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<br />AQUATIC INSECTS OF THE ARKANSAS RIVER BASIN IN COLORADO <br /> <br />DATE <br /> <br />June 28, 1974 <br /> <br />SAMPLE NO. 26 <br /> <br />COLLECTION SITE Upper Arkansas River, two curves in road, riffle <br />ORDER FAMILY GENUS SPECIES NO. INDIVIDUALS <br />Ephemeroptera Heptageniidae Rhi throgena doddsi 6 <br />Ephemeroptera Baetidae Baetis 8 <br />Ephemeroptera Ephemere11idae Ephemerel1a doddsi 2 <br />Ephemeroptera Ephemere11 idae Ephemere11a f1avil inea 1 <br />Ephemeroptera Heptageniidae Cinygma 4 <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br />