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<br />. <br /> <br />. <br /> <br />. <br /> <br />DATE July 9, 1974 <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />AQUATIC INSECTS OF THE ARKANSAS RIVER BASIN IN COLORADO <br /> <br />FAMILY <br /> <br />GENUS <br /> <br />. <br /> <br />COLLECTION SITE Trinidad, Sewage Treatment Area, below discharge <br /> <br />ORDER <br />Oligochaete (class) <br />Di ptera <br />Ephemeroptera <br />Ephemeroptera <br /> <br />Tendipididae <br />Baetidae <br />Tricorythidae <br /> <br />Baetis <br />Tri corythodes <br /> <br />SPECIES <br /> <br />fa 11 ax <br /> <br />. <br /> <br />SAMPLE NO. 31 <br /> <br />. <br /> <br />NO. INDIVIDUALS <br /> <br />7 <br />3 <br />6 <br />2 <br /> <br />. <br /> <br />I-' <br />0") <br />,:::. <br />~., <br />