Cabera erythemaria (yellow-dusted cream moth)
Cabera variolaria (pink-striped willow spanworm)
Caenis diminuta (northern small square-gilled mayfly)
Caenis hilaris (Say’s small square-gilled mayfly)
Caenis latipennis (common small square-gilled mayfly)
Caenis tardata (tardy small square-gilled mayfly)
Caenis youngi (Young’s small square-gilled mayfly)
Caenurgina crassiuscula (clover looper moth)
Caenurgina erechtea (forage looper moth)
Caliadurgus fasciatellus (spider wasp)
Caliroa cerasi (pear sawfly)
Callibaetis ferrugineus ferrugineus (red speckled dun)
Callibaetis pretiosus (pretty small minnow mayfly)
Calligrapha alni (russet alder leaf beetle)
Calligrapha bidenticola (bidentate leaf beetle)
Calligrapha californica (California calligraphy leaf beetle)
Calligrapha confluens (confluent leaf beetle)
Calligrapha multipunctata (common willow calligrapha)
Calligrapha philadelphica (dogwood leaf beetle)
Calligrapha scalaris (elm calligrapha)
Calligrapha scalaris group (Calligrapher beetles)
Calligrapha spiraea (meadowsweet leaf beetle)
Callima argenticinctella (orange-headed epicallima)
Calliopsis andreniformis (eastern miner bee)
Callirhytis quercus punctata (gouty oak gall wasp)
Callizzia amorata (gray scoopwing)
Callophrys augustinus (brown elfin)
Callophrys eryphon (western pine elfin)
Callophrys henrici (Henry’s elfin)
Callophrys niphon (eastern pine elfin)
Callophrys polios (hoary elfin)
Callopistria cordata (silver-spotted fern moth)
Callopistria mollissima (pink-shaded fern moth)
Callopistromyia annulipes (picture-winged fly)
Callopistromyia strigula (picture-winged fly)
Callosamia promethea (promethea moth)
Calomycterus setarius (imported long-horned weevil)
Calopteron reticulatum (banded net-wing beetle)
Calopteron terminale (end band net-winged beetle)
Calopteryx aequabilis (river jewelwing)
Calopteryx maculata (ebony jewelwing)
Caloptilia ostryaeella (ironwood leafcone moth)
Caloptilia rhoifoliella (sumac leaf blotch miner moth)
Caloptilia stigmatella (willow leafcone caterpillar noth)
Caloptilia violacella (tick-trefoil caloptilia moth)
Calycomyza flavinotum (leaf miner fly)
Calycomyza humeralis (aster leafminer)
Calycomyza malvae (mallow leaf miner)
Calycomyza promissa (leaf miner fly)
Calyptra canadensis (Canadian owlet)
Cameraria betulivora (birch-leaf blotchminer moth)
Camnula pellucida (clear-winged grasshopper)
Campaea perlata (pale beauty)
Campiglossa albiceps (fruit fly)
Camponotus nearcticus (smaller carpenter ant)
Camponotus novaeboracensis (New York carpenter ant)
Camponotus pennsylvanicus (eastern black carpenter ant)
Canarsia ulmiarrosorella (elm leaftier moth)
Canthon laevis (tumblebug)
Canthon nigricornis (tumblebug)
Canthon viridis (metallic green dung beetle)
Capis curvata (curved halter moth)
Capnia vernalis (vernal snowfly)
Capnura manitoba (Manitoba snowfly)
Capsus cinctus (plant bug)
Caradrina multifera (speckled rustic)
Caripeta angustiorata (brown pine looper moth)
Caripeta divisata (gray spruce looper moth)
Caripeta piniata (northern pine looper moth)
Carmenta anthracipennis (blazing star borer moth)
Carmenta ithacae (Ithaca clearwing moth)
Carsia sororiata (Manchester treble-bar moth)
Carterocephalus palaemon (Arctic skipper)
Carynota marmorata (marbled treehopper)
