Blue-winged Olives
Baetis
Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
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Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.
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Male Dolophilodes distincta (Tiny Black Gold Speckled-Winged Caddis) Caddisfly Adult Pictures
This caddis species was dancing high over the stream, spaced a foot or two apart across most of its width, very much like Ephemera mayfly spinners but with more side-to-side motion mixed in. There were more than enough to get the trout interested, but I wasn't able to stick around until they fell on the water (if they did at all).
This caddisfly was collected from Mystery Creek #42 in Pennsylvania on May 28th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.
Discussions of this Adult
Dolophilodes (Philopotamidae)
1 replies
Posted by Litobrancha on Jun 12, 2007
Last reply on Jun 12, 2007 by Troutnut
This is a male dolophilodes, probably distinctus.
You can distinguish philopotamids from hydropsychids by the ocellar head warts that are absent in hydropsychids.
D. distinctus is everywhere, along with Oecetis inconspicua, including perhaps the moon, inner four planets and in orbit. it is a beautiful insect however.
You can distinguish philopotamids from hydropsychids by the ocellar head warts that are absent in hydropsychids.
D. distinctus is everywhere, along with Oecetis inconspicua, including perhaps the moon, inner four planets and in orbit. it is a beautiful insect however.
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References
- Jacobus, L. M., Wiersema, N.A., and Webb, J.M. 2014. Identification of Far Northern and Western North American Mayfly Larvae (Insecta: Ephemeroptera), North of Mexico; Version 2. Joint Aquatic Science meeting, Portland, OR. Unpublished workshop manual. 1-176.
Male Dolophilodes distincta (Tiny Black Gold Speckled-Winged Caddis) Caddisfly Adult Pictures
Collection details
Location: Mystery Creek #42, Pennsylvania
Date: May 28th, 2007
Added to site: June 4th, 2007
Author: Troutnut
Date: May 28th, 2007
Added to site: June 4th, 2007
Author: Troutnut