| Amonostherium hymenocleae Cockerell, 1899 | |
| Amonostherium lichtensioides Cockerell, 1897 | Sagebrush Mealybug |
| Anisococcus abnormalis Mckenzie, 1964 | Abnormal mealybug |
| Anisococcus adenostomae Ferris, 1925 | Chamise mealybug |
| Anisococcus crawii Coquillett, 1889 | White sage mealybug |
| Anisococcus didymus Ferris, 1950 | Large-celled mealybug |
| Anisococcus ephedrae Coquillett, 1890 | Ephedra mealybug |
| Anisococcus imperialis Mckenzie, 1967 | Imperial mealybug |
| Anisococcus oregonensis Ferris, 1950 | Nest mealybug |
| Anisococcus quercus Ehrhorn, 1900 | Interior live oak mealybug |
| Anthelococcus simondsi Mckenzie, 1964 | Simonds' mealybug |
| Antonina boutelouae (Parrott, 1900) | ⇒ Antoninoides boutelouae Parrott, 1900 |
| Antonina crawi Cockerell, 1900 | Cottony Bamboo Mealybug |
| Antonina dakotensis (Kosztarab & ..., 1969) | ⇒ Apezococcus idiastes Ferris, 1955 |
| Antonina graminis (Maskell, 1897) | ⇒ Antoninoides parrotti Cockerell in..., 1903 |
| Antonina nortoni (Parrott & Co..., 1899) | ⇒ Antoninoides nortoni Parrott & Co..., 1899 |
| Antonina pretiosa Ferris, 1953 | Noxious Bamboo Mealybug |
| Antoninoides boutelouae Parrott, 1900 | |
| Antoninoides nortoni Parrott & Co..., 1899 | |
| Antoninoides parrotti Cockerell in..., 1903 | Felted grass coccid |
| Balanococcus diminutus Leonardi, 1918 | Lax mealybug |
| Brevennia rehi Lindinger, 1943 | Rice Mealybug |
| Cataenococcus formicarii Ehrhorn, 1899 | |
| Cataenococcus olivaceus Cockerell, 1896 | Olive-brown mealybug |
| Cataenococcus phoradendri Cockerell, 1912 | Mistletoe mealybug |
| Chnaurococcus trifolii Ferris, 1953 | Clover root mealybug |
| Chnaurococcus villosa Ehrhorn, 1899 | Woolly oak mealybug |
| Chorizococcus abortivus Mckenzie, 1967 | Abortive mealybug |
| Chorizococcus abroniae Mckenzie, 1960 | Abronia mealybug |
| Chorizococcus altoarcticus Richards, 1964 | High arctic mealybug |
| Chorizococcus aphyllonis Cockerell, 1895 | |
| Chorizococcus californicus Mckenzie, 1964 | Purple mealybug |
| Chorizococcus coniculus Miller & McK..., 1971 | Conicalseta mealybug |
| Chorizococcus coxindex Mckenzie, 1967 | Coxa mealybug |
| Chorizococcus dentatus Lobdell, 1930 | Yarrow mealybug |
| Chorizococcus fistulosus Mckenzie, 1967 | Porous mealybug |
| Chorizococcus indecisus (Cockerell, 1901) | ⇒ Spilococcus halli McKenzie & W..., 1965 |
| Chorizococcus interruptus Mckenzie, 1964 | Interrupted mealybug |
| Chorizococcus irishi Cockerell, 1900 | |
| Chorizococcus neomexicanus Tinsley, 1898 | |
| Chorizococcus penultimatus Mckenzie, 1967 | Penultimate mealybug |
| Chorizococcus polyporus Mckenzie, 1961 | Many-pored mealybug |
| Chorizococcus psoraleae Mckenzie, 1960 | California tea mealybug |
| Chorizococcus rostellum Lobdell, 1930 | Bermuda Grass Mealybug |
