- Acalymma trivittatum, Western striped cucumber beetle
- Acalymma vittatum, Striped cucumber beetle
- Adalia bipunctata, Coccinella bipunctata Linnaeus, 1758;Two-spotted lady beetle;Two-spotted ladybug
- Adoretus compressus, Rose beetle;Brown cockchafer
- Adoretus sinicus, Chinese rose beetle;Chinese Rose Beetle
- Adoretus versutus, Rose beetle;Japanese rose beetle;Indian rose beetle;Fijian cane root grub
- Aeolesthes sarta, City Longhorn Beetle
- Agriotes lineatus, Lined click beetle
- Ahasverus advena, Cathartus advena Waltl, 1834;Foreign grain beetle
- Alaus oculatus, Eyed click beetle
- Alleculidae, Comb-clawed beetles
- Alniphagus aspericollis, Alder bark beetle
- Alphitobius laevigatus, Microphyes rufipes Macleay, 1872;Opatrum laevigatum Fabricius, 1781;Black fungus beetle
- Alphitophagus bifasciatus, Alphitophagus quadripustulatus Stephens, 1832;Diaperis pictus Ménétriés, 1832;Phylethus populi Redtenbacher, 1849;Platydema lilliputanum Carter, 1937;Diaperis bifasciatus Say, 1824;Twobanded fungus beetle
- Altica canadensis, Prairie flea beetle
- Altica carinata, Elm flea beetle
- Altica chalybea, Grape flea beetle
- Altica sylvia, Blueberry flea beetle
- Alticinae, Flea beetle
- Amphizoidae, Trout-stream beetles
- Anatis labiculata, Fifteen-spotted lady beetle;Fifteen-spotted ladybug
- Anatis mali, Eye-spotted lady beetle;Eye-spotted ladybug
- Anobiidae, Death-watch beetles;Spider beetles;Powderpost beetles
- Anobium punctatum, Byrrhus domesticum Fourcroy, 1785;Ptinus punctatus DeGeer, 1774;Furniture beetle
- Anomala antigua, White muscardine fungus beetle
- Anomala cupripes, Large green chafer beetle
- Anomala orientalis, Oriental beetle
- Anomala sulcatula, Chafer Beetle
- Anomoea laticlavia, Claycolored leaf beetle
- Anoplognathus viridiaeneus, King Christmas Beetle;Melolontha viridiaenea Donovan, 1805;Rutela caesarea Billberg, 1817;Rutela latreillei Gyllenhal, 1817
- Anoplophora chinensis, Citrus Longhorned Beetle
- Anoplophora glabripennis, Asian Long-horned Beetle;Longicorne Asiatique;Starry Sky Beetle;Asian Longhorned Beetle
- Anoplophora malasiaca, Rough-shouldered White-spotted Longhorn Beetle
- Anthicidae, Antlike flower beetles;Ant-like beetles
- Anthicus floralis, Narrownecked grain beetle
- Anthrenocerus australis, Australian Carpet Beetle;Anthremis australis Hope, 1845;Cryptorhopalum erichsoni Reitter, 1881;Trogoderma riguum Erichson, 1842;Anthrenus australis Hope, 1843
- Anthrenus flavipes, Furniture carpet beetle
- Anthrenus scrophulariae, Carpet beetle
- Anthrenus verbasci, Anthrenus adspersus Herbst, 1797;Anthrenus destructor Melsheimer, 1844;Anthrenus florilegus Fourcroy, 1785;Anthrenus nitidulus Küster, 1847;Anthrenus pictus Germar, 1813;Anthrenus tomentosus Thunberg, 1815;Anthrenus tricolor Herbst, 1797;Bostrichus varius Fabricius, 1775;Byrrhus verbasci Linnaeus, 1767;Varied carpet beetle
- Apogonia cribricollis, Chafer beetle;White grub
- Araeocorynus cumingi, Mauna loa bean beetle
- Aricerus eichhoffi, Fig Bark Beetle;Fig Twig-borer;Hylesinosoma fici Lea, 1904;Hylesinus fici Lea, 1904
- Asynonychus godmanni, Fuller rose beetle
- Attagenus fasciatus, Anthrenus gloriosae Fabricius, 1798;Attagenus annulatus Dejean, 1821;Attagenus annulifer Laporte, 1840;Attagenus cinnamomeus Roth, 1851;Attagenus gossypiatus Fauvel, 1903;Attagenus plebeius Sharp, 1885;Attagenus unifasciatus Fairmaire, 1860;Trogoderma subfasciatum Chevrolat, 1863;Anthrenus fasciatus Thunberg, 1795;Wardrobe beetle
- Attagenus unicolor, Black Carpet Beetle;Black carpet beetle;Attagenus megatoma
- Attelabidae, Leaf-rolling beetles;Leaf Rolling Weevils
- Aulacophora foveicollis, Red pumpkin beetle;Hamra beetle;Red melon beetle;Red leaf beetle
- Aulacophora indica, Leaf beetle;Pumpkin beetle;Squash beetle
- Autoserica, Garden beetle
- Batocera rubus, Mango longhorn beetle;Rubber root borer;Lateral-banded mango longhorn beetle
