| Caecidotea communis (Asellus communis) | Larva - larva | Schwiebert p.140 |
| Caenis | Imago - dun | Arbona p. 121 fig. 11-8 |
| Caenis | Larva - nymph | Caucci p. 148 |
| Caenis | Larva - gill | Caucci p. 133 |
| Caenis | Larva - abdomen dorsal | McCafferty p. 121 fig. 07.62 |
| Caenis | Larva - fore wing | Knopp p. 286 |
| Caenis | Imago - fore wing | Caucci p. 133 C |
| Caenis | Pupa - gill 4 | Merritt p. 133 fig. 11.15b |
| Caenis | Larva - head dorsal | Bouchard p. 50 fig. 4.9 |
| Caenis | Larva - head & thorax dorsal | Merritt p. 133 fig. 11.17 |
| Caenis | Imago - fore wing | McCafferty p. 121 fig. 07.63 |
| Caenis | Larva - gill 2 | Merritt p. 133 fig. 11.15a |
| Caenis | Larva - dorsal view | Bouchard p. 57 fig. 4.44 |
| Caenis | Larva - abdomen dorsal | Bouchard p. 52 fig. 4.22 |
| Caenis | Imago - pronotum ventral | Merritt p. 155 fig. 11.163 |
| Caenis | Larva - operculate gill | Bouchard p. 52 fig. 4.16 |
| Caenis amica | Imago - male genitalia | Needham p. 647 g |
| Caenis amica | Larva - nymph | Knopp p. 286 |
| Caenis amica | Larva - nymph | Schwiebert p.310a-29 |
| Caenis amica (Caenis simulans) | Imago - fore wing | Leonard p. 40 fig. 22 |
| Caenis amica (Caenis simulans) | Larva - nymph | Swisher p. 175 |
| Caenis amica (Caenis simulans) | Larva - nymph | Arbona p. 119 fig. 11-6 |
| Caenis amica (Caenis simulans) | Larva - larva | McCafferty p. CP IV fig. 022 |
| Caenis amica (Caenis simulans) | Imago - male subimago | McCafferty p. CP IV fig. 021 |
| Caenis amica (Caenis simulans) | Imago - genitalia | Leonard p. 125 fig. 75 |
| Caenis amica (Caenis simulans) | Imago - genitalia | Arbona p. 175 fig. 2 |
| Caenis diminuta diminuta (Caenis diminuta) | Imago - male dorsal view | Berner - p. 338 plate 21 |
| Caenis diminuta diminuta (Caenis diminuta) | Imago - male genitalia | Berner - p. 70 fig. 78 |
| Caenis diminuta diminuta (Caenis diminuta) | Imago - male genitalia | Needham p. 647 c |
| Caenis diminuta diminuta (Caenis diminuta) | Imago - wing, male | Berner - p. 56 fig. 5 |
| Caenis diminuta diminuta (Caenis diminuta) | Larva - nymph | Schwiebert p.310a-28 |
| Caenis diminuta diminuta (Caenis diminuta) | Larva - maxilla | Berner - p. 74 fig. 107 |
| Caenis diminuta diminuta (Caenis diminuta) | Larva - dorsal view | Berner - p. 340 plate 22 |
| Caenis hilaris | Imago - wing | Needham p. 123 fig. 31 B |
| Caenis hilaris | Imago - male genitalia | Needham p. 647 b |
| Caenis hilaris | Imago - fore wing | Caucci p. 148 |
| Caenis hilaris | Egg | Needham p. 80 fig. 32 |
| Caenis latipennis | Larva - nymph | Schwiebert p.310a-27 |
| Caenis latipennis | Imago - male genitalia | Needham p. 647 d |
| Caenis latipennis (Caenis forcipata) | Imago - genitalia | Leonard p. 125 fig. 75 |
| Caenis latipennis (Caenis forcipata) | Imago - male genitalia | Needham p. 647 f |
| Caenis latipennis (Caenis jocosa) | Imago - male genitalia | Needham p. 647 a |
| Caenis perpusilla | Egg | Needham p. 80 fig. 34 |
| Caenis punctata | Imago - male genitalia | Needham p. 647 e |
| Calacanthia | Imago - right hemelytron | Merritt p. 286 fig. 15.120 |
