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Stoneflies - Plecoptera: Capniidae of Gunnison County, Colorado

Capnia gracilaria
Slender Snowfly, Winter Stonefly

Claassen 1924
Updated 21 May 2016
TSN 102712

Locations Collected

South Fork Gunnison River Drainage about 7000 to 8400 feet elevation (Knight and Gaufin 1966).


Nelson and Baumann (1989) placed C. gracilaria in the Gracilaria Group. They noted C. gracilaria is "often the dominant capniid in streams of their range" and provide a species description on page 324.

Good Links

On this website:
Capniidae Introduction
Capnia Introduction

Other Websites:
Photos, Map, Museum specimens, DNA - Barcodinglife.org

Photos from the Web of Life
Adult or Nymph


Claassen,PW 1924 New species of North American Capniidae (Plecoptera). Canadian Entomologist 56, 43-48, 54-57. Type specimen

Knight,AW; Gaufin,AR 1966 Altitudinal distribution of stoneflies (Plecoptera) in a Rocky Mountain drainage system. Journal of the Kansas Entomological Society 39 4, 668-675.

Kondratieff,BC and Baumann,RW 2002 A review of the stoneflies of Colorado with description of a new species of Capnia (Plecoptera: Capniidae). Transactions of American Entomological Society 128 3, 385-401.
     Quote from page 388: " Capnia gracilaria is another common winter stonefly of streams and small river throughout the Mountain and Plateau regions of Colorado (Baumann et al 1977, Nelson and Baumann 1989)."

Needham,JG and Claassen,PW 1925 A Monograph of the Plecoptera of North America. Entomological Society of America, Lafayette, Indiana. 397 pages.

Nelson,RC; Baumann,RW 1989 Systematics and distribution of the winter stonefly genus Capnia (Plecoptera: Capniidae) in North America. Great Basin Naturalist 49, 289-363.

Brown,WS 2004 Stoneflies of Gunnison County, Colorado