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Jbrw | June 26th, 2007, 8:50 pm | |
Posts: 5 | This poor image of an adult caddis was taken streamside on my pack in the Big Horn Mountains, WY at about 9,500 ft.. As the picture shows, the wings did not appear to have any spots and were tan. I am uncertain what genus exist in the area. I have observed but have not photographed the abundant encased larva there and will try to do better on my next trip, which is coming up soon. Most of the cases appear to be formed of rock and metal. | |
Taxon | June 26th, 2007, 11:54 pm | |
Site Editor Royse City, TXPosts: 1350 | Jbrw- Although the photo is not clear (or close) enough for me to see any detail, particularly the length of antennae, based on the wing shape and color, my guess would be Oecetis (Tan-Winged Long-Horn Sedge). You have (4) Oecetis species in Wyoming, Oecetis avara, O. disjuncta, O. inconspicua, and O. ochracea. | |
Best regards, Roger Rohrbeck www.FlyfishingEntomology.com | ||
Jbrw | June 27th, 2007, 6:15 am | |
Posts: 5 | Interesting. Your website is very helpful on follow-up, as there are no pictures of Oecetis that I can find on this site. How do you measure size? Based upon the thread count on the pack, I would estimate the size from head to wing tip at 11 mm, but I suppose you could measure the legs splayed out as they do and the antennae. I also wonder about the possibility of Lepidostomatidae from the desription on your site. The wings, while plain, display a distinctive, light brown ridge on the upper 2/3 that fans out onto the tip with the remainder of the wing showing more of a tan. | |
Taxon | June 27th, 2007, 7:54 am | |
Site Editor Royse City, TXPosts: 1350 | Jbrw- Interesting you should ask. A year ago this month, I posed the very same question to Dr. Richard Baumann: Dear Dr. Baumann- And, Dr. Baumann replies as follows: Roger, | |
Best regards, Roger Rohrbeck www.FlyfishingEntomology.com | ||
Jbrw | June 29th, 2007, 10:42 am | |
Posts: 5 | Taxon, assuming we are looking at Oecetis, what colors would the larva and pupa be. I'm getting crass here, I know, as I am trying to figure out what colors to use in emerger and nymph patterns for my trip. My "caddis green" offerings last summer weren't too successful, so I am leaning toward tan body and black or brown head. What the answer be different if we are looking at Lepidostomatidae? | |
Taxon | June 29th, 2007, 3:22 pm | |
Site Editor Royse City, TXPosts: 1350 | Jbrw- Assuming Oecetis, in addition to the green you apparently already have, I would suggest yellow or olive. Only one genus of family Lepidostomatidae resides in Wyoming, Lepidostoma, of which you have (8) species. The 11 mm length of your specimen is slightly beyond the 10 mm maximum length of adult Lepidostoma listed by Gary LaFontaine in Caddisflies. However, as to body color, pale yellow or pale tan to brown would likely be appropriate. | |
Best regards, Roger Rohrbeck www.FlyfishingEntomology.com | ||
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