| Calamoceratidae | Larva - labrum dorsal | McCafferty p. 269 fig. 14.85 |
| Calamoceratidae | Imago - head & throax | McCafferty p. 269 fig. 14.86 |
| Calineuria californica (Acroneuria californica) | Larva - nymph | Schwiebert p. 54b fig. 1 |
| Callibaetis | Larva - right maxilla | Merritt p. 134 fig. 11.32 |
| Callibaetis | Larva - 2nd gill | Berner - p. 76 fig. 117 |
| Callibaetis | Larva - gill 2 | Merritt p. 137 fig. 11.50 |
| Callibaetis | Imago - female spinner | Caucci p. 256+ CP XX e |
| Callibaetis | Imago - fore wing | McClane p. 607 |
| Callibaetis | Imago - hind wing | Arbona p. 169 fig. 135b |
| Callibaetis | Larva - gill | Caucci p. 266 B |
| Callibaetis | Larva - nymph | Arbona p. 049 fig. 5-1 |
| Callibaetis | Larva - nymph | Knopp p. 069 |
| Callibaetis | Subimago - dun | Knopp p. 174 Plate 3b |
| Callibaetis | Subimago - female dun | Caucci p. 256+ CP XX f |
| Callibaetis | Imago - fore wing | Knopp p. 071 |
| Callibaetis californicus | Imago - fore & hind wing | Needham p. 658 a |
| Callibaetis ferrugineus hageni (Callibaetis americanus) | Larva - nymph | Schwiebert p.310a-6 |
| Callibaetis ferrugineus hageni (Callibaetis coloradensis) | Larva - nymph | Swisher p. 156 |
| Callibaetis ferrugineus hageni (Callibaetis coloradensis) | Subimago - male dun | Swisher p. 122-CP-4a |
| Callibaetis ferrugineus hageni (Callibaetis coloradensis) | Larva - nymph | Schwiebert p.310a-1 |
| Callibaetis ferrugineus hageni (Callibaetis ferrugineus) | Larva - nymph | Schwiebert p.310a-4 |
| Callibaetis ferrugineus hageni (Callibaetis ferrunineus) | Imago - genitalia | Leonard p. 128 fig. 78 |
| Callibaetis ferrugineus hageni (Callibaetis nigritus) | Larva - nymph | Schwiebert p.310a-7 |
| Callibaetis ferrugineus hageni (Callibaetis nigritus) | Imago - female spinner | Swisher p. 122-CP-7a |
| Callibaetis ferrugineus hageni (Callibaetis nigritus) | Imago - genitalia | Arbona p. 179 fig. 83 |
| Callibaetis floridanus | Larva - maxilla | Berner - p. 74 fig. 104 |
| Callibaetis floridanus | Larva - dorsal view | Berner - p. 124 plate 3 |
| Callibaetis floridanus | Larva - 7th gill | Berner - p. 76 fig. 119 |
| Callibaetis floridanus | Imago - fore wing, female | Berner - p. 56 fig. 9 |
| Callibaetis fluctuans | Larva - nymph | Schwiebert p.310a-2 |
| Callibaetis fluctuans | Larva - larva | McCafferty p. 103 fig. 07.13 |
| Callibaetis fluctuans | Larva - dorsal | Needham p. 658 c |
| Callibaetis fluctuans | Imago - male head face view | Needham p. 109 fig. 16a |
| Callibaetis fluctuans | Subimago - male dorsal | Needham p. 658 d |
| Callibaetis pallidus | Larva - nymph | Schwiebert p.310a-5 |
| Callibaetis pictus (Callibaetis pacificus) | Larva - nymph | Schwiebert p.310a-3 |
| Callibaetis pictus (Callibaetis pacificus) | Imago - female imago | McCafferty p. CP I fig. 004 |
| Callibaetis pictus (Callibaetis pacificus) | Imago - fore & hind wing | Needham p. 658 b |
| Callibaetis pretiosus | Larva - maxilla | Berner - p. 74 fig. 103 |
| Callibaetis pretiosus | Imago - hind wing, female | Berner - p. 60 fig. 27 |
