konchu |
| Re: Olives In the Identify This! Board by Martinlf | 3 | May 3, 2009 by Martinlf |
Re: Spring Creek ID   In the Identify This! Board by DOS | 3 | Mar 17, 2009 by DOS |
| Probably another E. vitreus In Male Epeorus vitreus Mayfly Spinner by GONZO | 0 | |
| Another vitreus In Female Epeorus vitreus Mayfly Spinner by GONZO | 0 | |
Re: Unidentified Baetidae     (2 more) In the Identify This! Board by Benthosfan | 8 | May 5, 2021 by Benthosfan |
| Re: Emergence period of green drakes In the Mayfly Species Ephemera guttulata by Beardius | 5 | Dec 5, 2008 by Beardius |
Troutnut.com is copyright © 2004-2024 Jason
Neuswanger (email Jason). See my FAQ for information about use of my images.
privacy policy
privacy policy