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Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Mayfly Family Ameletidae (Brown Duns)

See Ameletus for details. It is the only genus in this family.

Specimens of the Mayfly Family Ameletidae

14 Nymphs
2 Female Spinners
4 Male Spinners
3 Male Duns
1 Adult

Recent Discussions of Ameletidae

Brown Dun hatch/swarm time?
10 replies
Posted by Konchu on Apr 25, 2009 in the species Ameletus ludens
Last reply on Apr 30, 2009 by Troutnut
Has anyone else watched a Brown Dun hatch or swarm? If so, what time of day did you see it, and how long did it last?

I came upon a woodland swarm late this evening. I thought I saw mating occurring higher above the stream. This would mean that parthenogenesis is not necessarily happening in "my" stream. I watched for awhile, but got distracted (venomous snake). I hope to catch it (the hatch, not the snake) again tomorrow night and note the egg-laying behavior and possibly nab some male adults for science. There's a range of nymph ages, so I should be OK, weather permitting.

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  • Zloty, J and Pritchard, G. 1997. Larvae and adults of Ameletus mayflies (Ephemeroptera: Ameletidae) from Alberta. Canadian Entomologist 129: 251-289.
» Family Ameletidae (Brown Duns)
Genus in Ameletidae
AmeletusBrown Duns24114
Family Range
Common Name
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