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<br /> AQUATIC INSECTS OF THE ARKANSAS RIVER BASIN IN COLORADO <br />DATE August 7, 1974 SAMPLE NO. 66 <br />COLLECTION SITE Las Animas, below sewage treatment discharge <br />ORDER FAMILY GENUS SPECIES NO. INDIVIDUALS <br />Odonata Gornphidae Ophiogomphus severus 2 <br />Odonata Gomphidae Gomphus intricatus 3 <br />Diptera Tendipedidae 6 <br />Odonata Calopterygidae Hetaerina americana 1 <br />Odonata Coenargrionidae Argia ell1l1a 1 <br />Pulmonata Physidae Physa 1 <br />Coleoptera Dryopidae Helichus 1 <br />Ephemeroptera Heptageniidae Heptageni a robrouentris 1 <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br />