**Mayfly Genus Maccaffertium (March Browns and Cahills)**

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Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Heptageniidae (March Browns, Cahills, Quill Gordons)

» Genus Maccaffertium (March Browns and Cahills)

Species in Maccaffertium
Maccaffertium ithacaLight Cahill	0	0
Maccaffertium luteum	1	4
Maccaffertium mediopunctatumCream Cahill	5	34
Maccaffertium mexicanumCream Cahill	7	22
Maccaffertium modestumCream Cahill	6	19
Maccaffertium pulchellumLight Cahill	0	0
Maccaffertium terminatum	3	22
Maccaffertium vicariumMarch Brown	11	56

9 species aren't included.

Common Name

Match	Common Name
	March Browns and Cahills

Pictures Below ↓

This is page 3 of specimens of Maccaffertium. Visit the main Maccaffertium page for:

The behavior and habitat of Maccaffertium.
1 underwater picture of Maccaffertium.
2 streamside pictures of Maccaffertium.

57 Mayfly Specimens in the Genus Maccaffertium:

Specimen Page:1 234...7

Maccaffertium (March Browns and Cahills) Mayfly Dun

View 9 Pictures

Region: Catskills

Collected Sep 5, 2006

Added Oct 3, 2006

Maccaffertium vicarium (March Brown) Mayfly Spinner

View 5 PicturesThis spinner comes from a dun I collected and photographed earlier.

Region: Upper Midwest

Collected May 28, 2005

Added May 24, 2006

Maccaffertium (March Browns and Cahills) Mayfly Dun

View 6 PicturesI collected this male dun together with a female.

Region: Upper Midwest

Collected May 27, 2005

Added May 22, 2006

Maccaffertium vicarium (March Brown) Mayfly Dun

View 6 PicturesHere's a classic March Brown dun from the Catskills.

Region: Catskills

Collected May 20, 2007

Added May 21, 2007

Maccaffertium (March Browns and Cahills) Mayfly Nymph

View 5 Pictures

Region: Northeast

Collected Mar 29, 2005

Added Apr 7, 2006

Maccaffertium (March Browns and Cahills) Mayfly Dun

View 6 PicturesI collected this female dun together with a male. She's fairly damaged but at least you can see the colors.

Region: Upper Midwest

Collected May 27, 2005

Added May 22, 2006

Maccaffertium mexicanum (Cream Cahill) Mayfly Nymph

View 3 Pictures

Region: Upper Midwest

Collected Feb 7, 2004

Added Jan 25, 2006

Maccaffertium (March Browns and Cahills) Mayfly Nymph

View 5 Pictures

Region: Northeast

Collected Apr 14, 2007

Added Apr 22, 2007

Maccaffertium modestum (Cream Cahill) Mayfly Spinner

View 4 Pictures

Region: Upper Midwest

Collected Aug 5, 2004

Added Jan 25, 2006

Maccaffertium (March Browns and Cahills) Mayfly Spinner

View 6 PicturesThis one may look a bit strange, because one of her main wings came off in my container.

Region: Poconos

Collected May 28, 2007

Added Jun 4, 2007

Specimen Page:1 234...7

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Jargon Defined:

Dun: Mayflies have two adult stages. They first emerge from the water as duns (scientifically known as the subimago stage). They then molt into the spinner (imago) stage, in which they mate and die. Sometimes the word "dun" is confusingly used to refer to a brownish gray color in fly tying materials.

Spinner: There are two winged stages of adult mayflies. They emerge from the water as duns, molt on land (usually) into their fully mature stage, spinners. As spinners, they mate, lay eggs, and die.

Useful References:

Arbona, Fred Jr. 1989. Mayflies, the Angler, and the Trout. Nick Lyons Books.

Caucci, Al and Nastasi, Bob. 2004. Hatches II. The Lyons Press.

Fauceglia, Ted. 2005. Mayflies . Stackpole Books.

Knopp, Malcolm and Robert Cormier. 1997. Mayflies: An Angler's Study of Trout Water Ephemeroptera . The Lyons Press.