- Boridae, Conifer Bark Beetles
- Bostrichidae, Branch and twig borers;Horned powder-post beetles;False powder-post beetles;Borers
- Brathinidae, Grass-root beetles
- Brentidae, Straight-snouted beetles;Straight-snouted Weevils;Brenthidae;Primitive weevils
- Bruchidae, Seed beetles;Weevils
- Brumoides suturalis, Three-striped lady beetle;Three-stripped ladybug
- Buprestidae, Metallic wood-boring beetles;Flat-headed wood-borers
- Byrrhidae, Pill beetles
- Byturidae, Fruitworm beetles;Fruit worms
- Callidielleum rufipenne, Japanese Cedar Longhorned Beetle
- Callidium villosulum, Brown Fir Longhorned Beetle
- Calopteron reticulatum, Banded net-winged;Reticulated net-winged beetle
- Calvia quatuordecimguttata, Cream-spotted lady beetle;Cream-spotted ladybug
- Cantharidae, Soldier beetles
- Carabidae, Ground beetles;Tiger beetles;Ground Beetles
- Carpophilus dimidiatus, Nitidula dimidiatus Fabricius, 1792;Cornsap beetle;Corn sap beetle
- Carpophilus hemipterus, Dermestes hemipterus Linnaeus, 1758;Driedfruit beetle
- Carpophilus humeralis, Yellowshouldered souring beetle;Pineapple beetle
- Carpophilus lugubris, Dusky sap beetle
- Cartodere constricta, Plaster beetle
- Cassidinae, Tortoise beetles
- Cathartus quadricollis, Silvanus quadricollis Guérin-Méneville, 1844;Squarenecked grain beetle
- Cebrionidae, Cebrionid beetles
- Cephaloidae, False longhorn beetles
- Cerambycidae, Long-horned beetles;Longhorn beetles;Longhorned Beetles
- Cerophytidae, Cerophytid beetles
- Cerotoma trifurcata, Bean leaf beetle
- Chaetocnema confinis, Sweetpotato flea beetle
- Chaetocnema denticulata, Toothed flea beetle
- Chaetocnema ectypa, Desert corn flea beetle
- Chaetocnema pulicaria, Corn flea beetle
- Charidotella sexpunctata, Golden tortoise beetle
- Chauliognathus lugubris, Plague Soldier Beetle;Selenurus pulchellus notophilus Blackburn, 1900;Telephorus pulchella WS Macleay, 1826;Cantharis lugubris Fabricius, 1801
- Chauliognathus pennsylvanicus, Goldenrod Soldier Beetle;Pennsylvania Leatherwing
- Chelonariidae, Chelonariid beetles
- Chelymorpha cassidea, Argus tortoise beetle
- Chilocorus stigma, Twice-stabbed lady beetle;Twice-stabbed ladybug
- Chlamisinae, Warty leaf beetle
- Chondropyga dorsalis, Cowboy Beetle;Cetonia hookeri Swartz, 1817;Eupoecila deyrollei Thomson, 1878;Cetonia dorsalis Donovan, 1805
- Chrysolina quadrigemina, Chrysomela quadrigemina Suffrian, 1851;Klamathweed beetle
- Chrysolopus spectabilis, Botany Bay Weevil;Diamond Beetle;Diamond Weevil;Chrysolophus spectabilis Fabricius, 1775;Curculio spectabilis Fabricius, 1775
- Chrysomela crotchi, Aspen leaf beetle
- Chrysomela scripta, Cottonwood leaf beetle
- Chrysomelidae, Leaf beetles;Leaf Beetles
- Cicindela nevadica_lincolniana, Salt Creek tiger beetle
- Cicindelidae, Tiger Beetles;Tiger beetles
- Cisidae, Minute tree-fungus beetles
- Clambidae, Fringe-winged beetles
- Clavigeridae, Ant-loving beetles
- Cleridae, Checkered beetles;Checkered Beetles
- Clivina impressifrons, Slender seedcorn beetle
- Cnestus solidus, Thick-set Ambrosia Beetle;Xyleborus solidus Eichhoff, 1868
- Coccinella novemnotata, Nine-spotted lady beetle;Nine-spotted ladybug
- Coccinella septempunctata, Seven-spotted lady beetle;Seven-spotted ladybug
- Coccinella transversoguttata, Transverse lady beetle;Transverse ladybug
- Coccinella trifasciata, Three-banded lady beetle;Three-banded ladybug
- Coccinellidae, Ladybird beetles;Lady Beetles;Lady beetles;Ladybugs;Ladybirds;Ladybird Beetles
- Coelophora inaequalis, Coccinella novemmaculata Fabricius, 1781;Coccinella novempunctata Fabricius, 1775;Coccinella religiosa Lea, 1902;Coelophora mastersi Blackburn, 1892;Coelophora ripponi Crotch, 1874;Coelophora veranioides Blackburn, 1894;Coccinella inaequalis Fabricius, 1775;Common australian lady beetle;Common australian ladybug