Cassida rubiginosa (thistle tortoise beetle)
Cassidini (tortoise beetles)
Catabena lineolata (fine-lined sallow)
Catastega aceriella (maple trumpet skeletonizer moth)
Catocala abbreviatella (abbreviated underwing)
Catocala amatrix (sweetheart underwing)
Catocala amestris (three-staff underwing)
Catocala amica (girlfriend underwing)
Catocala antinympha (sweetfern underwing)
Catocala badia coelebs (the old maid)
Catocala blandula (charming underwing)
Catocala briseis (briseis underwing)
Catocala cara (darling underwing)
Catocala cerogama (yellow-banded underwing)
Catocala clintonii (Clinton’s underwing)
Catocala coccinata (scarlet underwing)
Catocala concumbens (pink underwing)
Catocala connubialis (connubial underwing)
Catocala crataegi (hawthorn underwing)
Catocala epione (epione underwing)
Catocala gracilis (graceful underwing)
Catocala grynea (woody underwing)
Catocala habilis (habilis underwing)
Catocala ilia (ilia underwing)
Catocala judith (Judith’s underwing)
Catocala lacrymosa (tearful underwing)
Catocala lineella (little lined underwing)
Catocala micronympha (the little nymph)
Catocala minuta (little underwing)
Catocala mira (wonderful underwing)
Catocala nebulosa (clouded underwing)
Catocala neogama (the bride)
Catocala obscura (obscure underwing)
Catocala palaeogama (oldwife underwing)
Catocala parta (mother underwing)
Catocala piatrix (penitent underwing)
Catocala praeclara (praeclara underwing)
Catocala relicta (white underwing)
Catocala residua (residua underwing)
Catocala retecta (yellow-gray underwing)
Catocala robinsonii (Robinson’s underwing)
Catocala semirelicta (semirelict underwing)
Catocala similis (similar underwing)
Catocala sordida (sordid underwing)
Catocala subnata (youthful underwing)
Catocala ultronia (ultronia underwing)
Catocala unijuga (once-married underwing)
Catocala vidua (widow underwing)
Catocala whitneyi (Whitney“s underwing)
Caulocampus acericaulis (maple petiole borer)
Cecidomyiidae (gall midges and wood midges)
Cedusa incisa (derbid planthopper)
Cedusa maculata (derbid planthopper)
Cedusa spp. (derbid planthopper)
Cedusa vulgaris (derbid planthopper)
Celastrina ladon (spring azure)
Celastrina lucia (northern spring azure)
Celastrina neglecta (summer azure)
Celithemis elisa (calico pennant)
Celithemis eponina (Halloween pennant)
Celypha cespitana (celypha moth)
Cenopis pettitana (maple-basswood leafroller moth)
Cenopis reticulatana (reticulated fruitworm moth)
Cepphis armataria (scallop moth)
Ceraclea alagma (Vulpine long-horned caddisfly)
Ceraclea brevis (short long-horned caddisfly)
Ceraclea cancellata (cancelled long-horned caddisfly)
Ceraclea tarsipunctata (dot-footed long-horned caddisfly)
Ceraclea transversa (crosswise long-horned caddisfly)
Ceraclea vertreesi (Vertrees’s ceraclean caddisfly)
Ceraeochrysa lineaticornis (stripe-horned green lacewing)
Cerastipsocus venosus (tree cattle)
Cerastis salicarum (willow dart)
Ceratagallia sanguinolenta (clover leafhopper)
Ceratina calcarata (spurred ceratina)
Ceratina spp. (small carpenter bees)
Ceratina subg. Zadontomerus (small carpenter bees)
Ceratomia amyntor (elm sphinx)
Ceratomia catalpae (catalpa sphinx)
Ceratomia undulosa (waved sphinx)
Ceratopsyche vexa (troubled net-spinning caddisfly)
Cerceris halone (weevil wasp)
