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C~ v ~ <br />TABLE A-IO <br />DENSITIES (N0./FTZ) AND PERCENT RELATIVE ABUNDANCES (%RA) OF BENTRIC tIACROINVERTEBRATES COLLECTED BY <br />SURBER SAPIPLER AT STATION 1 IN TIIE WILLIAPIS FORK RIVER NEAR CRAIG, COLORADO <br />NOVEPIBER 19, 1981 <br />Taxa Rep 1 Rep 2 Rep 3 Rep 4 Plean °,6RA S.D. <br /> <br />Gasiropoda <br />Physidae <br />Ph sa sp. 1 <br />Ephemerop[era <br />Baetidae <br />Baetis sp. 15 <br />Ephemerellidae <br />Ephemerella sp. 35 <br />Neptageniidae <br />~ Rithrogena sp. 12 <br />Lep[ophlebiidae <br />Paraleptophlebia sp. <br />Tricorythidae <br />Tricorythodes sp. 27 <br />Odonata <br />Gomphidae <br />O~hiogomphus severus <br />Plecoptera <br />Perlidae <br />Claassenia sabulosa <br />Periodidae <br />Isogenoides sp. <br />Isoperla sp. 6 <br />Taeniopterygidae <br />Taenionema sp. 19 <br />Trichoptera <br />Brachycentridae <br />Brachycentrus sp. 2 <br />79 <br />85 <br />38 <br />29 <br />2 <br />26 <br />20 <br />3 <br />23 <br />3 <br />l6 <br />2 <br />i <br />12 <br />17 <br />14 <br />33 <br />3 <br />2 <br />1 <br />21 <br />15 <br />4 <br />0.2 <br />33.5 <br />34.3 <br />24.7 <br />0.8 <br />15.0 <br />0.2 <br />0.2 <br />0.5 <br />13.5 <br />16.5 <br />2.3 <br />0.1 <br />10.2 <br />10.4 <br />7.5 <br />0.2 <br />4.6 <br />0.1 <br />0.1 <br />0.2 <br />4.1 <br />5.0 <br />0.7 <br />0.5 <br />30.5 <br />36.3 <br />12.7 <br />1.5 <br />15.0 <br />0.5 <br />0.5 <br />1.0 <br />11.9 <br />3.7 <br />1.7 <br />