- Coelophora pupillata, Ten-spotted lady beetle;Ten-spotted ladybug;Bothrocalvia pupillata
- Coleomegilla maculata, Spotted lady beetle;Spotted ladybug
- Colydiidae, Cylindrical bark beetles;Cylindrical Bark Beetles
- Colymbomorpha vittata, Spring Beetle
- Conophthorus coniperda, White pine cone beetle
- Conophthorus edulis, Pinon cone beetle
- Conophthorus radiatae, Monterey pine cone beetle
- Copris fallaciosus, Kenyan Dung Beetle;Copris integer Harold, 1869
- Copris incertus prociduus, Black dung beetle
- Corthylus columbianus, Columbian timber beetle
- Cotinis nitida, Green June beetle
- Creophilus maxillosus, Hairy rove beetle
- Crioceris asparagi, Asparagus beetle
- Crioceris duodecimpunctata, Spotted asparagus beetle
- Cryptocephalinae, Cylindrical leaf beetles
- Cryptolaemus montrouzieri, Mealybug Lady Beetle;Mealybug Ladybird;Mealybug Destroyer
- Cryptolestes ferrugineus, Cucujus testaceus Paykull, 1799 junior homonym;Cucujus ferrugineus Stephens, 1831;Rusty grain beetle
- Cryptolestes pusillus, Cucujus minutus Olivier, 1791 junior homonym;Cucujus pusillus Schoenherr, 1817;Flat grain beetle
- Cryptophagidae, Silken fungus beetles;Mold beetles;Fungus beetles
- Cryptophagus acutangulus, Acute-angled fungus beetle
- Cryptophagus varus, Sigmoid fungus beetle
- Cucujidae, Flat bark beetles;Flat Bark Beetles
- Cupedidae, Reticulated beetles
- Curculionidae, Snout beetles;Amycteridae;Ambrosia;Ambrosia beetles;Bark beetles;Timber beetles;Engraver beetles;Weevils;Aquatic weevils;Scout beetles
- Cycloneda munda, Polished lady beetle;Polished ladybug
- Cynaeus angustus, Larger black flour beetle
- Dascillidae, Soft-bodied plant beetles
- Dasytidae, Soft-winged flower beetles
- Deloyala guttata, Mottled tortoise beetle
- Dendroctonus adjunctus, Roundheaded pine beetle
- Dendroctonus approximatus, Mexican pine beetle
- Dendroctonus brevicomis, Western pine beetle
- Dendroctonus frontalis, Southern pine beetle
- Dendroctonus jeffreyi, Jeffrey pine beetle
- Dendroctonus micans, European spruce beetle;Great Spruce Bark Beetle
- Dendroctonus murrayanae, Lodgepole pine beetle
- Dendroctonus ponderosae, Mountain pine beetle
- Dendroctonus pseudotsugae, Douglas-fir beetle
- Dendroctonus punctatus, Boreal spruce beetle
- Dendroctonus rufipennis, Spruce beetle
- Dendroctonus simplex, Eastern larch beetle
- Dendroctonus terebrans, Black turpentine beetle
- Dendroctonus valens, Red turpentine beetle
- Dermestes ater, Black Larder Beetle;Dermestes cadaverinus Fabricius, 1775;Dermestes chinensis Motschulsky, 1866;Dermestes cinereus Motschulsky, 1848;Dermestes domesticus Germar, 1824;Dermestes domesticus subsulcatus Ballion, 1878;Dermestes favarcqui Godard, 1883;Dermestes felinus Fabricius, 1787;Dermestes hispidulus Montrouzier, 1860;Dermestes noxius Mulsant and Rey, 1867;Dermestes piceus Thunberg, 1781;Dermestes rufoapicalis Pic, 1951;Dermestes subcostatus Murray, 1867;Black larder beetle
- Dermestes lardarius, Larder Beetle;Dermestes luganensis Stierlin, 1902;Larder beetle
- Dermestes maculatus, Common Hide Beetle;Dermestes australis Dejean, 1821;Dermestes cinereus Redtenbacher, 1867;Dermestes elongatus Hope, 1834;Dermestes lateralis Sturm, 1826;Dermestes lupinus Cristofori, 1832;Dermestes lupinus Mannerheim, 1843;Dermestes marginatus Thunberg, 1781;Dermestes meculatus Li, 1988;Dermestes roei Hope, 1834;Dermestes semistriatus Boheman, 1851;Dermestes senegalensis Cristofori, 1832;Dermestes senex Germar, 1824;Dermestes truncatus Casey, 1916;Dermestes vulpinus Fabricius, 1781;Dermestes vulpinus rattulus Mulsant and Rey, 1867;Dermestes vulpinus sudanicus Gredler, 1878;Hide beetle
- Dermestidae, Dermestids;Skin beetles;Carpet beetles;Dermestid beetles
- Dermolepida albohirtum, Greyback Cane Beetle;Lepidoderma lansbergei Brenske, 1895;Lepidoderma waterhousei Brenske, 1895;Rhopaea aruense Lansberge, 1879;Lepidoderma albohirtum Waterhouse, 1875