Cercobrachys etowah (small square-gilled mayfly)
Cercyonis pegala (common wood nymph)
Cerma cora (owl-eyed bird dropping moth)
Cerotainia albipilosa (robber fly)
Cerotainia macrocera (robber fly)
Cerotainia spp. (robber flies)
Cerotoma trifurcata (bean leaf beetle)
Ceuthophilus spp. (camel cricket)
Ceutorhynchus spp. (minute seed weevils)
Ceutorhynchus americanus (American weevil)
Ceutorhynchus neglectus (neglected minute seed weevil)
Ceutorhynchus pusio (minute seed weevil)
Ceutorhynchus rapae (cabbage curculio)
Ceutorhynchus squamatus (squamous minute seed weevil)
Ceutorhynchus typhae (cattail minute seed weevil)
Ceutorhynchus zimmermanni (Zimmerman’s minute seed weevil)
Chaetaglaea sericea (silky sallow)
Chaitophorus populicola (smoky poplar aphid)
Chalcophora virginiensis (sculptured pine borer)
Chalcosyrphus chalybeus (violet leafwalker)
Chalcosyrphus nemorum (dusky-banded leafwalker)
Chalcosyrphus piger (short-haired leafwalker)
Chalcosyrphus satanica (devil’s leafwalker)
Chalcosyrphus vecors (orange-hipped leafwalker)
Charadra deridens (laugher moth)
Charidotella sexpunctata bicolor (golden tortoise beetle)
Chariessa pilosa (pilose checkered beetle)
Charisalia americana (flower longhorn beetle)
Charops annulipes (ichneumonid wasp)
Chauliodes rastricornis (spring fishfly)
Chauliognathus pennsylvanicus (goldenrod soldier beetle)
Chelymorpha cassidea (argus tortoise beetle)
Cheumatopsyche campyla (bent net-spinning caddisfly)
Cheumatopsyche gracilis (slender net-spinning caddisfly)
Cheumatopsyche pasella (exposed net-spinning caddisfly)
Cheumatopsyche speciosa (beautiful net-spinning caddisfly)
Chilo plejadellus (rice stalk borer moth)
Chilocorus stigma (twice-stabbed lady beetle)
Chilostigma itascae (headwaters chilostigman caddisfly)
Chimarra obscura (indistinct finger-net caddisfly)
Chimarra socia (companionable finger-net caddisfly)
Chinavia hilaris (green stink bug)
Chionea valga (snow fly)
Chionodes discoocellella (eye-ringed chionodes moth)
Chionodes fondella (twirler moth)
Chionodes lugubrella (twirler moth)
Chionodes praeclarella (twirler moth)
Chionodes spp. (twirler moth)
Chironomini (non-biting midges)
Chironomus atroviridis (non-biting midge)
Chironomus plumosus (Winnebago lake fly)
Chironomus riparius (non-biting midge)
Chironomus spp. (non-biting midges)
Chlaenius sericeus (vivid metallic ground beetle)
Chloealtis abdominalis (Rocky Mountain sprinkled locust)
Chloealtis conspersa (sprinkled grasshopper)
Chlorochlamys chloroleucaria (blackberry looper)
Chlorochroa persimilis (stink bug)
Chlosyne gorgone (gorgone checkerspot)
Chlosyne harrisii (Harris’ checkerspot)
Chlosyne lacinia (bordered patch)
Chlosyne nycteis (silvery checkerspot)
Choristoneura conflictana (large aspen tortrix)
Choristoneura fractivittana (broken-banded leafroller moth)
Choristoneura fumiferana (eastern spruce budworm)
Choristoneura pinus (jack pine budworm moth)
Choristoneura rosaceana (oblique-banded leafroller moth)
Chortophaga viridifasciata (green-striped grasshopper)
Chromagrion conditum (aurora damsel)
Chrysanthrax cypris (bee fly)
Chrysididae (cuckoo wasps)
Chrysidinae (cuckoo wasps)
Chrysis angolensis (metallic bluish-green cuckoo wasp)
Chrysobothris femorata (flat-headed apple tree borer)