| Callibaetis pretiosus | Imago - male lateral view | Berner - p. 135 plate 4 |
| Callibaetis pretiosus | Larva - 7th gill | Berner - p. 76 fig. 118 |
| Callibaetis pretiosus | Imago - fore wing, female | Berner - p. 56 fig. 8 |
| Callibaetis skokianus | Imago - hind wing | Needham p. 121 D |
| Callicorixa | Imago - male foreleg | Merritt p. 277 fig. 15.52 |
| Callicorixa | Imago - tarsus posterior | Merritt p. 277 fig. 15.53 |
| Callicorixa audeni | Imago - left hemelytron | Merritt p. 279 fig. 15.59 |
| Callicorixa vulnerata | Imago - dorsal view | Merritt p. 277 fig. 15.40 |
| Calliperla luctuosa | Larva - mesosternum ventral | Merritt p. 236 fig. 14.87 |
| Calopterygidae | Larva - caudal lamellae | McCafferty p. 132 fig. 08.05 |
| Calopterygidae | Larva - head | McCafferty p. 132 fig. 08.03 |
| Calopterygidae | Larva - labium | McCafferty p. 132 fig. 08.04 |
| Calopteryx | Larva - head dorsal | Bouchard p. 67 fig. 5.09 |
| Calopteryx | Larva - dorsal view | Bouchard p. 41 fig. 3.15 |
| Calopteryx aequabilis (Calopteryx yakima) | Larva - larva | Schwiebert p.150b-3 |
| Calopteryx maculata | Larva - dorsal view | Bouchard p. 40 fig. 3.6 |
| Calopteryx maculata (Agrion maculatum) | Larva - nymph | Schwiebert p.150b-1 |
| Cambaridae | Ametabolous - dorsal view | Bouchard p. 16 fig. 2.29 |
| Camelobaetidius | Larva - leg | Merritt p. 137 fig. 11.42a |
| Camelobaetidius | Larva - claw | Merritt p. 137 fig. 11.42b |
| Campsurus decoloratus | Imago - male genitalia | Needham p. 286 b |
| Capnia | Imago - fore wing | Merritt p. 240 fig. 14.106 |
| Capnia | Larva - thorax & abdomen | McCafferty p. 156 fig. 09.11 |
| Capnia vernalis | Larva - nymph | Schwiebert p. 86a-1 |
| Capnia vernalis | Larva - larva | McCafferty p. CP VII fig. 038 |
| Capnia vernalis | Larva - abdominal terga | Merritt p. 229 fig. 14.35 |
| Capnia vernalis | Imago - adult | McCafferty p. CP VII fig. 039 |
| Capnia vernaliss | Larva - wing pads | Merritt p. 229 fig. 14.38 |
| Caraphtactis cinctus (Caraphractus cinctus) | Imago - adult | McCafferty p. 376 fig. 20.03 |
| Carrhydrus | Imago - labial palp | Merritt p. 424 fig. 20.092 |
| Cascadoperla trictura | Larva - right lacinia ventral | Merritt p. 236 fig. 14.86 |
| Caudatella heterocaudata heterocaudata (Caudatella heterocaudata) | Larva - abdomen | Arbona p. 160 fig. 112a |
| Caudatella heterocaudata heterocaudata (Caudatella heterocaudata) | Larva - nymph | Arbona p. 160 fig. 112 |
| Caudatella heterocaudata heterocaudata (Ephemerella heterocaudata) | Imago - male genitalia | Needham p. 612 c |
| Caudatella heterocaudata heterocaudata (Ephemerella heterocaudata) | Imago - genitalia | Arbona p. 175 fig. 32 |
| Caudatella hystrix | Larva - nymph | Knopp p. 258 |
| Caudatella hystrix | Larva - nymph | Arbona p. 160 fig. 113 |
| Caudatella hystrix | Larva - abdomen | Knopp p. 258 |
| Caudatella hystrix | Larva - abdomen | Arbona p. 160 fig. 113a |
| Caudatella hystrix (Ephemerella hystrix) | Larva - abdomen lateral | Needham p. 186 fig. 53 b |
