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> > Lepidostoma sp.



Millcreek has attached these 10 pictures to aid in identification. The message is below.
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Late instars of panel case type. 11 mm larvae, 13 mm case.
Late instars of panel case type. 11 mm larvae, 13 mm case.
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Late instars of panel case type. 11 mm larvae, 13 mm case.
Late instars of panel case type. 11 mm larvae, 13 mm case.
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Early instars, panel case, 4-6 mm larvae and cases.
Early instars, panel case, 4-6 mm larvae and cases.
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Panel case larvae. 11 mm
Panel case larvae. 11 mm
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Turret case 8 mm. Larva 7mm.
Turret case 8 mm. Larva 7mm.
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Turret case 8 mm. Larva 7mm.
Turret case 8 mm. Larva 7mm.
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Turret case 8 mm. Larva 7mm.
Turret case 8 mm. Larva 7mm.
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Larva 7 mm.
Larva 7 mm.
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Larvae 7 mm.
Larvae 7 mm.
Shown Full Size
Larva 7 mm.
Larva 7 mm.
MillcreekApril 19th, 2015, 1:54 pm
Healdsburg, CA

Posts: 356
These two species are found in Mill Creek (tributary to the Russia River, near Healdsburg, CA). There are both a panel case and a turret case. Panel case is the first one shown. These insects are found in leafpacks for the panel case and grazing diatoms for the turret case.
OldredbarnApril 19th, 2015, 2:07 pm
Novi, MI

Posts: 2608
Mark. Great pictures as always...I'm beginning to think that there may be a book hiding in here somewhere and we are all getting a preview. :)

Spence
"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
MillcreekApril 19th, 2015, 2:23 pm
Healdsburg, CA

Posts: 356
Spence - No book right now. I'm too damn lazy to write it.:)
OldredbarnApril 19th, 2015, 2:39 pm
Novi, MI

Posts: 2608
Spence - No book right now. I'm too damn lazy to write it.:)


Write it or not brother, we here are enjoying it in serial form! :)

Spence
"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
MiltRPowellApril 19th, 2015, 3:25 pm
Posts: 106Spence, you are on point there, great stuff....MillCreek I have always wanted ta comment that your posts are great stuff. But I lazy, Even that I live in east coast & alot of your stuff is west coast, it is interesting & done well. Thanks for taking the time to share, on that note I wouldn't call that lazy... For you do go & show the extra mile in your works. Thanks again, M.R.P.
flyfishingthecreekM.R.P.
CrenoApril 19th, 2015, 6:05 pm
Grants Pass, OR

Posts: 305
Millcreek - I like the cases going from turret to rocks and rocks to panels. These are great examples of the variability in case style with populations and between instars. Do you see any setal or other color differences (beside the legs) between the two species? Are you collecting the same locality on Mill Creek all the time or are there major altitudinal/vegetational differences in these collections?
MillcreekApril 19th, 2015, 6:35 pm
Healdsburg, CA

Posts: 356
Creno - These were collected in the same area of Mill Creek (the same 100 yards). They are separated in time though, with the turret cases coming first in July and grazing on diatoms, and with the panel cases showing up around September and grazing on leaves. I haven't noticed any setal differences between the two although there may be some.

MiltRPowell - Thanks very much for the kind words.

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