Chrysobothris sexsignata (six-marked jewel beetle)
Chrysochus auratus (dogbane beetle)
Chrysopa chi (x-marked green lacewing)
Chrysopa nigricornis (black-horned green lacewing)
Chrysopa oculata (golden-eyed lacewing)
Chrysopa quadripunctata (four-spotted green lacewing)
Chrysopa spp. (stink lacewings)
Chrysoperla carnea group (common green lacewing)
Chrysoperla plorabunda (weeping green lacewing)
Chrysoperla rufilabris (red-lipped lacewing)
Chrysopidae (green lacewings)
Chrysopilus ornatus (ornate snipe fly)
Chrysopilus quadratus (quadrate snipe fly)
Chrysopilus thoracicus (golden-backed snipe fly)
Chrysops mitis (benign deer fly)
Chrysops spp. (deer flies)
Chrysoteuchia topiarius (topiary grass-veneer)
Chrysomela scripta (cottonwood leaf beetle)
Chrysotoxum derivatum (narrow-banded meadow fly)
Chrysotoxum fasciolatum (hoverfly)
Chrysotoxum laterale (hoverfly)
Chrysotoxum plumeum (broad-banded meadow fly)
Chrysotoxum radiosum (punctate meadow fly)
Chrysotoxum spp. (hoverflies)
Chrysura smaragdula (cuckoo wasp)
Chytolita morbidalis (morbid owlet)
Chytonix palliatricula (cloaked marvel)
Cicadellidae (typical leafhoppers)
Cicindela denikei (Laurentian tiger beetle)
Cicindela duodecimguttata (twelve-spotted tiger beetle)
Cicindela formosa (big sand tiger beetle)
Cicindela fulgida fulgida (crimson saltflat tiger beetle)
Cicindela fulgida westbournei (crimson saltflat tiger beetle)
Cicindela hirticollis rhodensis (hairy-necked tiger beetle)
Cicindela lepida (little white tiger beetle)
Cicindela limbalis (common claybank tiger beetle)
Cicindela limbata nympha (sandy tiger beetle)
Cicindela longilabris (boreal long-lipped tiger beetle)
Cicindela macra macra (sandy stream tiger beetle)
Cicindela patruela patruela (northern barrens tiger beetle)
Cicindela punctulata (punctured tiger beetle)
Cicindela purpurea (purple tiger beetle)
Cicindela repanda (bronzed tiger beetle)
Cicindela scutellaris (festive tiger beetle)
Cicindela sexguttata (six-spotted tiger beetle)
Cicindela splendida cyanocephalata (splendid tiger beetle)
Cicindela tranquebarica (oblique-lined tiger beetle)
Cimbex americana (elm sawfly)
Cingilia catenaria (chain-dotted geometer)
Cisseps fulvicollis (yellow-collared scape moth)
Cladara atroliturata (scribbler moth)
Cladara limitaria (mottled gray carpet)
Clastoptera obtusa (alder spittlebug)
Clastoptera proteus (dogwood spittlebug)
Clemensia albata (little white lichen moth)
Clepsis clemensiana (Clemens’ clepsis moth)
Clepsis melaleucanus (black-patched clepsis moth)
Clepsis peritana (garden tortrix)
Clepsis persicana (white triangle tortrix)
Clepsis virescana (greenish apple moth)
Climacia areolaris (spongillafly)
Climaciella brunnea (brown wasp mantidfly)
Cloeon dipterum (pond olive)
Cloeon dipterum (pond olive)
Clostera albosigma (sigmoid prominent)
Clostera apicalis (apical prominent)
Clostera inclusa (angle-lined prominent)
Closterotomus norwegicus (potato mirid)
Clytus ruricola (round-necked longhorn beetle)
Cnaemidophorus rhododactyla (rose plume moth)
Coccinella novemnotata (nine-spotted lady beetle)
Coccinella septempunctata (seven-spotted lady beetle)
Coccinellidae (lady beetles)
Cochylichroa arthuri (Arthur’s sunflower moth)
Cochylichroa hoffmanana (Hoffman’s cochylid moth)
Cochylichroa hospes (banded sunflower moth)