- Derocrepis erythropus, Redlegged flea beetle
- Derodontidae, Tooth-necked fungus beetles
- Diabrotica balteata, Banded cucumber beetle
- Diabrotica undecimpunctata, Spotted cucumber beetle;Southern corn rootworm
- Diabrotica undecimpunctata_undecimpunctata, Western spotted cucumber beetle
- Diachus auratus, Cryptocephalus auratus Fabricius, 1801;Bronze leaf beetle
- Digitonthophagus gazella, Gazella Dung Beetle;Onthophagus gazella Fabricius, 1787;Scarabaeus gazella Fabricius, 1787
- Dinoderus minutus, Apate japonicus Lesne, 1895;Dinoderus bifoveolatus Zoufal, 1894;Dinoderus substriatus Stephens, 1830;Dinoderus vertens Walker, 1859;Rhizopertha sicula Baudi, 1873;Apate minutus Fabricius, 1775;Bamboo powderpost beetle
- Diphucephala colaspidoides, Green Scarab Beetle;Diphucephala lineatocollis Boisduval, 1835;Diphucephala splendens Macleay, 1826;Melolontha colaspidoides Schönherr, 1817;Melolontha colaspidoides Gyllenhal, 1817
- Diphucephala edwardsii, Green Spring Beetle
- Disonycha triangularis, Threespotted flea beetle
- Disonycha xanthomelas, Spinach flea beetle
- Dryocoetes betulae, Birch bark beetle
- Dryocoetes confusus, Western balsam bark beetle
- Dryopidae, Long-toed water beetles
- Dynastes granti, Southwestern Hercules beetle
- Dynastes tityus, Eastern Hercules beetle
- Dytiscidae, Predaceous diving beetles;Predacious diving beetles;Predacious Diving Beetles
- Eburia quadrigeminata, Ivory-marked beetle
- Elateridae, Click beetles;Wireworms;Click Beetles
- Elmidae, Riffle beetles
- Elymus repens, Common Couch;Agropyron repens (L) P Beauv;Elytrigia repens;Gould;Triticum repens L;Quackgrass;Agropyron repens (L) P Beauv;Elytrigia repens (L) Desv ex Nevski;Elytrigia vaillantiana (Wulfen & Schreb) Beetle;Triticum vaillantianum Wulfen & Schreb
- Endomychidae, Handsome fungus beetles;Handsome Fungus Beetles
- Entomoscelis americana, Red turnip beetle
- Epicaerus imbricatus, Imbricated snout beetle
- Epicauta cinerea, Clematis blister beetle
- Epicauta fabricii, Ashgray blister beetle
- Epicauta lemniscata, Threestriped blister beetle
- Epicauta maculata, Spotted blister beetle
- Epicauta pennsylvanica, Black blister beetle
- Epicauta pestifera, Margined blister beetle
- Epicauta subglabra, Caragana blister beetle
- Epicauta vittata, Striped blister beetle
- Epilachna borealis, Squash beetle
- Epilachna varivestis, Mexican bean beetle;Epilachna varivestris
- Epitrix cucumeris, Potato flea beetle
- Epitrix fuscula, Eggplant flea beetle
- Epitrix hirtipennis, Tobacco flea beetle
- Epitrix subcrinita, Western potato flea beetle
- Epitrix tuberis, Tuber flea beetle
- Erotylidae, Pleasing fungus beetles;Pleasing Fungus Beetles
- Erynephala puncticollis, Beet leaf beetle
- Eucnemidae, False click beetles
- Euetheola humilis rugiceps, Sugarcane beetle
- Euglenidae, Antlike leaf beetles
- Euoniticellus africanus, Greater Sandy Dung Beetle;Oniticellus africanus Harold, 1873
- Euoniticellus intermedius, Northern Sandy Dung Beetle;Oniticellus intermedius Reiche, 1849
- Euoniticellus pallipes, Southern Sandy Dung Beetle;Scarabaeus pallipes Fabricius, 1781
- Euphoria inda, Bumble flower beetle
- Euplatypus parallelus, Common Ambrosia Beetle;Platypus parallelus Fabricius, 1801;Bostrichus parallelus Fabricius, 1801
- Eupoecila australasiae, Fiddler Beetle;Cetonia panzeri Swartz, 1817;Cetonia australasiae Donovan, 1805
- Galeruca browni, Peppergrass beetle
- Galerucella nymphaeae, Waterlily leaf beetle
- Galerucinae, Skeletonizing leaf beetles
- Georyssidae, Minute mud-loving beetles
- Geotrupidae, Earth-boring dung beetles
- Glaphyridae, Bumble Bee Scarab Beetles
- Gnatocerus cornutus, Neomida cucullata Montrouzier, 1860;Gnatocerus laeviusculus Stephens, 1832;Gnatocerus ruber Thunberg, 1814;Trogosita cornuta Fabricius, 1798;Trogosita maxillosa Palisot de Beauvois, 1805;Broadhorned flour beetle
