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Photo#377295
Water penny - Eubrianax edwardsii

Water penny - Eubrianax edwardsii
Windy Hill OSP, San Mateo County, California, USA
March 6, 2010
Size: 10-15mm
I found one in 9/07 in the same spot (a creek). I don't know if it's the same thing; the marks are darker.

Cheryl Barr wrote: "The photo
Cheryl Barr wrote: "The photo of the one in situ from San Mateo is fuzzy but I'm pretty sure it's our other water penny, Eubrianax edwardsii (LeConte). We usually don't ID larvae to species, but it's safe in this case because there are no co-occurring species in these genera"

 
Are you saying two species
are never found in the same stream? Unless you're just refering to populations in California I have to dispute that as I have found larvae of two species in the same stream and at the same time in New Hampshire:

 
If I read the comment correctly,
two species from the same genus do not co-occur.

 
Ah, that would make sense.
I didn't read it carefully enough.

 
As far as I recall she meant
As far as I recall she meant that here in the West, there is only one species from this genus....

 
Thanks, Martin.
I'm not half as sharp as I think I am at 3:07 AM ;-)

 
No worries, at that time I am
No worries, at that time I am even unable to write....;-)

Moved

Moved
Moved from ID Request.

Looks like
Eubrianax.

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