| Caurinella | Larva - apex of abdomen | Merritt p. 142 fig. 11.93 |
| Celina | Larva - apex of abdomen | Merritt p. 420 fig. 20.069 |
| Cenocorixa | Imago - male foreleg | Merritt p. 274 fig. 15.22 |
| Cenocorixa | Imago - male foreleg | Merritt p. 277 fig. 15.51 |
| Cenocorixa kuiterti | Imago - dorsal view | Merritt p. 277 fig. 15.41 |
| Centrocorisa | Imago - male foreleg | Merritt p. 276 fig. 15.37 |
| Centrocorisa | Imago - abdominal tergites | Merritt p. 276 fig. 15.38 |
| Centroptilum | Imago - genitalia ventral (male) | Merritt p. 155 fig. 11.169 |
| Centroptilum | Larva - gill 4 | Merritt p. 137 fig. 11.48 |
| Centroptilum | Larva - labial palpus | Merritt p. 137 fig. 11.46 |
| Centroptilum | Imago - hind wing | Arbona p. 169 fig. 135d |
| Centroptilum | Imago - hind wing | Caucci p. 268 |
| Centroptilum | Larva - nymph | Arbona p. 049 fig. 5-2 |
| Centroptilum | Larva - nymph | Knopp p. 075 |
| Centroptilum alamance (Neocloeon alamance) | Larva - 7 | Needham p. 732 fig. 17 |
| Centroptilum alamance (Neocloeon alamance) | Larva - gill 5 | Needham p. 732 fig. 16 |
| Centroptilum alamance (Neocloeon alamance) | Larva - gill 2 | Needham p. 732 fig. 14 |
| Centroptilum alamance (Neocloeon alamance) | Larva - labium | Needham p. 732 fig. 9 |
| Centroptilum alamance (Neocloeon alamance) | Larva - labrum | Needham p. 732 fig. 3 |
| Centroptilum alamance (Neocloeon alamance) | Larva - left mandible | Needham p. 732 fig. 11 |
| Centroptilum alamance (Neocloeon alamance) | Larva - nymph | Schwiebert p.182b-6 |
| Centroptilum alamance (Neocloeon alamance) | Larva - right mandible | Needham p. 732 fig. 2 |
| Centroptilum alamance (Neocloeon alamance) | Larva - dorsal | Needham p. 732 fig. 1 |
| Centroptilum alamance (Neocloeon alamance) | Larva - right maxilla | Needham p. 732 fig. 5 |
| Centroptilum alamance (Neocloeon alamance) | Larva - canines of mandible | Needham p. 732 fig. 6 |
| Centroptilum alamance (Neocloeon alamance) | Larva - hypopharnyx | Needham p. 732 fig. 4 |
| Centroptilum alamance (Neocloeon alamance) | Larva - gill 4 | Needham p. 732 fig. 15 |
| Centroptilum alamance (Neocloeon alamance) | Larva - gill 1 | Needham p. 732 fig. 13 |
| Centroptilum alamance (Neocloeon alamance) | Imago - male genitalia | Needham p. 721 a |
| Centroptilum alamance (Neocloeon alamance) | Imago - male genitalia | Needham p. 732 fig. 10 |
| Centroptilum alamance (Neocloeon alamance) | Imago - head of male | Needham p. 732 fig. 8 |
| Centroptilum alamance (Neocloeon alamance) | Imago - subanal plate of imago | Needham p. 732 fig. 7 |
| Centroptilum alamance (Neocloeon alamance) | Larva - canines of mandible | Needham p. 732 fig. 12 |
| Centroptilum alamance (Neocloeon alamance) | Imago - fore wing | Needham p. 732 fig. 18 |
| Centroptilum album (Centroptilum convexum) | Larva - nymph | Schwiebert p.310a-18 |
| Centroptilum album (Centroptilum convexum) | Imago - hind wing | Needham p. 709 b |
| Centroptilum album (Centroptilum convexum) | Imago - hind wing | Arbona p. 179 fig. 81 |
| Centroptilum album (Centroptilum convexum) | Imago - fore wing | Leonard p. 84 fig. 50 |