Coelioxys alternatus (alternate cuckoo-leaf-cutter bee)
Coelioxys octodentata (eight-toothed cuckoo leaf-cutter bee)
Coenagrion interrogatum (subarctic bluet)
Coenagrion resolutum (taiga bluet)
Coenomyia ferruginea (stink fly)
Coenonympha tullia inornata (inornate common ringlet)
Coenonympha tullia (common ringlet)
Coenophila opacifrons (blueberry dart)
Coenosia tigrina (tiger fly)
Coenus delius (stink bug)
Coleomegilla maculata (spotted pink lady beetle)
Coleophora trifolii (large clover casebearer moth)
Coleotechnites quercivorella (twirler moth)
Colias eurytheme (orange sulphur)
Colias interior (pink-edged sulphur)
Colias philodice (clouded sulphur)
Colladonus clitellarius (saddleback leafhopper)
Colladonus montanus (leafhopper)
Colladonus waldanus (leafhopper)
Colletes aberrans (aberrant cellophane bee)
Colletes albescens (white cellophane bee)
Colletes americanus (American cellophane bee)
Colletes andrewsi (Andrew’s cellophane bee)
Colletes brevicornis (short-horned cellophane bee)
Colletes compactus (aster cellophane bee)
Colletes consors (kindred cellophane bee)
Colletes eulophi (cellophane bee)
Colletes hyalinus (hyaline cellophane bee)
Colletes impunctatus (impunctate cellophane bee)
Colletes inaequalis (unequal cellophane bee)
Colletes kincaidii (Kincaid’s cellophane bee)
Colletes latitarsis (broad-footed cellophane bee)
Colletes mandibularis (mandibular cellophane bee)
Colletes nudud (sumac cellophane bee)
Colletes phaceliae (scorpionweed plasterer bee)
Colletes robertsonii (Robertson’s plasterer bee)
Colletes rufocinctus (red-belted plasterer bee cellophane bee)
Colletes simulans (spine-shouldered cellophane bee)
Colletes solidaginis (goldenrod cellophane bee)
Colletes speculiferus (beach dune cellophane bee)
Colletes spp. (cellophane bees)
Colletes susannae (Susanna’s cellophane bee)
Colletes validus (blueberry cellophane bee)
Colletes willistoni (Williston’s cellophane bee)
Colletes wilmattae (Wilmatte’s plasterer bee)
Colpotrochia trifasciata (ichneumonid wasp)
Compsilura concinnata (tachinid fly)
Compsobata univitta (stilt-legged fly)
Condica videns (white-dotted groundling)
Condylostylus caudatus group (longlegged flies)
Condylostylus longicornis (longlegged fly)
Condylostylus patibulatus (longlegged fly)
Condylostylus sipho group (longlegged flies)
Coniopteryx vicina (dustywing)
Conocephalus brevipennis (short-winged meadow katydid)
Conocephalus fasciatus (slender meadow katydid)
Conocephalus nemoralis (woodland meadow katydid)
Conocephalus nigropleurum (black-sided meadow katydid)
Conocephalus strictus (straight-lanced meadow katydid)
Conservula anodonta (sharp angle shades)
Contarinia verrucicola (linden wart gall midge)
Conwentzia hageni (dustywing)
Copivaleria grotei (Grote’s sallow)
Coquillettidia perturbans (cattail mosquito)
Coranarta luteola (small dark yellow underwing)
Cordulegaster maculata (twin-spotted spiketail)
Cordulegaster obliqua (arrowhead spiketail)
Cordulia shurtleffii (American emerald)
Corydalus cornutus (eastern dobsonfly)
Corythucha arcuata (oak lace bug)
Corythucha celtidis (hackberry lace bug)
Corythucha ciliata (eastern sycamore lace bug)
Corythucha cydoniae (hawthorn lace bug)
Corythucha juglandis (walnut lace bug)
Corythucha marmorata (chrysanthemum lace bug)