| Chorizococcus senarius Mckenzie, 1967 | Short-antennae mealybug |
| Chorizococcus shaferi Hollinger, 1917 | |
| Chorizococcus snellingi Mckenzie, 1967 | Snelling mealybug |
| Chorizococcus variabilis Mckenzie, 1964 | |
| Chorizococcus wilkeyi Mckenzie, 1960 | Wilkey mealybug |
| Chorizococcus wilsoni Mckenzie, 1961 | Wilson mealybug |
| Chorizococcus yuccae Mckenzie, 1961 | Small yucca mealybug |
| Circaputo hirsutus Mckenzie, 1962 | Hairy Circaputo mealybug |
| Crisicoccus azaleae Tinsley, 1898 | Azalea mealybug |
| Crisicoccus pini Kuwana, 1902 | Japanese pine mealybug |
| Cryptoripersia arizonensis Ehrhorn, 1899 | Felt-sac mealybug |
| Cryptoripersia kingii Cockerell, 1896 | |
| Cryptoripersia leucocystis Bueker, 1931 | |
| Cryptoripersia myrmecophila Maskell, 1897 | |
| Cryptoripersia trichura Cockerell, 1901 | Anal-seta mealybug |
| Cryptoripersia tubulata Mckenzie, 1964 | Tubulate mealybug |
| Cucullococcus vaccinii Ferris, 1941 | Bilberry mealybug |
| Discococcus caricis Ferris, 1953 | Sedge mealybug |
| Discococcus flabellatus Ferris, 1953 | Six-circuli mealybug |
| Discococcus graminis Ferris, 1918 | Ferris grass mealybug |
| Discococcus hopi Ferris, 1953 | Hopi mealybug |
| Discococcus simplex Ferris, 1953 | Simple mealybug |
| Discococcus spectabilis Mckenzie, 1961 | Notable mealybug |
| Distichlicoccus alkalinus Cockerell, 1902 | |
| Distichlicoccus arundinis Mckenzie, 1967 | Arundo mealybug |
| Distichlicoccus californicus Ehrhorn, 1911 | Yellow mealybug |
| Distichlicoccus fontanus Ferris, 1950 | |
| Distichlicoccus megacirculus Mckenzie, 1967 | Large-circulus mealybug |
| Distichlicoccus salinus Cockerell, 1902 | Salt grass mealybug |
| Dysmicoccus aciculus Ferris, 1950 | Comstock mealybug |
| Dysmicoccus angustus Ezzat & McCo..., 1956 | Narrow mealybug |
| Dysmicoccus aurantia (Ferris, 1953) | ⇒ Dysmicoccus aurantius Cockerell, 1901 |
| Dysmicoccus aurantius Cockerell, 1901 | Orange-colored mealybug |
| Dysmicoccus boninsis Kuwana, 1909 | Citrophilus mealybug |
| Dysmicoccus brevipes Cockerell, 1893 | Chanchito Blanca De La Pina |
| Dysmicoccus desertorum Mckenzie, 1962 | Desert Dysmicoccus mealybug |
| Dysmicoccus difficilis Lobdell, 1930 | |
| Dysmicoccus diodium McConnell, 1941 | Buttonweed mealybug |
| Dysmicoccus fimbriatulus Cockerell & ..., 1902 | |
| Dysmicoccus junceus McConnell, 1941 | Juncus mealybug |
| Dysmicoccus lasii Cockerell, 1896 | Ant-nest mealybug |
| Dysmicoccus mackenziei Beardsley, 1965 | Mckenzie Mealybug |
| Dysmicoccus mcdanieli Hollinger, 1917 | |
| Dysmicoccus merrilli Ferris, 1953 | |
| Dysmicoccus morrisoni Hollinger, 1917 | Morrison mealybug |
| Dysmicoccus obesus Lobdell, 1930 | Pine mealybug |
| Dysmicoccus patulae Rau, 1938 | |
| Dysmicoccus pinicolus Mckenzie, 1964 | McKenzie pine mealybug |