| Centroptilum album (Centroptilum walshi) | Larva - nymph | Schwiebert p.310a-17 |
| Centroptilum asperatum | Larva - nymph | Schwiebert p.310a-22 |
| Centroptilum asperatum | Imago - male genitalia | Needham p. 710 c |
| Centroptilum asperatum | Imago - hind wing | Needham p. 709 g |
| Centroptilum asperatum | Imago - genitalia | Arbona p. 179 fig. 77 |
| Centroptilum asperatum (Centroptilum elsa) | Imago - genitalia | Arbona p. 179 fig. 77 |
| Centroptilum asperatum (Centroptilum elsa) | Larva - nymph | Schwiebert p.310a-16 |
| Centroptilum asperatum (Centroptilum elsa) | Imago - male genitalia | Needham p. 710 h |
| Centroptilum asperatum (Centroptilum elsa) | Imago - hind wing | Arbona p. 179 fig. 78 |
| Centroptilum asperatum (Centroptilum elsa) | Imago - hind wing | Needham p. 709 i |
| Centroptilum bifurcatum | Larva - abdomen | Arbona p. 157 fig. 60 |
| Centroptilum bifurcatum | Imago - male genitalia | Needham p. 710 i |
| Centroptilum bifurcatum | Imago - hind wing | Needham p. 709 j |
| Centroptilum bifurcatum | Imago - hind wing | Arbona p. 179 fig. 79 |
| Centroptilum bifurcatum (Centroptilum selanderorum) | Imago - hind wing | Arbona p. 179 fig. 80 |
| Centroptilum conturbatum | Imago - male genitalia | Needham p. 710 b |
| Centroptilum conturbatum | Imago - hind wing | Needham p. 709 h |
| Ceraclea | Larva - case | McCafferty p. 270 fig. 14.89 |
| Ceraclea | Larva - head & thorax dorsal view | Bouchard p. 123 fig. 10.30 |
| Ceraclea | Larva - detail of antenna | Merritt p. 320 fig. 17.44 |
| Ceraclea | Larva - case & sponges | LaFontaine p. 254 - c |
| Ceraclea | larva - case | Pobst - p. 80-b |
| Ceraclea | Larva - case | LaFontaine p. 254 - a |
| Ceraclea | Larva - abdomen dorsal | Merritt p. 364 fig. 18.112 |
| Ceraclea | Adult - lateral | Pobst - p. 80-a |
| Ceraclea | Imago - lateral view | LaFontaine p. 254 - b |
| Ceraclea maculata | Larva - head dorsal, left mandible | Merritt p. 364 fig. 18.111 |
| Ceraclea resurgens | Imago - lateral view | LaFontaine p. 123 - b |
| Ceratopogonidae | Imago - wing | McCafferty p. 308 fig. 16.45 |
| Ceratopogoninae | Larva - abdomen posterior | McCafferty p. 308 fig. 16.43 |
| Ceratopsyche | Pupa - temporary case | Pobst - p. 63-a |
| Ceratopsyche | larva - lateral | Pobst - p. 60-b |
| Ceratopsyche | Adult - lateral | Pobst - p. 60-a |
| Ceratopsyche alternans (Hydropsyche alternans) | Pupa - pupa | Schwiebert p. 86b-10 |
| Ceratopsyche bronta (Hydropsyche bronta) | Imago - lateral view | LaFontaine p. 123 - c |
| Ceratopsyche cockerelli | Adult - lateral | Pobst - p. 26-a |
| Ceratopsyche morosa (Hydropsyche bifida) | Larva - larva | Schwiebert p. 118a-8 |
| Ceratopsyche morosa (Hydropsyche morosa) | Imago - lateral view | LaFontaine p. 64 CP III - f |
| Ceratopsyche slossonae (Symphitopsyche slossonae) | Pupa - pupa | McCafferty p. CP XII fig. 079 |
| Ceratopsyche slossonae (Symphitopsyche slossonae) | Larva - larva | McCafferty p. CP XII fig. 078 |
| Ceratopsyche slossonae (Symphitopsyche slossonae) | Imago - adult | McCafferty p. CP XII fig. 080 |
