Appendix C.  Combined Littoral Macroinvertebrate Taxa List
Lake Davis Sep-97 Oct-97 Jul-98 Sep-99 Overall
PHYLUM ARTHROPODA
Class Insecta
Coleoptera (Adults)
Dytiscidae
Hygrotus sp. d 6 1 7
Laccophilus sp. d 4 4
Haliplidae
Haliplus sp.  d 1 1 2
Hydrophilidae
Berosus sp. d 9 6 15
Coleoptera (Larvae)
Dytiscidae
Agabus sp. d   1 1
Hygrotus sp. d 12 4 16
Laccophilus sp. d 153 43 196
Sanfilippodytes sp. d 56 3 59
Undetermined n 8 2 10
Haliplidae
Haliplus sp. d 1 1 2
Peltodytes sp. d 2 2
Hydrophilidae
Berosus sp. d 46 5 51
Enochrus sp. d 13 1 14
Tropisternus sp. d 4   4
Diptera
Ceratopogonidae
Bezzia/ Palpomyia d 36 50 49 16 151
Ceratopogon sp. d 1 1 2
Dasyhelea sp. d 2 8 10
Forcipomyia sp. d 1   1
Chaoboridae
Chaoborus sp. d 150 7 13 170
Chironomidae
Chironominae
Chironomini d 240 623 922 130 1915
Tanytarsini d 205 322 682 605 1814
Orthocladiinae d 196 179 740 607 1722
Tanypodinae d 263 765 142 96 1266
Culicidae
Culex sp. d 1 1
Dixidae
Dixella sp. d 2 1 3
Dolichopodidae d 7 7
Hemiptera
Corixidae
Callicorixa sp. d 1 1
Cenocorixa sp. d 8 64 31 103
Hesperocorixa sp. d 8 277 22 307
Sigara sp. d 20 20
Undetermined n 6 382 48 436
Notonectidae
Notonecta sp. d 1 48 13 62
Undetermined n 2 2
Odonata
Aeshnidae d 2 2
Coenagrionidae n/d 98 528 626
Coenagrion/ Enallagma d 1 2 1 4
Undetermined n 280 296 576
Corduliidae d 13 57 70
Libellulidae d 6 6
Sympetrum sp. d 2 2
Undetermined d 24 24
Ephemeroptera
Baetidae
Callibaetis sp. d 327 2 187 3531 4047
Caenidae
Caenis sp. d 1787 2841 114 677 5419
Trichoptera
Hydroptilidae
Agraylea sp d 10 1 5 14 30
Leptoceridae
Mystacides sp. d 32 8   40
Oecetis sp. d 37 34 3 8 82
Triaenodes frontalis d 47 64 7 9 127
Undetermined n 6 1 2 1 10
Subphylum Chelicerata
Class Arachnoidea
Acari
Anisitiellidae d 1 1
Arrenuridae d 27 14 45 28 114
Hydrodromidae d 18 12 11 43 84
Hygrobatidae d 1 1 2
Limnessidae d 2 15 9 26
Limnocharidae d 3 3
Pionidae d 1 2 412 21 436
Unioncolidae d 3 3
Undetermined n 4 86 3 93
Subphylum Crustacea
Class Brachiopoda
Cladocera d 25 2 149 7 183
Class Copepoda d 537 25 950 290 1802
Class Malacostraca
Amphipoda
Hyalellidae
Hyalella azteca d 190 190
Hyalella sp. d 1096 32 240 1368
Class Ostracoda
Ostracoda
Cyprididae d 2138 1950 1029 295 5412
PHYLUM COELENTERATA
Class Hydrozoa
Hydroida
Hyridae
Hydra sp. d 16 2 2 20
PHYLUM MOLLUSCA
Class Gastropoda
Subclass Prosobranchia
Valvatidae
Valvata sp. d 127 72 11 51 261
Subclass Pulmonata
Lymnaeidae
Radix sp. d 1 1
Stagnicola sp. d 141 109 6 44 300
Undetermined n 129 21 98 218 466
Physidae
Physa/ Physella d 39 35 360 214 648
Planorbidae d 121 121
Gyraulus sp. d 3 54 57
Helisoma sp. d 17 47 64
Undetermined n/d 59 30 229 318
Class Bivalvia
Pelecypoda
Corbiculidae
Corbicula fluminea d 575 756 6 12 1349
PHYLUM NEMATODA d 2 2 21 25
PHYLUM PLATYHELMINTHES
Class Turbellaria
Tricladida
Planariidae d 19     19
PHYLUM ANNELIDA
Class Hirudinea d 1 1
Rhyncobdellida
Glossiphoniidae
Helobdella stagnalis  d 2 2
Helobdella sp.  d 7 7
    Class Oligochaeta d 143 317 475 89 1024
Total Organisms* 8658 8722 8297 8164 33841
Total Taxa 41 38 59 54 79 # All Taxa
non-determinate taxa 4 4 10 9 13 # Redundant or non-det Taxa
37 34 49 45 66 Final Taxa Count
  Redundant or non-determinant taxa
  Lost taxa
  New taxa (post-treatment)
  Top 5 most numerous taxa