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<br />AQUATIC INSECTS OF THE ARKANSAS RIVER BASIN IN COLORADO <br /> <br />DATE <br /> <br />September 26, 1974 <br /> <br />COLLECTION SITE Portland Cement Company, below Florence <br />ORDER FAMILY GENUS SPECIES <br />Diptera Rhagionidae Atherix variegata <br />Odonata Gomphidae Ophiogomphus severus <br />Trichoptera Hydropsychidae Hydropsyche <br />Plecoptera Perlidae Acroneuria <br />Tri choptera Brachycentridae Brachycentrus <br />Ephemeroptera Tricorythidae Tricorythodus <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />SAMPLE NO. 82 <br /> <br />NO. INDIVIDUALS <br /> <br />1 <br />1 <br />9 <br />1 <br />1 <br />1 <br /> <br />. <br /> <br />. <br /> <br />. <br />