Hex Mayflies
Hexagenia limbata
The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
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This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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Mayfly Family Metretopodidae (Pseudo-Gray Drakes)
The mayflies of this family are large and elegant as adults and among the fastest-swimming of all mayfly species as nymphs. Sadly only one species (Siphloplecton basale) has been reported to produce fishable hatches, and even those are exceedingly rare.
Where & when
In 74 records from GBIF, adults of this family have mostly been collected during June (35%), July (20%), April (14%), August (12%), March (9%), and May (7%).
In 349 records from GBIF, this family has been collected at elevations ranging from -30 to 3524 ft, with an average (median) of 984 ft.
Family Range
Specimens of the Mayfly Family Metretopodidae
1 Male Dun
This one hatched on the same April Saturday that I saw the first Hendricksons of the season.
1 Male Spinner
I went to great comical lengths to swipe this spinner from the air with a little aquarium net I carry with me while I'm fishing. Siphloplecton basale spinners fly fast and high over the riffles, and there are never very many of them, so they're difficult to catch.
9 Nymphs
This one's stunned or freshly dead in the pictures, because the water in my photographing tank was a bit too warm for him after being under the bright light for a while.
This nymph has double front tarsal claws and double gills on the first three abdominal segments.
This nymph has double front tarsal claws and double gills on the first three abdominal segments.
This nymph has double front tarsal claws and double gills on the first three abdominal segments. This one has a distinct dorsal stripe.
This nymph has double front tarsal claws and double gills on the first three abdominal segments.
This nymph has double front tarsal claws and double gills on the first three abdominal segments.
This nymph has double front tarsal claws and double gills on the first three abdominal segments.
Discussions of Metretopodidae
S. basale on Clarks Creek, PA
1 replies
Posted by Wiconisco37 on Feb 4, 2009 in the species Siphloplecton basale
Last reply on Jun 10, 2009 by Martinlf
they were discovered on Clarks Creek by a man from halifax, PA
i dont know what their numbers were like thgough
i dont know what their numbers were like thgough
Start a Discussion of Metretopodidae
Mayfly Family Metretopodidae (Pseudo-Gray Drakes)
Taxonomy
Genus in Metretopodidae: Metretopus, Siphloplecton