Stoneflies - Plecoptera: Perlodidae of Gunnison County, Colorado
Introduction to the Perlodid StonefliesKlapálek, 1909
Updated 28 Mar 2012
Provisional Species List
Good LinksKey to Perlodidae Nymphs
ReferencesBaumann,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 118: "The family Perlodidae is mainly characterized by short glossae on the labium which are reduced to small knobs fused to the sides of the paraglossae (fig. 2). The pointed paraglossae and the abscence of branched thoracic gills distinguish the Perlodidae from the family Perlidae. The family differs from the Chloroperlidae in the more depressed shape of the nymph (figs 16,17) and the state of the second anal vein of the forewing; its branches leaving the anal cell separately instead of together.
Three structural features of ancient origin, including the gills, the epiproct and a profusion of crossveins in the apical portion of the wing, have been retained by the more primative Perlodidae and lost in the more derived representatives. Although gradations in the character states appear within both subfamilies the Isoperlinae are generally considered more advanced than the Perlodinae."
Klapálek 1909 In Klapálek and Grunberg. Hft. 8. Ephemerida, Plecoptera, Lepidoptera. In Brauer, A. Die Süsswasserfauna Deutschlands. Eine Exkursionsfauna 39.
First description of the Perlodidae stonefly family.
Sandberg,JB and Stewart,KW 2005 Life History of the stonefly Isogenoides zionensis (Plecoptera: Perlodidae) from the San Miguel River, Colorado. Illiesia 1(4)21-32. http://www2.pms-lj.si/illiesia/Illiesia01-04.pdf
Quote from the introduction: "The Perlodidae is a large and important family of stoneflies in North American stream ecosystems. It contains 30 genera and 122 species in the two subfamiles Isoperlinae and Perlodinae, and is unique taxonomically, from the perspective that half of its genera are monospecific. In terms of species numbers, the Isoperlinae genus Isoperla has experienced the greatest radiation, with well more than 60 Neararctic species (Stark 2001, S.W. Szczytko, personal communication), and Isogenoides is the largest Nearctic Perlodinae genus with eight currently recognized species (revision by J.B. Sandburg and K.W. Stewart In Preparation)."
Brown,WS 2005 Plecoptera or Stoneflies of Gunnison County, Colorado, USA
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