| Dysmicoccus polymeris Miller & McK..., 1971 | Multilocular mealybug |
| Dysmicoccus quercicolus Ferris, 1918 | Ferris oak mealybug |
| Dysmicoccus racemus Mckenzie, 1967 | Cluster mealybug |
| Dysmicoccus roseotinctus Cockerell & ..., 1901 | Rose-colored mealybug |
| Dysmicoccus ryani Coquillett, 1889 | Cypress mealybug |
| Dysmicoccus salmonacea Cockerell, 1901 | |
| Dysmicoccus texensis Tinsley, 1900 | |
| Dysmicoccus timberlakei Cockerell, 1916 | Timberlake mealybug |
| Dysmicoccus vacuatus Mckenzie, 1967 | Small mealybug |
| Dysmicoccus wistariae Green, 1923 | Taxus Mealybug |
| Ehrhornia cupressi Ehrhorn, 1911 | Cottony cypress scale |
| Eurycoccus blanchardi King & Cocke..., 1897 | |
| Eurycoccus blanchardii King & Cocke..., 1897 | Variable mealybug |
| Eurycoccus copallinae Ferris, 1953 | |
| Eurycoccus jessica (Ferris, 1950) | ⇒ Eurycoccus blanchardii King & Cocke..., 1897 |
| Eurycoccus yuccae Ferris, 1953 | |
| Ferrisia claviseta Lobdell, 1930 | |
| Ferrisia floridana Ferris, 1953 | |
| Ferrisia lobdellae (Varshney, 1982) | ⇒ Ferrisia setosa Lobdell, 1930 |
| Ferrisia quaintancii Tinsley, 1898 | |
| Ferrisia setosa Lobdell, 1930 | |
| Ferrisia virgatus Cockerell, 1893 | |
| Geococcus coffeae Green, 1933 | Brown Scale |
| Heliococcus adenostomae Mckenzie, 1960 | Adenostoma heliococcus mealybug |
| Heliococcus atriplicis Mckenzie, 1964 | Atriplex mealybug |
| Heliococcus clemente Miller, 1974 | |
| Heliococcus deserticola Miller, 1974 | |
| Heliococcus insignis Lobdell, 1930 | |
| Heliococcus osborni Sanders, 1902 | Osborn mealybug |
| Heliococcus stachyos Ehrhorn, 1900 | Betony mealybug |
| Heliococcus wheeleri King, 1902 | |
| Heterococcus arenae Ferris, 1918 | |
| Heterococcus nudus Green, 1926 | Naked Grass-mealybug |
| Heterococcus raui Miller, 1975 | Rau mealybug |
| Humococcus atriplicis Ferris, 1953 | Ferris Atriplex mealybug |
| Humococcus caritus Mckenzie, 1960 | Salt grass mealybug |
| Humococcus ceraricus Mckenzie, 1964 | Black-greasewood mealybug |
| Humococcus dasychloae Ferris, 1953 | |
| Humococcus hilariae Ferris, 1919 | Hilaria mealybug |
| Humococcus inornatus Mckenzie, 1960 | Inornate mealybug |
| Humococcus muhlenbergiae Ferris, 1953 | |
| Humococcus porterae Cockerell, 1901 | |
| Hypogeococcus barbarae Rau, 1938 | Rau mealybug |
| Hypogeococcus hamoni Miller, 1983 | |
| Hypogeococcus margaretae Miller, 1983 | |
| Hypogeococcus spinosus Ferris, 1953 | Spinose mealybug |
| Lacombia dactyloni Bodenheimer, 1943 | Ground mealybug |
| Misericoccus arenaria Doane & Stei..., 1927 | |
| Nipaecoccus aurilanatus Maskell, 1890 | Araucaria mealybug |
| Nipaecoccus ledi Cockerell, 1911 | |
| Nipaecoccus nipae Maskell, 1893 | Avocado mealybug |
| Oracella acutus Lobdell, 1930 | |
| Paludicoccus distichlium Kuwana, 1902 | Kuwana brown mealybug |
