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> > Anybody know more about Maccaffertium terminatum?



This topic is about the Mayfly Species Maccaffertium terminatum

I have found no information about this species in angling literature, but one mediocre evening on the West Branch of the Delaware I found them to be a substantial part of the mixed bag of cahills and other mayflies causing a half-hearted rise of trout. Read more...

Female Maccaffertium terminatum Mayfly Spinner Female Maccaffertium terminatum Mayfly Spinner (5 Pictures)
Maccaffertium terminatum Mayfly Nymph Maccaffertium terminatum Mayfly Nymph (1 Pictures)
Female Maccaffertium terminatum Mayfly Dun Female Maccaffertium terminatum Mayfly Dun (2 Pictures)

There are 1 more specimens...

The Discussion

Post Reply
TroutnutJune 8th, 2007, 3:53 pm
Administrator
Bellevue, WA

Posts: 2737		I just wrote up what I found on the page for this species. I was mildly surprised to see so many of a species I've never seen mentioned in an angling context -- at least a few dozen throughout the evening. They piqued my curiosity.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
KonchuJune 9th, 2007, 6:05 am
Site Editor
Indiana

Posts: 505		What more do ya wanna know?
TroutnutJune 9th, 2007, 8:20 am
Administrator
Bellevue, WA

Posts: 2737		Hatch timing, habitat preference, quirky behavior... anything relevant to fishing that might be associated with this species.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
KonchuJune 11th, 2007, 6:39 pm
Site Editor
Indiana

Posts: 505		Larvae found on debris, rocks and aquatic vegetation in medium to large streams. Coarse sand/gravel substrate.

Spinners and duns are out around June-July in the Northeast and for a longer period (May-Aug) in the central and southern parts of its range.

Most of this was gleaned from:
Bednarik AF, McCafferty WP. 1979. Biosystematic revision of the genus Stenonema (Ephemeroptera: Heptageniidae). Can. Bull. Fish. Aquat. Sci. 201: 73 pp.

PS. This species was classified in the genus Stenonema until relatively recently.

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