Corythucha mollicula (lace bug)
Corythucha pallipes (birch lace bug)
Corythucha pergandei (alder lace bug)
Cosmia calami (American dun-bar moth)
Cosmoconus canadensis (ichneumonid wasp)
Cosmoconus spp. (ichneumonid wasps)
Cosmopepla lintneriana (twice-stabbed stink bug)
Costaconvexa centrostrigaria (bent-lined carpet)
Cotinis nitida (green june beetle)
Crabro spp. (shield-handed wasps)
Crabroninae (square-headed wasps)
Tribe Crabronini (square-headed wasps)
Crambidia casta (pearly-winged lichen moth)
Crambidia pallida (pale lichen moth)
Crambus agitatellus (double-banded grass-veneer)
Crambus albellus (small white grass-veneer)
Crambus alienellus (grass veneer)
Crambus awemellus (Aweme grass-veneer)
Crambus bidens (forked grass-veneer)
Crambus girardellus (Girard’s grass-veneer)
Crambus laqueatellus (eastern grass-veneer)
Crambus leachellus (Leach’s grass-veneer)
Crambus pascuella (inlaid grass-veneer)
Crambus perlella (yellow satin veneer)
Crambus praefectellus (common grass-veneer)
Crambus saltuellus (pasture grass-veneer)
Crambus spp. (grass-veneer)
Craterocercus spp. (common sawflies)
Cratichneumon annulatipes (ichneumonid wasp)
Cratichneumon paratus (ichneumonid wasp)
Cratichneumon pteridis (ichneumonid wasp)
Cratichneumon spp. (ichneumonid wasps)
Cratichneumon sublatus (ichneumonid wasp)
Cratichneumon tyloidifer (ichneumonid wasp)
Cratichneumon unifasciatorius (ichneumonid wasp)
Cratichneumon vescus (ichneumonid wasp)
Cratichneumon vinnulus (ichneumonid wasp)
Cratichneumon w-album (ichneumonid wasp)
Crocigrapha normani (Norman’s quaker)
Croesus latitarsus (dusky birch sawfly)
Cryptocala acadiensis (catocaline dart)
Ctenucha virginica (Virginia ctenucha)
Cucullia asteroides (asteroid moth)
Cucullia convexipennis (brown-hooded owlet)
Cucullia florea (gray hooded owlet)
Cucullia lucifuga (hooded owlet)
Cupido amyntula amyntula (western tailed-blue)
Cupido comyntas (eastern tailed-blue)
Cuterebra buccata (rabbit bot fly)
Cuterebra emasculator (squirrel bot fly)
Cuterebra grisea (rodent bot fly)
Cuterebra spp. (rodent bot flies)
Cuterebra sterilator (rodent bot fly)
Cybister fimbriolatus (fringed diving beetle)
Cycloneda munda (polished lady beetle)
Cyclophora nanaria (dwarf tawny wave)
Cyclophora pendulinaria (sweetfern geometer moth)
Cycnia oregonensis (Oregon cycnia)
Cycnia tenera (delicate cycnia)
Cydia lacustrina (olethreutine leafroller moth)
Cydia latiferreana (filbertworm moth)
Cydia pomonella (codling moth)
Cydia spp. (olethreutine leafroller moths)
Cylindromyia argentia (tachinid fly)
Cylindromyia bicolor (tachinid fly)
Cylindromyia carolinae (tachinid fly)
Cylindromyia euchenor (tachinid fly)
Cylindromyia interrupta (tachinid fly)
Cylindromyia spp. (tachinid flies)
Cynips quercusfolii (cherry gall wasp)
Cyrtolobus discoidalis (treehopper)
Cyrtolobus dixianus (treehopper)
Cyrtolobus fuliginosus (treehopper)
Cyrtolobus fuscipennis (treehopper)
Cyrtolobus griseus (treehopper)
Cyrtolobus maculifrontis (treehopper)
Cyrtolobus pallidifrontis (treehopper)
Cyrtolobus puritanus (treehopper)
Cyrtolobus spp. (treehoppers)
Cyrtolobus tuberosus (treehopper)
Cyrtolobus vau (treehopper)
Cyrtophorus verrucosus (ant-like longhorn beetle)
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