- Gnatocerus maxillosus, Slenderhorned flour beetle
- Gonioctena americana, American aspen beetle
- Gyrinidae, Whirligig beetles
- Haliplidae, Crawling water beetles
- Halmus chalybeus, Coccinella chalybeus Boisduval, 1835;Steelblue lady beetle;Steelblue ladybug
- Haptoncus luteolus, Pineapple sap beetle;Dried fruit beetle;Souring beetle;Escarabajo de frutas
- Harmonia axyridis, Multicolored Asian lady beetle;Southern lady beetle;Multicolored asian lady beetle
- Helodidae, Marsh beetles
- Hemipeplidae, Hemipeplid beetles
- Heteroceridae, Variegated mud-loving beetles
- Heteronychus arator, African Black Beetle;Heteronychus sanctaehelenae Blanchard, 1846;Scarabaeus arator Fabricius, 1775;Black Maize Beetle
- Heteronyx flavus, Honey Beetle;Heteronyx angustus Blackburn, 1890
- Hippodamia convergens, Convergent lady beetle;Convergent ladybug
- Hippodamia parenthesis, Parenthesis lady beetle;Parenthesis ladybug
- Hippodamia tredecimpunctata, Thirteen-spotted lady beetle;Thirteen-spotted ladybug
- Hippodamia variegata, Coccinella variegata Goeze, 1777;Variegated lady beetle;Variegated ladybug
| - Histeridae, Hister beetles;Clown beetles
- Hydrophilidae, Water scavenger beetles
- Hydroscaphidae, Skiff beetles
- Hylastes ater, Black Pine Bark Beetle;Hylastes pinicola Bedel, 1888;Hylesinus chloropus Duftschmidt, 1825;Ipsocossonus anomalus Oke, 1934;Bostrichus ater Paykull, 1800;Black Pine Beetle
- Hyleops glabratus, Hoop-pine Stitch Beetle
- Hylurdrectonus piniarius, Araucaria Bark Beetle;Hoop-pine Bark Beetle
- Hylurgopinus rufipes, Native elm bark beetle
- Hylurgus ligniperda, Golden-haired Bark Beetle;Bostrichus ligniperda Fabricius, 1787;Red-haired Pine Bark Beetle
- Hyperaspis jocosa, Orthezia lady beetle;Orthezia ladybug
- Hypocryphalus mangiferae, Cryphalus inops Eichhoff, 1872;Cryphalus mimicus Schedl, 1942;Cryphalus subcylindricus Schedl, 1942;Hypocryphalus opacus Schedl, 1942;Hypothenemus griseus Blackburn, 1885;Cryphalus mangiferae Stebbing, 1914;Mango bark beetle
- Hypomeces squamosus, Gold-dust beetle;Gold-dust weevil;Green weevil
- Hypothenemus obscurus, Apple twig beetle
- Inopeplidae, Inopeplid beetles
- Ips accuminatus, Engraver Beetle
- Ips grandicollis, Eastern Five-spined Ips;Five-spined Bark Beetle;Tomicus grandicollis Eichhoff, 1868;Eastern fivespined ips
- Ips sexdentatus, Six-spined Engraver Beetle
- Ips typographus, European Spruce Bark Beetle
- Jonthonota nigripes, Blacklegged tortoise beetle
- Kateretidae, Short-winged Flower Beetles
- Labidomera clivicollis, Swamp milkweed leaf beetle
- Laemophloeidae, Lined Flat Bark Beetles;Grain beetles
- Lagriidae, Long-jointed beetles
- Lamprima aurata, Golden Stag Beetle;Lamprima cuprea Latreille, 1817;Lamprima fulgida Boisduval, 1835;Lamprima puncticollis Dejean, 1836;Lamprima rutilans Erichson, 1842;Lamprima schreibersii Hope and Westwood, 1845;Lamprima tasmaniae Hope and Westwood, 1845;Lucanus coeruleus Donovan, 1805
- Languriidae, Lizard beetles;Lizard Beetles
- Lasioderma serricorne, Ptinus serricorne Fabricius, 1792;Cigarette beetle
- Latheticus oryzae, Longheaded flour beetle
- Lathridius minutus, Squarenosed fungus beetle
- Latridiidae, Minute brown scavenger beetles
- Leiodidae, Round fungus beetles;Round Fungus Beetles
- Lema trilinea, Threelined potato beetle
- Lepidiota rothei, Brown Eucalypt Beetle;Lepidiota bovilli Blackburn, 1912;Lepidiota koebelei Blackburn, 1912;Lepidiota parva Moser, 1913
- Leptinidae, Mammal-nest beetles
- Leptinotarsa decemlineata, Colorado potato beetle
- Leptinotarsa juncta, False potato beetle
- Leptodiridae, Small carion beetles
- Liatongus militaris, Yellow Shouldered Dung Beetle;Oniticellus militaris Castelnau, 1840
- Ligyrus gibbosus, Carrot beetle
- Lilioceris lilii, Lily leaf beetle
