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Stoneflies - Plecoptera: Perlodidae of Gunnison County, Colorado

Pictetiella expansa - Autumn Springfly

(Banks) 1920
Updated 6 Jan 2012
TSN 103188
On this website:
Key to Perlodidae Nymphs

Other Websites:
Map - Kondratieff, Boris C. and Richard W. Baumann (coordinators). 2000. Stoneflies of the United States. Jamestown, ND: Northern Prairie Wildlife Research Center Online. (Version 12DEC2003). http://www.npwrc.usgs.gov/resource/distr/insects/sfly/usa/515.htm

References

Banks,N 1920 New neuropteroid insects. Bulletin of the Museum of Comparative Zoology at Harvard College 64: 297-362.
     Described as Perla expansa.


Baumann,RW 1973 Studies on Utah stoneflies (Plecoptera) Western North American Naturalist 33(2) 91-108. PDF
     Abstract Fragment: "... The male, nymph, and egg of Pictetiella expansa (Banks) are described and an allotype female designated. ... Descriptions are either supported with original figures or reference is made to acceptable figures in the literature. Besides line drawings and halftones, useful photographic figures are provided which were prepared by using a scanning electron microscope."

Baumann,RW, Gaufin,AR and Surdick,RF 1977 The stoneflies (Plecoptera) of the Rocky Mountains. Memoirs of the American Entomological Society 31, 1-208.
     Quote from page 133: "This species is uncommon but quite distinctive in adult and mature nymphal stages. The adults emerge from July through October."

Dodds,GS; Hisaw,FL 1925 Ecological studies on aquatic insects. IV. Altitudinal range and zonation of mayflies, stoneflies and caddisflies in the Colorado Rockies. Ecology 6(4), 380-390.
     Found nymphs above 3000m.

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 the American Entomological Society 128 3, 385-401.
     Quote from page 397: " This species occurs in small to medium mountain streams. Most records are from high elevation streams in Gilpin, Grand and Larimer counties. Adults emerge from August to October but are rarely collected."

Illustrations


Mesosternal Y-arms.
Only visible easily on mature nymphs.

"The only people with whom you should try to get even are those who have helped you. " - John E. Southard
Brown, Wendy S. 2004 Plecoptera or Stoneflies of Gunnison County, Colorado
www.gunnisoninsects.org