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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 />..... <br />~ <br />w <br />(~ <br /> <br />AQUATIC INSECTS OF THE ARKANSAS RIVER BASIN IN COLORADO <br /> <br />DATE June 28. 1974 <br />COLLECTION SITE Upper Arkansas River. across from beer joint. riffle <br /> <br />SAMPLE NO. 27 <br /> <br />ORDER FAMILY GENUS SPECIES NO. INDIVIDUALS <br />P1ecoptera Per10didae Isoper1a 6 <br />Ephemeroptera Baeti dae Baetis 10 <br />Ephemeroptera Ephemere11idae Ephemere 11 a 4 <br />Ephemeroptera Heptageniidae Cinygmu1a 2 <br />Ephemeroptera Ephemere11idae Ephemere 11 a glacia1is carsona 2 <br />Ephemeroptera Heptageniidae Rhi throgeni a 1 <br />