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Plecoptera: Leuctridae of Gunnison County, Colorado

Perlomyia utahensis Utah Needlefly, Little Black Needlefly

Needham and Claassen 1925
Updated 6 January 2026

Good Links

On this website:
Leuctridae Introduction

Other Websites:
Photos, Map, Taxon Identifier Numbers - from the Global Biodiversity Information Facility Perlomyia utahensis at GBIF

Photos, Map, Museums, DNA - Barcode of Life Data System

Species details from plecoptera.species.file

Photos and more from Troutnut

References

Baumann,RW, Gaufin,AR and Surdick,RF 1977 The stoneflies (Plecoptera) of the Rocky Mountains. Memoirs of the American Entomological Society 31, 1-208. PDF
     Quote from page 104: "This species inhabitats creeks and small rivers but is most common in springs. Emergence occurs from April through July."

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




Nelson,CH and Hanson,JF 1973 The genus Perlomyia (Plecoptera: Leuctridae). Journal of the Kansas Entomological Society. 46: 187-199. Abstract

Stewart,KW and Ricker,WE 1997 The stoneflies of the Yukon. pgs 201-222 in Danks,HV and Downes,JA (Eds.), Insects of the Yukon. Biological Survey of Canada (Terrestrial Arthropods), Ottawa. 1034 pp.
     Quote from page 209 about the genus Perlomyia: "Western Nearctic; 2 species distributed from Alaska and Yukon south to California and New Mexico. Adults dark, 7-12mm, emerging March-June depending on elevation and latitude. Found primarily in springs or spring-fed small streams. Nymphal biology largely unknown."

Zuellig,RE; Heinold,BD; Kondratieff,BC and Ruiter,DE 2012 Diversity and Distribution of Mayflies (Ephemeroptera), Stoneflies (Plecoptera), and Caddisflies (Trichoptera) of the South Platte River Basin, Colorado, Nebraska, and Wyoming, 1873-2010. U.S. Geological Survey Data Series 606, 257 p. PDF - caution 46MB
     Quote from page 47: "A Western North American species that is uncommonly reported (Call and Baumann, 2002; Kondratieff and Baumann, 2002; Kondratieff and Lechleitner 2002). Baumann and others (1977) reported this species from springs, streams, and small rivers in the Rocky Mountains." The elevation range is 9,100-10,850 feet and the adults emerge in July.


Brown,WS 2009 Stoneflies (Plecoptera) of Gunnison County, Colorado, USA
www.gunnisoninsects.org