| Paludicoccus disticlium (Ferris, 1918) | ⇒ Paludicoccus distichlium Kuwana, 1902 |
| Paracoccus juniperi Ehrhorn, 1906 | Juniper mealybug |
| Paracoccus reducta Ferris, 1953 | |
| Paracoccus solani Ezzat & McCo..., 1956 | Mealybug |
| Paracoccus townsendi Cockerell, 1893 | |
| Paradoxococcus mcdanielli Mckenzie, 1962 | |
| Peliococcus balteatus Green, 1928 | Girdled mealybug |
| Peliococcus saratogensis (Ferris, 1950) | ⇒ Peliococcus balteatus Green, 1928 |
| Peliococcus serratus Ferris, 1925 | Beech mealybug |
| Phenacoccus acericola King, 1902 | Maple false scale |
| Phenacoccus aceris Signoret, 1875 | Apple mealybug |
| Phenacoccus alleni Mckenzie, 1964 | Allen mealybug |
| Phenacoccus americanae King & Cocke..., 1897 | |
| Phenacoccus artemisiae Ehrhorn, 1900 | Artemisia mealybug |
| Phenacoccus cajonensis Mckenzie, 1967 | Cajon mealybug |
| Phenacoccus capensis Ferris, 1950 | |
| Phenacoccus celtisifoliae Hollinger, 1917 | Celtis mealybug |
| Phenacoccus colemani Ehrhorn, 1906 | Coleman mealybug |
| Phenacoccus dearnessi King, 1901 | Elm leaf mealybug |
| Phenacoccus defectus Ferris, 1950 | Imperfect mealybug |
| Phenacoccus destitutus Mckenzie, 1967 | Destitute mealybug |
| Phenacoccus dicoriae Mckenzie, 1961 | Dicoria mealybug |
| Phenacoccus echeveriae Mckenzie, 1960 | Echeveria mealybug |
| Phenacoccus eremicus Ferris, 1950 | Eremicus mealybug |
| Phenacoccus eriogoni Ferris, 1918 | Cerarii mealybug |
| Phenacoccus eschscholtziae Mckenzie, 1961 | California Poppy Mealybug |
| Phenacoccus flaveola Cockerell, 1896 | |
| Phenacoccus giganteus Mckenzie, 1964 | Giant mealybug |
| Phenacoccus gossypii (Townsend & C..., 1898) | ⇒ Phenacoccus madeirensis Green, 1923 |
| Phenacoccus graminicola Leonardi, 1908 | Ryegrass Mealybug |
| Phenacoccus grandicarpus Hollinger, 1917 | |
| Phenacoccus helianthi Cockerell, 1893 | Sunflower mealybug |
| Phenacoccus hurdi Mckenzie, 1964 | Hurd phenacoccus mealybug |
| Phenacoccus infernalis Mckenzie, 1962 | Infernal mealybug |
| Phenacoccus lotearum Mckenzie, 1960 | Lotus mealybug |
| Phenacoccus lycii Ferris, 1919 | Desert thorn mealybug |
| Phenacoccus madeirensis Green, 1923 | Madeira mealybug |
| Phenacoccus megaulus Mckenzie, 1967 | Large-duct mealybug |
| Phenacoccus minimus Tinsley, 1898 | Minimus mealybug |
| Phenacoccus multisetosus Mckenzie, 1967 | Multiple-setae mealybug |
| Phenacoccus pauperatus Ferris, 1950 | Pauper mealybug |
| Phenacoccus rubivorus Cockerell, 1901 | False puto mealybug |
| Phenacoccus solani Ferris, 1918 | Soft scale |
| Phenacoccus solenopsis Tinsley, 1898 | Cotton mealybug |
| Phenacoccus sphaeralceae Williams, 1987 | |
| Phenacoccus wilmattae Cockerell, 1901 | |
| Planococcus citri (Risso, 1813) | ⇒ Planococcus lilacinus Cockerell, 1905 |
