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| Taxon | July 10th, 2006, 4:09 pm | |
Site Editor Mercer Island, WAPosts: 921 | Jason- Your identification appears spot on. You may well have already considered them, but here are three key matches: 1} Genitalia illustrated in Leonard & Leonard p. 125 figure 75, which seems to match the claspers perfectly, and would likely match the penes perfectly as well, were they not a bit damaged 2) Sternites "with four small dots sometimes elongaged into narrow streaks" as described in Leonard & Leonard p. 50 3) "stigmatic area of fore wing milky" as described in Leonard & Leonard p. 50 | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Troutnut | July 10th, 2006, 8:39 pm | |
The Admin Fairbanks, AKPosts: 2021 | Thanks for double-checking me. It's that much more convincing, now, because I arrived at needhami by different means. I used the keys from Allen & Edmunds' revision of the Ephemerellidae, though they can be a bit difficult to follow. | |
| Jason Neuswanger The Troutnut | ||
| GONZO | October 14th, 2008, 9:12 pm | |
Site Editor "Bear Swamp," PAPosts: 1636 | I believe that this specimen is Eurylophella. In fact, except for the male dun identified by David Funk (#773), all of the duns and spinners (#549, #597, #546, #548, #598) in the E. needhami section appear to be Eurylophella. There also seems to be a male Eurylophella spinner (#544) in the E. invaria section, and a female Eurylophella spinner (#600) that has not been identified. Although some shots of the "naughty bits" of this specimen show damage or extraneous clutter, the first shot is clear and represents Eurylophella genitalia as depicted in McDunnough's 1931 review of the "bicolor" group--broad at the base, tapering apically, with a slight excision at the apex. The claspers of E. needhami are quite similar to Eurylophella, but the shape of the penes are very different. (McDunnough's original 1925 description has an illustration of the elongate tips of needhami.) The characteristic Eurylophella genitalia can also be seen in #549 and the specimen (#544) in the invaria section. Compare the genitalia of #544 (Eurylophella) to #545 (E. invaria). The latter has the bulge at the tip of the second segment of the clasper and the penes shape that is attributable to invaria. In addition to Dr. Funk's comments (in the thread associated with #773) about Eurylophella subs having blackish wings and orange eyes (males), these traits are also worth noting: 1. Bodies are usually brown (ranging from dark to orangish or yellowish brown), and legs are pale yellowish, often with a dark spot or spots on the coxae and sometimes on the trochanters. 2. Abdomen is somewhat slender with a long 9th segment. (This feature is mentioned in most keys to the nymphs, but not the adults. I think it is one of the easiest ways to recognize this genus.) 3. Although variable, many have a dorsal pattern of longitudinal stripes. 4. Many species have a ventral pattern of (often 4) spots and/or lateral slashes. 5. Tails usually have dark marks at segments. | |
| Trtklr | October 17th, 2008, 9:10 am | |
Banned MichiganPosts: 115 | why don't i see people tying the front legs of insects onto their flies? I try to set a few hairs forward when I tye off hackle and trim as needed, because it seems to me that there is almost always something coming off the front of an insect whether it be legs or antenna. | |
| I have seen nothing more beautiful than the sunrise on a cold stream. | ||
| Title | Replies | Last Reply |
| Re: Interesting clinger species In the Identify This! Board by CalebBoyle | 7 | Mar 31, 2007 by GONZO |
| Re: Not invaria In Male Eurylophella Mayfly Spinner by GONZO | 2 | May 24, 2009 by GONZO |
| Re: Small Sulphurs In Male Ephemerella dorothea dorothea Mayfly Dun by GONZO | 1 | Oct 29, 2008 by Troutnut |
| Re: Will the real Ephemerella needhami please stand up? In Ephemerella needhami Mayfly Dun by GONZO | 16 | Aug 2, 2011 by PaulRoberts |
| Re: Diphetor In Baetis Mayfly Nymph by Earlfishman | 5 | Apr 13, 2007 by Troutnut |
| Thoughts on this identification? In Male Eurylophella Mayfly Spinner by Troutnut | 0 | |
| Re: Dark Sulphur In Male Ephemerella invaria Mayfly Dun by Martinlf | 10 | May 24, 2009 by Wiflyfisher |
| Re: A Couple Bugs I Ran Into Yesterday In the Identify This! Board by DayTripper | 7 | May 12, 2008 by GONZO |
| Moving some topics around In General Discussion by Troutnut | 0 | |
| subnotatus? In Male Ameletus oregonensis Mayfly Spinner by GONZO | 0 |
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