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1 <br />i <br />I <br />I <br />1 <br />I <br />I <br />J <br />I <br />1 <br />l <br />i <br />• <br />TABLE 1: Species List, mean density (numbers/m2) and diversity values of <br />benthic invertebrates from an unnamed tributary of Foidel Creek, <br />Routt County, Colorado, August 1980. <br />STATIONS <br />TAXA <br />INSECTA <br />Ephemeroptera (mayflies) <br />Baetis tricaudatus <br />Callibaetis <br />Trichoptera (caddisflies) <br />Cheumatopsyche <br />Limnephilus <br />Diptera (true flies) <br />Simulium arcticum <br />Palpomyia <br />Dixa <br />Chironomidae Form 1 <br />Chironomidae Form 5 <br />Chironomidae Form 7 <br />Chironomidae Form 8 <br />Chironomidae Form 9 <br />Chironomidae pupa <br />Coleoptera (beetles) <br />Haliplus <br />Hemiptera (true bugs) <br />Gerris <br />CRUSTACEA <br />Amphipoda (scuds) <br />Hyalella azteca <br />Gammarus lacustris <br />t•tOLLUSCA <br />Gastropoda (snails) <br />Phvsa <br />1* 2 3 1 2 3 <br />Riffle Pool <br /> <br /> <br />5 16 -- -- -- <br /> <br />91 16 -- -- -- <br />-- 113 -- -- -- <br /> <br />16 199 4831 22 86 <br /> <br />-- -- 151 -- -- <br />-- 5 430 -- -- <br />-- -- 280 -- -- <br /> <br /> <br />5 5 215 -- -- <br />59 -- -- 301 -- <br /> <br />-6- <br />