| Planococcus kraunhiae Kuwana, 1902 | False scale insect |
| Planococcus lilacinus Cockerell, 1905 | Cacao mealybug |
| Plotococcus eugeniae Miller & Denno, 1977 | |
| Pseudantonina arundinariae McConnell, 1941 | Arundinaria mealybug |
| Pseudantonina giganticoxa Lobdell, 1930 | |
| Pseudantonina texana Ferris, 1953 | |
| Pseudococcus aberrans (Mckenzie, 1962) | ⇒ Trionymus aberrans aberrans Goux, 1938 |
| Pseudococcus affinis (Maskell, 1894) | ⇒ Pseudococcus viburni Signoret, 1875 |
| Pseudococcus beardsleyi Miller & McK..., 1971 | |
| Pseudococcus calceolariae (Maskell, 1879) | ⇒ Dysmicoccus boninsis Kuwana, 1909 |
| Pseudococcus comstocki (Kuwana, 1902) | ⇒ Dysmicoccus aciculus Ferris, 1950 |
| Pseudococcus cryptus Hempel, 1918 | Citriculus mealybug |
| Pseudococcus dentatus (Lobdell, 1930) | ⇒ Chorizococcus dentatus Lobdell, 1930 |
| Pseudococcus dispar Mckenzie, 1962 | Dispar mealybug |
| Pseudococcus diversus Mckenzie, 1964 | Diverse mealybug |
| Pseudococcus importatus Mckenzie, 1960 | Imported mealybug |
| Pseudococcus kingii Cockerell, 1897 | |
| Pseudococcus longisetosus Ferris, 1918 | Long-setae mealybug |
| Pseudococcus longispinus Targioni-Toz..., 1867 | Cotonet Longispino |
| Pseudococcus macswaini Mckenzie, 1962 | |
| Pseudococcus maritimus Ehrhorn, 1900 | American grape mealybug |
| Pseudococcus megasetosus Mckenzie, 1967 | Large setae mealybug |
| Pseudococcus microcirculus Mckenzie, 1960 | Orchid Mealybug |
| Pseudococcus neomaritimus Beardsley, 1966 | Comstock mealybug |
| Pseudococcus pertusus Mckenzie, 1967 | Perforated mealybug |
| Pseudococcus prunicolus Mckenzie, 1964 | Prune pseudococcus mealybug |
| Pseudococcus pseudobscurus Mckenzie, 1964 | False obscure mealybug |
| Pseudococcus solani (Cockerell, 1894) | ⇒ Phenacoccus solani Ferris, 1918 |
| Pseudococcus sorghiellus Forbes, 1885 | Trochanter mealybug |
| Pseudococcus sparsus Mckenzie, 1962 | Eastern trochanter mealybug |
| Pseudococcus viburni Signoret, 1875 | Californian mealybug |
| Radicoccus kelloggi (Hambleton, 1946) | ⇒ Rhizoecus kelloggi Ehrhorn & Co..., 1901 |
| Ripersia kingii (Cockerell, 1896) | ⇒ Cryptoripersia kingii Cockerell, 1896 |
| Ripersia myrmecophila (Maskell, 1897) | ⇒ Cryptoripersia myrmecophila Maskell, 1897 |
| Ripersiella bituberculata Mckenzie, 1960 | Bituberculate mealybug |
| Scaptococcus californicus Mckenzie, 1964 | Digger mealybug |
| Scaptococcus milleri Mckenzie, 1967 | Miller sand dune mealybug |
| Spilococcus andersoni Coleman, 1903 | Anderson mealybug |
| Spilococcus atriplicis Cockerell, 1895 | Southern California mealybug |
| Spilococcus ceanothi Mckenzie, 1967 | Squawcarpet mealybug |
| Spilococcus corticosus Mckenzie, 1967 | Bark mealybug |
| Spilococcus eriogoni Ehrhorn, 1899 | Eriogonum mealybug |
| Spilococcus geraniae Rau, 1938 | Geranium mealybug |