| Ceratopsyche ventura | Larva - ab8 tertum setation detail | Merritt p. 360 fig. 18.69 |
| Cercyon | Larva - larva | McCafferty p. 347 fig. 17.10 |
| Cernotina spicata | Larva - anal proleg & claw lateral | Merritt p. 381 fig. 18.246 |
| Cernotina spicata | Larva - fore leg beyond coxa lateral | Merritt p. 381 fig. 18.241 |
| Chaetarthria (Chaetarthriinae) | Imago - abdomen posterior ventral | McCafferty p. 223 fig. 13.33 |
| Chaoboridae | Pupa - respiratory horn | McCafferty p. 304 fig. 16.31 |
| Chaoboridae | Pupa - respiratory horn | McCafferty p. 304 fig. 16.32 |
| Chaoborus | Larva - larva | McCafferty p. 304 fig. 16.28 |
| Chaoborus | Larva - lateral view | Bouchard p. 175 fig. 13.71 |
| Chaoborus punctipennis | Larva - head lateral | Bouchard p. 167 fig. 13.32 |
| Chauliodes | Larva - abdomen posteolateral | McCafferty p. 193 fig. 11.03 |
| Chauliodes | Imago - fore & hind wings | Merritt p. 305 fig. 16.35 |
| Chauliodes | Larva - segment VIII dorsal | Merritt p. 302 fig. 16.18 |
| Chauliodes | Larva - larva | Schwiebert p.144 |
| Chauliodes pectinicornis | Imago - adult | McCafferty p. CP XI fig. 073 |
| Chauliodes pectinicornis | Ova - egg | Merritt p. 302 fig. 16.14 |
| Chauliodes pectinicornis | Larva - larva | McCafferty p. CP XI fig. 072 |
| Chelifera | Larva - abdomen dorsolateral | McCafferty p. 320 fig. 16.72 |
| Chelifera | Larva - abdomen dorsolateral | McCafferty p. 320 fig. 16.73 |
| Chelifera | Larva - larva | McCafferty p. CP XVI fig. 118 |
| Chernokris misnomus | Larva - mesosternum ventral | Merritt p. 238 fig. 14.96 |
| Chersodromia parallela | Imago - adult | McCafferty p. 353 fig. 17.17 |
| Cheumatopsyche | Larva - head dorsal | Merritt p. 358 fig. 18.65 |
| Cheumatopsyche | Adult - lateral | Ames - p. 166 |
| Cheumatopsyche | Larva - case | LaFontaine p. 233 - a |
| Cheumatopsyche | Adult - lateral | Pobst - p. 64-a |
| Cheumatopsyche | larva - lateral | Pobst - p. 30-b |
| Cheumatopsyche | larva - lateral | Pobst - p. 65-a |
| Cheumatopsyche | Larva - left fore leg trochantin lateral | Merritt p. 357 fig. 18.50 |
| Cheumatopsyche | Larva - prosternum ventral view | Merritt p. 360 fig. 18.67 |
| Cheumatopsyche | Pupa - case | Pobst - p. 31-c |
| Cheumatopsyche | Pupa - temporary case | Pobst - p. 65-b |
| Cheumatopsyche | Larva - right mandible dorsal | Merritt p. 357 fig. 18.52 |
| Cheumatopsyche | Imago - lateral view | LaFontaine p. 233 - b |
| Cheumatopsyche | Larva - ab9 ventral view | Merritt p. 360 fig. 18.72 |
| Cheumatopsyche gracilis (Cheumatopsyche gracilus) | Pupa - pupa | Schwiebert p. 86b-15 |
| Cheumatopsyche lasia | Adult - lateral | Pobst - p. 30-a |
| Cheumatopsyche lasia | Adult - lateral | Pobst - p. 30-a |
| Cheumatopsyche pettiti (Cheumatopsyche peltiti) | Larva - lateral view | Bouchard p. 120 fig. 10.12 |
| Chiloxanthus | Imago - right hemelytron | Merritt p. 287 fig. 15.127 |
| Chimarra | Larva - lateral view | Bouchard p. 132 fig. 10.58 |
| Chimarra | Larva - head ventral | Merritt p. 378 fig. 18.218 |
