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The increase in silt and other small particulates contributes to less species being in areas previously being rocky or gravelly. It also lessens chances for redds in that fry will not get enough oxygen. Insects will not have rocks or gravel to hide in, or to feed off of (algae, diatoms, etc.)...

There are reddish variations of Rhithrogena nymphs. They're fairly common in this area (Northern California). Here are some pictures of Rhithrogena nymphs taken at the Russian River. In this area about 1 in 20 nymphs have the reddish coloration. Th

Their case is actually kind of ramshackle for the larvae. Probably because they come out of their case to be swept downstream during their migrations to other areas. Probably in search of more food. They then rebuild the case. On the other hand the pupal cases are relatively strong.

These larvae were found in Mill Creek (tributary to Russian River). They're found in fast, rocky, cooler water. Common March-May. Mature larvae and pupae are about 6 mm long, larval cases and pupal cases 10 mm.

Yeah, but it was all I could find.

Ran across this article on Nerophilus californicus a while ago and thought I'd put it here. Interesting view on it's diet...

These larvae were found in Mill Creek (tributary to the Russian River). They are usually found in late spring through late summer in sandy areas with a fairly swift current. I nearly always found them burrowed down into the sand.

Day after Woodstock

I always remember Christmas dinner at my grandmother's when she was alive. The whole family would gather and we would have a pork roast, mashed potatoes, gravy, pickled herring with sour cream, headcheese, blood sausage wrapped in bacon, sauerkraut, and a dessert of apple or pumpkin pie. If you...

Cover of Tin Pan Alley

I always appreciated Eric Idles Xmas song.

This species of stonefly is found in the Russian River and Mill Creek. I haven't seen the adults emerge in the Russian River but have seen them emerge from Mill Creek. Several of the nymphs will crawl onto a large stone above water level and wriggle out of their shucks, spend a few minutes...