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<br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />1-'. <br />C'} <br />C') <br /> <br />. . <br />~., <br /> <br />AQUATIC INSECTS OF THE ARKANSAS RIVER BASIN IN COLORADO <br /> <br />DATE <br /> <br />August 15, 1974 <br /> <br />SAMPLE NO. 75 <br /> <br />COLLECTION SITE Westcliff, Grape Creek, GR-3, below sewage discharge <br /> <br />ORDER FAMILY GENUS SPECIES NO. I NO I V IDUALS <br />Diptera Simuliidae 7 <br />Di ptera Tendipedidae 4 <br />Tri choptera Hydropsychidae Hydropsyche 8 <br />Ephemeroptera Tri corythi dae Tricorythodes 17 <br />Ephemeroptera Heptageniidae Heptageni a elegantula 1 <br />Ephemeroptera Heptageni idae Heptagenia rubrouentris 1 <br />Ephemeroptera Leptophlebiidae Choroterpes 3 <br />Plecoptera (early instar) 2 <br />Coleoptera Elmidae Opti oservus 1 <br /> <br />,. <br />