| Chimarra | Imago - lateral view | LaFontaine p. 290 - b |
| Chimarra | Pupa - pupa | McCafferty p. 246 fig. 14.07 |
| Chimarra | Imago - lateral view | LaFontaine p. 290 - c |
| Chimarra | Larva - anal prolegs | Merritt p. 321 fig. 17.53 |
| Chimarra | Larva - anal prolegs dorsal | Bouchard p. 121 fig. 10.17 |
| Chimarra | Larva - foretrochantin & prothoracic coxa | Merritt p. 379 fig. 18.221 |
| Chimarra | Larva - head & thor. seg 1 dorsal | Bouchard p. 121 fig. 10.19 |
| Chimarra | Larva - head dorsal | Merritt p. 378 fig. 18.219 |
| Chimarra angustipennis (Chimarrha augustipennis) | Larva - larva | Schwiebert p. 118a-18 |
| Chimarra angustipennis (Chimarrha augustipennis) | Pupa - pupa | Schwiebert p. 118a-19 |
| Chimarra aterrima | Imago - lateral view | LaFontaine p. 123 - a |
| Chimarra aterrima (Chimarra atterrima) | Larva - larva | McCafferty p. 246 fig. 14.03 |
| Chimarra aterrima (Chimarrha atterima) | Pupa - pupa | Schwiebert p. 118a-11 |
| Chimarra aterrima (Chimarrha atterima) | Larva - larva | Schwiebert p. 118a-10 |
| Chimarrinae | Larva - head | McCafferty p. 246 fig. 14.05 |
| Chironominae | Larva - head ventral | McCafferty p. 313 fig. 16.53 |
| Chironomus | Pupa - pupa | Schwiebert p.113-2 |
| Chironomus | Pupa - pupa | McCafferty p. 313 fig. 16.55 |
| Chironomus | Larva - larva | Schwiebert p.113-1 |
| Chironomus attenuatus | Larva - larva | McCafferty p. CP XV fig. 108 |
| Chironomus attenuatus | Larva - larva | McCafferty p. CP XV fig. 107 |
| Chironomus tentans | Larva - lateral view | Bouchard p. 14 fig. 2.18 |
| Chlaenius | Larva - dorsal view | Merritt p. 404 fig. 20.001 |
| Chlaenius | Imago - dorsal view | Merritt p. 409 fig. 20.034d |
| Choroterpes | Larva - gill 1 | Merritt p. 134 fig. 11.28a |
| Choroterpes | Larva - gill | Bouchard p. 54 fig. 4.29d |
| Choroterpes | Larva - gill 4 | Merritt p. 134 fig. 11.28b |
| Choroterpes | Imago - hind wing | McClane p. 611 |
| Choroterpes basalis | Egg | Needham p. 80 fig. 26 |
| Choroterpes basalis | Imago - male genitalia | Needham p. 543 a |
| Choroterpes basalis | Imago - fore & hind wing | Needham p. 540 |
| Choroterpes basalis (Choroterpes hubbelli) | Larva - dorsal view | Berner - p. 223 plate 10 |
| Choroterpes basalis (Choroterpes hubbelli) | Larva - 3rd gill | Berner - p. 76 fig. 133 |
| Choroterpes basalis (Choroterpes hubbelli) | Imago - male genitalia | Berner - p. 68 fig. 61 |
| Choroterpes basalis (Choroterpes hubbelli) | Imago - hind wing, male | Berner - p. 60 fig. 42 |
| Choroterpes basalis (Choroterpes hubbelli) | Imago - fore wing, male | Berner - p. 58 fig. 18 |
| Choroterpes terratoma | Imago - male genitalia | Needham p. 543 b |
| Chrysogaster | Larva - abdomen posterior | McCafferty p. 322 fig. 16.82 |
| Chrysops | Larva - abdomen cross section | McCafferty p. 317 fig. 16.66 |
| Chrysops | Larva - larva | McCafferty p. 317 fig. 16.65 |
| Chrysops | Imago - head lateral | McCafferty p. 317 fig. 16.68 |
| Chrysops montanus | Imago - adult | McCafferty p. CP XVI fig. 116 |
| Chyrandra (Chyranda) | Larva - case | LaFontaine p. 265 - a |
