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These are huge mayflies. Hexagenia limbata, by far the most important species, is the second largest mayfly in the United States. The largest is its close relative, Litobrancha recurvata, which until recently was also in the genus Hexagenia.
Two minor species, Hexagenia atrocaudata and Hexagenia rigida, may be noticed later in the season than limbata.
Read each species page for emergence and other details.
There are 28 more specimens...
Troutnut | March 20th, 2007, 6:18 pm | |
Administrator Bellevue, WAPosts: 2737 | I'm reading up on mayfly rearing in preparation for this season, including Needham's 1935 classic "The Biology of Mayflies." (Very rare and somewhat outdated, but the most comprehensive book ever written about mayflies by far.) I found this quote strangely casual:The eggs of Hexagenia may be obdatined from a subimago by placing her on the surface of a beaker of water and snipping off her head. She will pour them all out immediately from both oviducts -- in the case of H. occulta some 5000 of them (Needham 1908, p. 260). I've got to wonder who first thought to try that. | |
Jason Neuswanger, Ph.D. Troutnut and salmonid ecologist | ||
GONZO | March 20th, 2007, 6:53 pm | |
Site Editor "Bear Swamp," PAPosts: 1681 | If it weren't for the date, I'd guess Wes Craven! :( No, wait...the Queen of Hearts! | |
Taxon | March 20th, 2007, 9:56 pm | |
Site Editor Royse City, TXPosts: 1350 | Jason- When animal dies, there is loss of muscle control, which would result in release of anything being internally retained through that device, presumably including Hexagenia eggs. | |
Best regards, Roger Rohrbeck www.FlyfishingEntomology.com | ||
Title | Replies | Last Reply |
Re: This is not Ephemera simulans In Hexagenia limbata Mayfly Nymph by Beardius | 1 | Aug 2, 2008 by Troutnut |
Re: latin names of bugs In General Discussion by Goose | 38 | Dec 6, 2006 by GONZO |
Re: Biggest Mayfly In the Identify This! Board by Al514 | 3 | Sep 17, 2007 by Troutnut |
Re: Mayflies In Male Hexagenia atrocaudata Mayfly Spinner by Fishcraze | 2 | May 31, 2009 by Trtklr |
Re: Hexagenia Mayflies In General Discussion by Motrout | 2 | Jun 30, 2010 by Oldredbarn |
Re: C'mon spring In General Discussion by Stokes | 28 | Mar 8, 2016 by PaulRoberts |
Re: Hex nymph behavior In the Mayfly Species Hexagenia limbata by Millerpa | 9 | Dec 5, 2008 by Beardius |
Re: Hexagenia bilineata? (2 more) In the Identify This! Board by 149113 | 6 | Jul 23, 2016 by 149113 |
Re: Need help Identifying Mayfly? In the Identify This! Board by JC_in_VA | 13 | Jun 5, 2011 by Jmd123 |
Re: Big and Little Hexes? In the Identify This! Board by CaseyP | 7 | Jul 4, 2013 by CaseyP |