Mayfly Family Ameletidae (Brown Duns)

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Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Ameletidae (Brown Duns)

Genus in Ameletidae
AmeletusBrown Duns	9	38

Common Name

Match	Common Name
	Brown Duns

Pictures Below ↓

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

Pictures of 9 Mayfly Specimens in the Family Ameletidae:

Specimen Page:12

Ameletus ludens (Brown Dun) Mayfly Nymph

View 9 Pictures

Collected March 29, 2005 from Salmon Creek in New York
Added to Troutnut.com by Troutnut on April 7, 2006

Ameletus ludens (Brown Dun) Mayfly Nymph

View 7 Pictures

Collected April 1, 2007 from Mystery Creek #62 in New York
Added to Troutnut.com by Troutnut on April 3, 2007

Ameletus (Brown Duns) Mayfly Nymph

View 7 PicturesI think this is a pretty early instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.) Ameletus nymph. It's certainly a striking one.

Collected May 6, 2007 from Mongaup Creek in New York
Added to Troutnut.com by Troutnut on May 18, 2007

Specimen Page:12

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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Jargon Defined:

Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.

Nymph: The juvenile, underwater stages of mayflies, stoneflies, dragonflies, and damselflies and other aquatic insects whose juvenile stages are covered by hard exoskeletons. The word can also refer to the fishing flies which imitate these creatures, in which case it is used as a blanket term for flies imitating any underwater stage of an invertebrate (except for crayfish and leeches).