Troutnut Forum > Fly Hatch Talk > acentrella nymph
This topic is about the Mayfly Genus Acentrella
The only Acentrella species known to be important to anglers is Acentrella turbida. See its species page for distribution and timing details. Read more...
The Discussion
| Goose | November 3rd, 2006, 10:20 am | |
| Posts: 29 | Hi Jason! Do you have a picture of the (acentrella-miniature BWO nymph) on the site? I've been fishing them and wanted a better idea of how they look. Thanks, Bruce | |
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| GONZO | November 3rd, 2006, 2:19 pm | |
| "Bear Swamp," PA Posts: 866 | Hi Goose, I don't see a picture, but the tiny swimming nymphs of Acentrella are quite similar to other Baetidae nymphs. Specifically, they are tiny, slim, two-tailed nymphs that are often a paler or brighter olive than many of the more brownish or brownish-olive genera. Acentrella turbida is one of the most common species in the East (actually transcontinental in distribution); but Plauditis punctiventris is a very similar two-tailed species in a different genus and is also quite common. For general reference, there is a picture in Hatches (labeled as "Pseudocloeon nymph" in my original '75 copy). From a fishing standpoint, none of the finer distinctions matter that much. I'd fish a tiny version of whatever you normally use to imitate "Baetis" nymphs. If you can't find a sample of the nymph for color-matching, tie a light and dark olive version and let the trout decide. PS--In earlier books, A. turbida may be listed as Pseudocloeon carolina or Pseudocloeon turbidum, and P. punctiventris may be listed as Baetis punctiventris or Pseudocloeon punctiventris. | |
| Taxon | November 3rd, 2006, 8:29 pm | |
| Mercer Island, WA Posts: 478 | Goose- In addition to Gonzo's reference, Mayflies, The Angler And The Trout by Arbona has an Acentrella insignificans (Baetis insignificans) larval abdomen illustration on page 157 (FIG. 56), and Mayflies by Ted Fauceglia has color photos of both an Acentrella immature nymph and an Acentrella mature nymph on page 95. | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
| GONZO | November 3rd, 2006, 9:16 pm | |
| "Bear Swamp," PA Posts: 866 | Hey Roger! Any idea what's up with the old Pseudocloeon anoka? Sometimes I see it listed as a synonym of P. punctiventris, yet Mayfly Central lists it as Heterocloeon anoka. Seems like the entomologists have nearly as much trouble sorting out these little buggers as I do! :) | |
| Taxon | November 3rd, 2006, 10:22 pm | |
| Mercer Island, WA Posts: 478 | Gonzo- Several years ago, I believe that Mayfly Central listed Pseudocloeon anoka as a synonym of Plauditis punctiventris, and that Plauditis punctiventris was subsequently reclassified as Heterocloeon anoka. However, I can't be certain, because at that time, I hadn't yet gotten clever enough to save all Mayfly Central versions, and the current Mayfly Central Species List doesn't seem to reflect the first part of that history. | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
| GONZO | November 3rd, 2006, 11:32 pm | |
| "Bear Swamp," PA Posts: 866 | Roger, I believe the current list includes both H. anoka and P. punctiventris as two distinct species in two distinct genera. Perhaps they are hedging their bets until the little two-tailed bastard reveals its true identity--kind of like Superman and Bizarro Superman. (I'm sure this is fun for you and me, Rog, but I'll bet nobody else is entertained in the least!) :) | |
| Troutnut | November 4th, 2006, 12:26 am | |
| Fairbanks, AK Posts: 1113 | I'll bet nobody else is entertained in the least Guess again! ;) | |
| Jason Neuswanger The Troutnut | ||
| Taxon | November 4th, 2006, 2:30 am | |
| Mercer Island, WA Posts: 478 | Hey Roger! Gonzo- Oh, shoot. When you said "as a synonym on P. punctiventris", I mistakenly read that as Plauditus punctiventris rather the Pseudocloeon punctiventris. Anyway see Dean Hansen's article from the Midwest Fly Fishing Magazine archives for "the rest of the story." Incidentally, when I try to follow the trail, it makes me crazy, so I have to go read a book for a while. | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
| GONZO | November 4th, 2006, 11:02 am | |
| "Bear Swamp," PA Posts: 866 | Roger, Thanks for going to all the trouble, but after reading the article I'm more confused than ever. Now my head really hurts! According to the article, the former Pseudocloeon anoka reverted to the prior description of Pseudocloeon punctiventris (which has precedence) and was later reclassified as Plauditis punctiventris. All well and good--Plauditis punctiventris is currently listed as a valid genus/species. But it doesn't explain how Pseudocloeon anoka reappears as a synonym for Heterocloeon anoka, another valid but completely different genus/species. Oh, Luuucy! I think the gang at Mayfly Central has some 'splainin' to do! Meanwhile, I'm going to take a nap until my headache goes away. :) | |
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