Cahills

Mayflies

Caddisflies

Stoneflies

Scientific Names

Match	Scientific Name
	Stenacron
	Stenacron interpunctatum
	Maccaffertium ithaca

Like most common names, "Cahill" can refer to more than one taxon. They're previewed below, along with 4 specimens. For more detail click through to the scientific names.

Mayfly Genus Stenacron

These are sometimes called Cahills.

The species in this genus were formerly classified in Stenonema. See the genus Maccaffertium for details. Only one species, Stenacron interpunctatum, is important to fly fishermen. See its page for details.

Stenacron interpunctatum (Light Cahill) Mayfly Nymph

View 7 Pictures

Collected June 5, 2005 from in
Added to Troutnut.com by on May 25, 2006

Male Stenacron (Light Cahills) Mayfly Dun

View 13 Pictures

Collected May 27, 2005 from in
Added to Troutnut.com by on May 22, 2006

Male Stenacron interpunctatum (Light Cahill) Mayfly Spinner

View 8 Pictures

Collected June 10, 2005 from in
Added to Troutnut.com by on May 26, 2006

See 5 more specimens...

Mayfly Species Stenacron interpunctatum

These are very rarely called Cahills.

This is the best of the sporadic summer hatches known to anglers as Light Cahills. It was formerly known as Stenonema canadense and is considered by most angling historians as the model for that classic Catskill pattern.

Stenacron interpunctatum (Light Cahill) Mayfly Nymph

View 7 Pictures

Collected June 5, 2005 from in
Added to Troutnut.com by on May 25, 2006

Female Stenacron interpunctatum (Light Cahill) Mayfly Dun

View 6 PicturesThis is a fairly small late-season female Stenacron dun.

Collected August 22, 2006 from in
Added to Troutnut.com by on August 23, 2006