- Limnebiidae, Minute moss beetles
- Limnichidae, Minute marsh-loving beetles
- Limulodidae, Horseshoe crab beetles
- Lissotes menalcas, Mt Mangana Stag Beetle
- Lucanidae, Stag beetles;Stag Beetles
- Lucanus capreolus, Reddish-brown Stag Beetle;Pinching Beetle
- Lucanus elaphus, Giant stag beetle
- Lycidae, Net-winged beetles
- Lyctidae, Powder-post beetles
- Lyctus planicollis, Southern lyctus beetle
- Lymexylidae, Ship-timber beetles
- Lymexylonidae, Timberworm beetles
- Lytta nuttalli, Nuttall blister beetle
- Lytta sayi, Say blister beetle
- Macrohaltica ambiens, Alder flea beetle
- Malachiidae, Soft-winged flower beetles
- Maladera castanea, Asiatic garden beetle
- Megacyllene robiniae, Locust borer;Locust Borer;Locust Borer Beetle
- Melandryidae, False darkling beetles
- Melanophila consputa, Charcoal beetle
- Meloidae, Blister beetles;Ship-timber beetles
- Melyridae, Soft-winged Flower Beetles
- Metanastes vulgivagus, Black Beetle;Metanastes blackburni Arrow, 1911;Pentodon australis Blackburn, 1888;Heteronychus vulgivagus Olliff, 1889
- Metrioidea brunneus, Corn silk beetle
- Metriona bicolor, Golden tortoise beetle
- Mezium americanum, Gibbium americanum Laporte, 1840;American spider beetle
- Micromalthidae, Micromalthid beetles
- Microtheca ochroloma, Yellowmargined leaf beetle
- Monocesta coryli, Larger elm leaf beetle
- Monochamus alternatus, Pine Sawyer Beetle
- Monochamus saltuarius, Longhorn Beetle
- Monoedidae, Monoedid beetles
- Monommidae, Monommid beetles
- Monotomidae, Small flattened bark beetles
- Mordellidae, Tumbling flower beetles
- Murmidiidae, Murmidiid beetles
- Mycetaeidae, Mycetaeid fungus beetles
- Mycetophagidae, Hairy fungus beetles
- Mycetophagus quadriguttatus, Spotted hairy fungus beetle
- Necrobia ruficollis, Dermestes ruficollis Fabricius, 1775;Redshouldered ham beetle
- Necrobia rufipes, Clerus rufipes DeGeer, 1775;Redlegged ham beetle
- Nemonychidae, Pine-flower snout beetles
- Neochlamisus cribripennis, Blueberry case beetle
- Neochlamisus platani, Sycamore leaf beetle
- Nicrophorus orbicollis, Roundneck Sexton Beetle
- Niptus hololeucus, Ptinus hololeucus Faldermann, 1836;Golden spider beetle
- Nitidulidae, Sap beetles
- Nodonota puncticollis, Rose leaf beetle
- Nomius pygameus, Stink beetle
- Nosodendridae, Wounded-tree beetles
- Noteridae, Burrowing water beetles
- Octotoma scabripennis, Lantana leaf beetle
- Oedemeridae, False blister beetles
- Onitis alexis, Bronze Dung Beetle
- Onitis viridulus, Emerald Dung Beetle
- Onthophagus australis, Southern Dung Beetle;Onthophagus cupreoviridis Blanchard, 1846
- Onthophagus binodis, Humpbacked Dung Beetle
- Onthophagus consentaneus, Common Northern Dung Beetle;Onthophagus granulatus Macleay, 1864
- Onthophagus ferox, Western Dung Beetle
- Onthophagus gazella, Brown dung beetle
- Onthophagus granulatus, Granulose Dung Beetle
- Onthophagus mniszechi, Threehorned Dung Beetle
- Onthophagus nigriventris, Coastal Dung Beetle;Onthophagus blanchardi nigriventris d'Orbigny, 1902
- Onthophagus pentacanthus, Fivehorned Dung Beetle
- Onthophagus sagittarius, Sri Lankan Dung Beetle;Scarabaeus sagittarius Fabricius, 1781
- Onthophagus taurus, Bullhorned Dung Beetle;Scarabaeus taurus Schreber, 1759
- Orsodacnidae, Orsodacnid Leaf Beetles
- Orthoperidae, Minute fungus beetles
- Orthorhinus cylindrirostris, Elephant Beetle;Elephant Weevil;Rhynchaenus cylindrirostris Fabricius, 1775;Curculio innubus Herbst, 1795;Orthorhinus euchromus Fairmaire, 1883;Orthorhinus longimanus Boisduval, 1835;Orthorhinus patruelis Pascoe, 1885;Orthorhinus simulans Boheman, 1835;Orthorhinus tenellus Pascoe, 1873;Orthorhinus vagus Olliff, 1889;Curculio cylindrirostris Fabricius, 1775
- Orthotomicus erosus, Mediterranean Pine Engraver Beetle
- Oryzaephilus mercator, Silvanus mercator Fauvel, 1889;Merchant grain beetle
