This is one of the most widespread and abundant Baetis species, and it may produce fishable hatches under a variety of conditions.
» Species flavistriga (BWO)
This species is known in angling books by several old synonyms (Synonym: A former name of a taxon, usually a species. Entomologists frequently discover that two insects originally described as different species are one in the same, and they drop one of the names. The dropped name is said to be a synonym of the remaining name. These changes take a while to trickle into the common knowledge of anglers; for example, Baetis vagans is now a synonym of Baetis tricaudatus.), including Baetis quebecensus, Baetis levitans, Baetis cingulatus, and Baetis phoebus, in addition to the correct name. Where & When
Regions:The first flies of this species make their appearance a few weeks after Baetis tricaudatus. Because the species is a combination of widely varying types in different places, it's hard to piece the information together into reliable hatch dates for the different broods in any given location. The best hatches for which this species is credited occur in June.Nymph BiologyCurrent Speed: Any; best in fast
East, Midwest, WestTime Of Year (?):
May through August
Pictures of 3 Mayfly Specimens in the Species Baetis flavistriga:
Male Baetis flavistriga (BWO) Mayfly Nymph
View 8 PicturesThis nymph keys to Baetis assuming the villipore is present (hard to see in my photos or scope), and within that genus it tentatively keys to the flavistriga species complex, of which Baetis flavistriga itself is by far the most common in Washington state, so that's the most likely ID.
Recent Discussions of Baetis flavistriga
Baetis flavistriga computatii 7 Replies »
Posted by CaseyP
on Jan 22, 2007
Last reply on Jan 19, 2009 by Taxon
pleased to report the emergence of a new baetis flavistriga which i have christened computatii
forum visitors using the Firefox browser who put troutnut.com on their bookmarks toolbar have undoubtedly noticed a tiny dark mayfly icon in a blue box next the bookmark.
well, it's breeding. came back this evening from a week out of town to discover that the little troutnut computatii had a pal over next the hotmail.com bookmark where formerly there was only a generic white icon. am waiting for it to show up next the other two sites that have only generic icons.
now our resident boffins will help me with the Latin ending on the new name, (i tried to use the genitive plural) and then we'll ask Jason how he got these virtual flies to multiply.
Posted by Konchu
on Jan 18, 2009
Anyone have observations that they are willing to share of different flavistriga broods?Reply
Jason says that B. flavistriga is a "combination of widely varying types in different places, it's hard to piece the information together into reliable hatch dates for the different broods in any given location." This is stated very well.
As part of my bug work, I'm trying to tease apart some of these "varying types" to see what, if anything, they might represent. Tapping into the experience base here might help.
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