| Chyrandra (Chyranda) | Imago - lateral view | LaFontaine p. 265 - b |
| Chyrandra centralis | Larva - case | Merritt p. 370 fig. 18.161 |
| Chyrandra centralis | Larva - ab1 lateral | Merritt p. 369 fig. 18.149 |
| Chyrandra centralis (Chyranda centralis) | Larva - cases | LaFontaine p. 262 - 2a |
| Cinygma | Larva - gills 1 & 2 | Merritt p. 138 fig. 11.60 |
| Cinygma | Imago - forewing upper area | McClane p. 609 |
| Cinygma dimicki | Imago - male genitalia | Needham p. 367 b |
| Cinygma dimicki | Imago - male genitalia | Needham p. 367 d |
| Cinygma integrum | Imago - male genitalia | Needham p. 367 c |
| Cinygma lyriforme (Cinygma lyriformis) | Imago - male genitalia | Needham p. 367 a |
| Cinygmula | Larva - gill 4 | Merritt p. 138 fig. 11.55 |
| Cinygmula | Imago - penes | Merritt p. 151 fig. 11.140 |
| Cinygmula | Larva - head dorsal | Merritt p. 138 fig. 11.54 |
| Cinygmula | Larva - nymph | Caucci p. 256+ CP XIV e |
| Cinygmula | Larva - nymph | Arbona p. 060 fig. 6-4 |
| Cinygmula gartrelli | Imago - male genitalia | Needham p. 386 a |
| Cinygmula mimus | Larva - nymph | Schwiebert p. 278 color plate |
| Cinygmula mimus | Larva - gill | Arbona p. 160 fig. 102 |
| Cinygmula mimus (Cinygmula minus) | Larva - nymph | Schwiebert p.278a-5 |
| Cinygmula par | Imago - male genitalia | Needham p. 386 c |
| Cinygmula par (Cinygmula confusa) | Imago - male genitalia | Needham p. 386 h |
| Cinygmula par (Cinygmula hyalina) | Imago - male genitalia | Needham p. 386 i |
| Cinygmula ramaleyi | Larva - nymph | Arbona p. 072 fig. 6-19 |
| Cinygmula ramaleyi | Larva - nymph | Schwiebert p.278a-10 |
| Cinygmula ramaleyi | Larva - nymph | Knopp p. 171 |
| Cinygmula ramaleyi | Larva - gill | Arbona p. 160 fig. 103 |
| Cinygmula ramaleyi | Imago - male genitalia | Needham p. 386 f |
| Cinygmula ramaleyi | Imago - genitalia | Arbona p. 177 fig. 59 |
| Cinygmula ramaleyi | Larva - nymph | Schwiebert p. 278 color plate |
| Cinygmula reticulata | Imago - male genitalia | Needham p. 386 e |
| Cinygmula reticulata | Imago - genitalia | Arbona p. 177 fig. 58 |
| Cinygmula subaequalis | Larva - nymph | Arbona p. 065 fig. 6-12 |
| Cinygmula subaequalis (Cinygmula atlantica) | Imago - male genitalia | Needham p. 386 g |
| Cinygmula subaequalis (Cinygmula subequalis) | Imago - genitalia | Arbona p. 177 fig. 49 |
| Cinygmula tarda | Imago - male genitalia | Needham p. 386 b |
| Cinygmula uniformis | Imago - male genitalia | Needham p. 386 d |
| Claassenia sabulosa | Larva - abdominal terga | Merritt p. 232 fig. 14.55 |
| Claassenia sabulosa | Larva - head | Merritt p. 230 fig. 14.52 |
| Cleptelmis | Imago - pronotum | Merritt p. 454 fig. 20.279 |
| Cleptelmis | Larva - last abd. seg. lateral | Merritt p. 451 fig. 20.262 |
| Cleptelmis | Imago - ventral view | Merritt p. 454 fig. 20.278 |
| Climacia | Imago - labial palp | Merritt p. 307 fig. 16.51 |
| Climacia | Ova - egg | Merritt p. 306 fig. 16.42 |
| Climacia | Imago - lateral view | Merritt p. 307 fig. 16.52 |
| Climacia | Larva - egg-burster lateral | Merritt p. 306 fig. 16.41 |
| Climacia | |