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TABLE 11-42 • <br />Number and Relative Abundance (by Order) of Benthic Animals <br />Captured With a Dip Net in the Uppermost Beaver Pond in Section 26 (Site P-2) <br /> May 1974 <br />Order Growth Relative <br /> l 2 <br />Family/Taxon Stage No . Abundance (~S) <br />Oligochaeta 30 8.2 <br />Tubificidae A 30 <br />Hirudinea 1 0.3 <br />Erpodbellidae/Unidentified genus A 1 <br />Gastropods 8 2.2 <br />Physi da a/Phyla sp. A 8 <br />Acari A 2/2 0.5 <br />Amphipoda 232 63.5 <br />Hyalellidae/Hyalella azteca A 215 <br />Cammaridae/Cammarus lactustris A 17 <br />Ephemeroptera 79 21.6 • <br />Baetida a/Callibaetis sp. N 52 <br />Baetis sp. N 27 <br />Odonata 2 0.5 <br />Coenag rionidae/Ischnura sp. N 2 <br />Hemipte ra 3 0.8 <br />Corixidae/Graptocorixa sp. A 1 <br />Unknown sp. A 1 <br />Notonectidae/Notonecta sp. A 1 <br />Tri choptera 3 0.8 <br />Limnephilidae/Unknown pupae L/P 3 <br />Coleoptera 2 0.5 <br />Dyti scidae/Unidentified genus L 1 <br />Haliplidae/Unidentified genus A 1 <br />Diptera 4 1,1 <br />Simulidae A 1 <br />Chi ronomidae A 3 <br />l~otal 366 100.0 • <br />1Crowth stages include: A - adult, N - nymph, L - larvae, and P - pupal. <br />Numbers on left indicate total per order; numbers on right indicate total per species. <br />