Brown Dun

(Siphlonuridae Ameletus)

[image of nymph]

(body length approx. 0.8 cm)

The above is a photo of a nymph, caught early in the spring. Ameletus are swimmer nymphs, with a webby tail to help push them along. They are somewhat difficult to photograph for this reason.

[image of spinner]

(body length approx. 0.9 cm)

This is a photo of an adult, after it has molted into its "spinner" stage. I'm still not exactly sure that this is what I think it is, so take my ID with a grain of salt... (the nymph however, I'm fairly sure is right.)

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The McKenzie Page
last update: Oct 30, 1999

# dmason@zebu.uoregon.edu