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<br />. <br /> <br />. <br /> <br />. <br /> <br />DATE July 10, 1974 <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />AQUATIC INSECTS OF THE ARKANSAS RIVER BASIN IN COLORADO <br /> <br />COLLECTION SITE Allen Mine, Purgatory River, above discharge <br /> <br />ORDER <br /> <br />Trichoptera <br />Tri choptera <br />Ephemeroptera <br />Ephemeroptera <br />Plecoptera <br />Col eoptera <br />Co 1 eoptera <br /> <br />FAMILY <br /> <br />GENUS <br /> <br />SPECIES <br /> <br />Hydropsychidae <br /> <br />Brachycentri dae <br /> <br />Ephemere 11 i dae <br /> <br />Heptegeniidae <br />Perlodidae <br /> <br />Dryopidae <br />Elmidae <br /> <br />Hydropsyche <br /> <br />Brachycentrus <br /> <br />Ephemere 11 a <br /> <br />Ci nygma <br /> <br />Isoperla <br />Helichus <br /> <br />Optioservus <br /> <br />inermis <br /> <br />. <br /> <br />SAMPLE NO. 33 <br /> <br />. <br /> <br />NO. INDIVIDUALS <br /> <br />19 <br />10 <br />5 <br />1 <br />1 <br />1 <br />1 <br /> <br />. <br /> <br />...... <br />en <br />~ <br />L:' <br />