- Oryzaephilus surinamensis, Dermestes surinamensis Linnaeus, 1758;Sawtoothed grain beetle
- Ostomidae, Bark-gnawing beetles
- Othniidae, False tiger beetles
- Otiorhynchus cribricollis, Apple Weevil;Curculio Beetle;Cribrate weevil
- Otiorhynchus ligustici, Alfalfa snout beetle
- Oulema melanopus, Cereal leaf beetle
- Oxyops vitiosus, Melaleuca Snout Beetle;Oxyops vitiosa Pascoe, 1870
- Palorus ratzeburgii, Smalleyed flour beetle
- Palorus subdepressus, Hypophloeus subdepressus Wollaston, 1864;Depressed flour beetle
- Paracalais gibboni, Giant Predatory Click Beetle;Elater gibboni Newman, 1857
- Passalidae, Bess beetles;Patent leather beetles
- Passandridae, Parasitic Flat Bark Beetles
- Pedilidae, Pedilid beetles
- Pelidnota punctata, Grapevine beetle
- Pelororhinus perdix, Strawberry Beetle;Strawberry Weevil;Rhinaria perdix Pascoe, 1873
- Perothopidae, Perothopid beetles
- Phaedon viridus, Watercress leaf beetle
- Phalacridae, Shining flower beetles
- Phalacrognathus muelleri, King Stag Beetle;Phalacrognathus westwoodi Shipp, 1893;Lamprima muelleri Macleay, 1885
- Phalacrus politus, Smut beetle
- Phengodidae, Glow-worms;Glowworm beetles
- Phloeosinus cupressi, Cypress Bark Beetle
- Phloeosinus punctatus, Western cedar bark beetle
- Phloeotribus liminaris, Peach bark beetle
- Phyllotreta armoraciae, Horseradish flea beetle
- Phyllotreta pusilla, Western black flea beetle
- Phyllotreta ramosa, Western striped flea beetle
- Phyllotreta striolata, Striped flea beetle
- Plagiodera versicolora, Imported willow leaf beetle
- Platypus froggatti, Large Ambrosia Beetle;Platypus pseudoopacus Schedl, 1936
- Polyphylla decemlineata, Tenlined June beetle
- Poneridia semipullata, Figleaf Beetle;Galleruca semipullata Clark, 1864
- Popillia japonica, Japanese beetle;Japanese Beetle
- Propyleae quatuordecimpunctata, Fourteen-spotted lady beetle;Fourteen-spotted ladybug;Propylea quatuordecimpunctata Mulsant, 1846;Propylea quatuorodecimpunctata
- Protaetia fusca, Mottled Flower Scarab;Protaetia mandarinea Burmeister, 1842;Cetonia fusca Herbst, 1790;Mottled flower scarab;Mango flower beetle
- Pselaphidae, Short-winged mold beetles
- Psephenidae, Water-penny beetles
- Psylliodes punctulata, Hop flea beetle
- Psyllobora vigintimaculata, Twenty-spotted lady beetle;Twenty-spotted ladybug
- Ptiliidae, Feather-winged beetles
- Ptilodactylidae, Ptilodactylid beetles;Toe-winged beetles
- Ptinidae, Spider beetles
- Ptinus clavipes, Brown spider beetle
- Ptinus fur, Cerambyx fur Linnaeus, 1758;Whitemarked spider beetle
- Ptinus ocellus, Australian spider beetle
- Ptinus villiger, Hairy spider beetle
- Pyrochroidae, Fire-colored beetles
- Pyrrhalta cavicollis, Cherry leaf beetle
- Pyrrhalta decora_carbo, Pacific willow leaf beetle
- Pyrrhalta decora_decora, Gray willow leaf beetle
- Pyrrhalta luteola, Elm leaf beetle
- Pyrrhalta viburni, Viburnum leaf beetle
- Pythidae, Dead Log Beetles
- Rhipiceridae, Cedar beetles;Cicada parasite beetles
- Rhizophagidae, Root-eating beetles
- Rhychophoridae, Billbugs, Grain weevils,Braod-nosed bark beetles
- Rhynchitidae, Tooth-nosed snout beetle
- Rhysodidae, Wrinkled bark beetles
- Rhyssonotus nebulosus, Brown Stag Beetle;Lucanus foveolatus Thunberg, 1806;Lucanus nebulosus Kirby, 1818
- Rhyzobius ventralis, Black Lady Beetle;Gumtree Scale Ladybird;Rhizobius ventralis Erichson, 1842;Scymnus halli Broun, 1914;Scymnus restitutor Sharp, 1889;Scymnus ventralis Erichson, 1842;Black lady beetle;Black ladybug
- Ripiphoridae, Wedge-shaped beetles;Wedge-shaped Beetles;Rhipiphoridae
- Rodolia cardinalis, Vedalia cardinalis Mulsant, 1850;Vedalia;Vedalia beetle
- Salpingidae, Narrow-wasted bark beetles;Narrow-waisted Bark Beetles
- Scaphidiidae, Shining fungus beetles
- Scarabaeidae, Scarab beetles;Scarabs;Dung beetles;Flower beetles;Rain beetles;Tumblebugs;Scarab Beetles
