Insect Order Plecoptera (Stoneflies)

Mayflies Caddisflies Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Plecoptera (Stoneflies)

Family in Plecoptera
CapniidaeSnowflies	0	0
ChloroperlidaeSallflies	0	0
LeuctridaeNeedleflies	0	0
NemouridaeForestflies	0	0
PeltoperlidaeRoachflies	0	0
PerlidaeGolden Stones	0	0
PerlodidaeSpringflies and Yellow Stones	0	0
PteronarcyidaeSalmonflies	0	0
TaeniopterygidaeWillowflies	0	3

1 family

(Peltoperlidae)

isn't included.

Common Name

Match	Common Name
	Stoneflies

This is page 9 of specimens of Plecoptera. Visit the main Plecoptera page for:

• The behavior and habitat of Plecoptera.
• 6 underwater pictures of Plecoptera.

Pictures of 151 Stonefly Specimens:

Specimen Page:1...8910...16

Taeniopteryx (Early Black Stoneflies) Stonefly Nymph View 3 Pictures

Collected February 5, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Capniidae (Snowflies) Stonefly Nymph View 3 Pictures

Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Male Pteronarcys californica (Giant Salmonfly) Stonefly Adult View 1 PicturesThis shows the adult and its exuviae.

Collected May 1, 2007 from the Jocko River in Montana
Added to Troutnut.com by Bnewell on June 26, 2011

Male Malenka tina (Tiny Winter Black) Stonefly Adult View 7 PicturesThis is the smallest stonefly I've ever collected, with a body only 5.5 mm long.

Although not in-focus in my pictures, its first tarsal segment is similar in length to the third, while the second is much shorter. This helps with family-level identification.

Examining this specimen under a microscope shows a membranous lobe on the dorsal (Dorsal: Top.) base of the cerci (Cercus: The left and right "tails" of an insect are known as the cerci or caudal cerci. The middle tail of a three-tailed insect is not.), which is the key characteristic in Merritt & Cummins (4th ed.) to place the genus definitively as Malenka.

Following the species key in Jewett Jr's Stoneflies of the Pacific Northwest, the species appears to be Malenka tina. My dissecting microscope seems to show sternite (

One sternite of this Isonychia bicolor mayfly spinner is highlighted in red.

Sternite: The bottom (ventral) part of a single segment on an insect's abdomen.) 9 ending in a rounded knob, which distinguishes it from Malenka bifurcata, but the detail is hard to work out.

Also worth noting is that Montana appears to have this species, whereas birfucata is not know there: http://fieldguide.mt.gov/displaySpecies.aspx?family=Nemouridae

Collected July 1, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019

Female Isocapnia hyalita (Little Snowfly) Stonefly Adult View 1 Pictures

Collected April 21, 2012 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on April 26, 2012

Kathroperla perdita (Sallfly) Stonefly Adult View 1 Pictures

Collected May 9, 2005 from Teepee Creek in Montana
Added to Troutnut.com by Bnewell on July 3, 2011

Male Hesperoperla pacifica (Golden Stone) Stonefly Adult View 1 Pictures

Collected June 17, 2011 from the Grande Rhonde River in Washington
Added to Troutnut.com by Bnewell on June 26, 2011

Female Alloperla (Sallflies) Stonefly Adult View 7 PicturesThese little green stoneflies were the most common bug on a June day fishing the North Fork Couer d'Alene, although the trout never rose more than sporadically to them or anything else.

Collected June 25, 2019 from the North Fork Couer d'Alene River in Idaho
Added to Troutnut.com by Troutnut on July 17, 2019

Yoraperla brevis (Roachfly) Stonefly Adult View 1 Pictures

Collected June 14, 2005 from Station Creek in Montana
Added to Troutnut.com by Bnewell on June 28, 2011

Female Calineuria californica (Golden Stone) Stonefly Adult View 1 Pictures

Collected June 17, 2011 from the Grande Rhonde River in Washington
Added to Troutnut.com by Bnewell on June 26, 2011

Specimen Page:1...8910...16

Jargon Defined:

Cerci: The left and right "tails" of an insect are known as the cerci or caudal cerci. The middle tail of a three-tailed insect is not.

Dorsal: Top.

One sternite of this Isonychia bicolor mayfly spinner is highlighted in red.

Sternite: The bottom (ventral) part of a single segment on an insect's abdomen.

Useful References: