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Water beetle? - Helichus

Water beetle? - Helichus
Pasadena, CA
Size: a few millimeters
Found this bug inside the water of the Riparian Canyon community.

Moved from ID Request.

Based on the elytral pubescence pattern and what appear to be antennae with enlarged basal segments instead of being filiform. I suspect it's H. striatus, but I agree we need to see the specimen dry.

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this is an elmid of sorts... not sure beyond that [Dubiraphia??] -- it's a rather tough group (~2 dozen spp. in 13 genera in CA), and a higher-res photo of a dry specimen will certainly help

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