Some bugs from the Russian River

[Mark Melton]

These are a few macroinvertebrates from the Russian River in California. They're also found in Washington.

Epeorus albertae


Ameletus sp.


Drunella sp.


Rickera / Kagotus sp.


Siphlonurus sp.


Callibaetis sp.


Epeorus longimanus

 

[cabezon]

Great pictures. It would be interesting to have a ventral perspective too. Are they lighter underneath and darker on top? In some species, the eyes are very prominent and in others, the eyes are more cryptic.
Steve

 

[Mark Melton]

Most are lighter underneath except for the Drunella which can be just about as darkly colored ventrally as dorsally. The rest vary in color ventrally from white to a lighter color. The reason the eyes are more prominent in some species is that the males tend to have larger eyes (at least in mayflies).

 

[long_rod_silvers]

Wow, great pictures!

 

[crazywednesday]

Wow, my flies look nothing like these great pictures.

 

[Troutnut]

Nice pictures.

Your Drunella looks like flavilinea from what I can see in this picture. The abdominal spines seem more "broadly triangular" than the long sharp ones I've photographed on coloradensis.

 

[Mark Melton]

Thanks.

It probably is a flavilinea. At least according to Meyers and McCafferty who list it for this part of California.

 

[5weight]

Thanks for the great shots, an excellent resource for tiers.

 

[BearBio]

I am a biologist and learned some things from you!

 

[John svah]

I woulda called that drunella a stenonema but I’m hella rusty having not cracked my entomology book in 20 years.

 

[John svah]

A ha.
when I studied entomology I was a fighting terrapin at the university of Maryland. It appears stenonema lives east of the Mississippi....
my apologies