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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)
Male Maccaffertium terminatum Mayfly Dun Male Maccaffertium terminatum Mayfly Dun (6 Pictures)
Maccaffertium terminatum Mayfly Nymph Maccaffertium terminatum Mayfly Nymph (1 Pictures)

There are 2 more specimens...

The Discussion

Post Reply
TroutnutJune 8th, 2007, 3:53 pm
The Admin
Fairbanks, AK

Posts: 2020		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
The Troutnut
KonchuJune 9th, 2007, 6:05 am
Site Editor
Indiana

Posts: 364		What more do ya wanna know?
TroutnutJune 9th, 2007, 8:20 am
The Admin
Fairbanks, AK

Posts: 2020		Hatch timing, habitat preference, quirky behavior... anything relevant to fishing that might be associated with this species.
Jason Neuswanger
The Troutnut
KonchuJune 11th, 2007, 6:39 pm
Site Editor
Indiana

Posts: 364		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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