- Scirtes, Water beetles
- Scirtidae, Marsh beetles
- Scolytidae, Bark or Engraver beetles,Ambrosia or Timber beetles;Ambrosia beetles;Bark beetles;Engrave beetles
- Scolytus intricatus, European Oak Bark Beetle
- Scolytus multistriatus, Elm Bark Beetle;Ips multistriatus Marsham, 1802;Smaller European elm bark beetle
- Scolytus quadrispinosus, Hickory bark beetle
- Scydmaenidae, Antlike stone beetles;Ant-like Stone Beetles
- Scymnodes lividigaster, Yellow-shouldered lady beetle;Yellow-shouldered ladybug
- Silphidae, Carrion beetles;Carrion Beetles
- Silvanidae, Flat grain beetles;Silvanid flat bark beetles
- Sinoxylon conigerum, Conifer auger beetle
- Sphaeriidae, Minute bog beetles
- Sphaeritidae, False clown beetles
- Sphindidae, Dry-fungus beetles
- Staphylinidae, Rove beetles
- Stegobium paniceum, Dermestes paniceus Linnaeus, 1758;Drugstore beetle
- Stelidota geminata, Strawberry sap beetle
- Stenolophus lecontei, Seedcorn beetle
- Systena blanda, Palestriped flea beetle
- Systena elongata, Elongate flea beetle
- Tanystoma maculicolle, Tule beetle
- Telegeusidae, Telegeusid beetles
- Tenebrionidae, Darkling beetles
- Tetraopes tetrophthalmus, Red milkweed beetle
- Tetratomidae, Polypore Fungus Beetles
- Thes bergrothi, Ridgewinged fungus beetle
- Throscidae, Throscid beetles;False metallic wood-boring beetles
- Thylodrias contractus, Odd Beetle;Hospitopterus efflatouni Pic, 1921;Ignotus aenigmaticus Slosson, 1903;Odd beetle
- Tomicus minor, Lesser Pine Shoot Beetle
- Tomicus piniperda, Pine Shoot Beetle
- Tribolium audax, American black flour beetle
- Tribolium castaneum, Dermestes navalis Fabricius, 1775;Ips testaceus Fabricius, 1798;Tenebrio bifoveolatus Duftschmid, 1812;Tribolium ferrugineum auctt;Tribolium rubens Castelnau, 1840;Colydium castaneum Herbst, 1797;Rust-red flour beetle;Red flour beetle
- Tribolium confusum, Confused flour beetle
- Trigonogenius globulum, Globular spider beetle
- Trioplognathus griseopilosus, Grey Christmas Beetle;Anoplognathus antiquus Arrow, 1919;Anoplognathus griseopilosus Ohaus, 1901
- Trogidae, Hide or skin beetles
- Trogoderma granarium, Khapra beetle;Khapra Beetle;Escarabajo Khapra
- Trogoderma variabile, Trogoderma parabile Beal, 1954;Trogoderma persica Pic, 1914;Trogoderma scabripennis Casey, 1916;Trogoderma versicolor turkestanicum Pic, 1914;Warehouse beetle
- Trogossitidae, Bark-gnawing Beetles;Bark-gnawing beetles;Cadelles
- Trypodendron lineatum, Striped ambrosia beetle
- Trypophloeus striatulua, Willow bark beetle
- Typhaea stercorea, Dermestes stercorea Linnaeus, 1758;Dermestes fumata Linnaeus, 1767;Hairy fungus beetle
- Typophorus nigritus viridicyaneus, Sweetpotato leaf beetle
- Ulochaetes leoninus, Lion beetle
- Xanthogaleruca luteola, Elm Leaf Beetle;Chrysomela xanthomelaena Schrank, 1781;Crioceris calmariensis Fabricius, 1775;Galerica ulmi Geoffroy, 1785;Galleruca crataegi Joannis, 1866;Gallleruca gelatinariae Fabricius, 1801;Chrysomela luteola Müller, 1766
- Xenocnema spinipes, Broad-nosed Kauri Weevil;Spined Log Beetle
- Xyleborus ferrugineus, Bostrichus ferrugineus Fabricius, 1801;Scolytid beetle
- Xyleborus spp, Bark Beetles
- Xylopsocus capucinus, Apate capucinus Fabricius, 1781;False powderpost beetle
- Xyloryctes jamaicensis, Rhinoceros beetle
- Xylosandrus crassiusculus, Dryocoetes bengalensis Stebbing, 1908;Xyleborus declivigranulatus Schedl, 1936;Xyleborus ebriosus Niisima, 1909;Xyleborus mascarenus Hagedorn, 1908;Xyleborus okoumeensis Schedl, 1935;Xyleborus semigranosus Blandford, 1896;Xyleborus semiopacus Eichhoff, 1878;Phloeotrogus crassiusculus Motschulsky, 1866;Asian ambrosia beetle;Granulate ambrosia beetle
- Xylotrechus altaicus, Altao Longhorn Beetle
- Xylotrupes gideon, Elephant Beetle;Scarabaeus gideon Linnaeus, 1767
- Zopheridae, Ironclad Beetles
- Zygogramma exclamationis, Sunflower beetle
|