| Spilococcus gutierreziae Cockerell, 1896 | Gutierrezia mealybug |
| Spilococcus halli McKenzie & W..., 1965 | Viktorin grass mealybug |
| Spilococcus implicatus Ferris, 1950 | Implicated mealybug |
| Spilococcus keiferi Mckenzie, 1960 | Keifer mealybug |
| Spilococcus larreae Ferris, 1950 | Desert mealybug |
| Spilococcus mamillariae Bouche, 1844 | Cactus mealybug |
| Spilococcus mori Siraiwa, 1938 | |
| Spilococcus nototrichus Miller & McK..., 1971 | Dorsal-spine mealybug |
| Spilococcus parkeri Mckenzie, 1962 | Parker mealybug |
| Spilococcus parvicirculus Mckenzie, 1960 | Franseria mealybug |
| Spilococcus pressus Ferris, 1950 | Pressus mealybug |
| Spilococcus prosopidis Cockerell, 1896 | Mesquite mealybug |
| Spilococcus quercinus Mckenzie, 1962 | Chaparral mealybug |
| Spilococcus sequoiae Coleman, 1901 | Redwood mealybug |
| Spilococcus steeli Cockerell & ..., 1894 | |
| Spilococcus steelii (Ferris, 1950) | ⇒ Spilococcus steeli Cockerell & ..., 1894 |
| Spilococcus ventralis Mckenzie, 1967 | Burro-weed mealybug |
| Stemmatomerinx acircula Howell & Miller, 1976 | |
| Stemmatomerinx adenticulata Howell & Miller, 1976 | |
| Stemmatomerinx aristida Howell & Miller, 1976 | |
| Stemmatomerinx beshearae Howell & Miller, 1976 | |
| Stemmatomerinx decorata Ferris, 1950 | Truncate setae mealybug |
| Syrmococcus pecosensis Ferris, 1953 | |
| Syrmococcus spirapuncta Lobdell, 1930 | |
| Syrmococcus spiropuncta (Ben-Dov, 1994) | ⇒ Syrmococcus spirapuncta Lobdell, 1930 |
| Tridiscus distichlii Ferris, 1918 | Coastal grass mealybug |
| Tridiscus multiorbis Ferris, 1953 | Multiple circulus mealybug |
| Tridiscus sporoboli Cockerell, 1902 | Buffalograss mealybug |
| Trionymus aberrans aberrans Goux, 1938 | |
| Trionymus americana Cockerell, 1899 | |
| Trionymus caricis McConnell, 1941 | Carex mealybug |
| Trionymus cladestinus (Kosztarab & ..., 1995) | ⇒ Trionymus clandestinis McConnell, 1941 |
| Trionymus clandestinis McConnell, 1941 | |
| Trionymus claviger King & Tinsley, 1897 | |
| Trionymus dolus Ferris, 1950 | Dolus mealybug |
| Trionymus festucae (Kuwana, 1901) | ⇒ Trionymus phalaridis Green, 1925 |
| Trionymus frontalis Mckenzie, 1967 | Frontal grass mealybug |
| Trionymus haancheni Mckenzie, 1960 | Haanchen barley mealybug |
| Trionymus idahoensis Miller & McK..., 1971 | |
| Trionymus interjecti Bueker, 1931 | |
| Trionymus magna Cockerell, 1901 | |
| Trionymus mocus Ferris, 1953 | Mocker grass mealybug |
| Trionymus modocensis Ferris, 1953 | Modoc grass mealybug |
| Trionymus mori (Lobdell, 1930) | ⇒ Spilococcus mori Siraiwa, 1938 |
| Trionymus myersi Mckenzie, 1961 | Myers mealybug |
| Trionymus nanus Cockerell, 1905 | |
| Trionymus phalaridis Green, 1925 | Canarygrass mealybug |
| Trionymus quadricirculus Mckenzie, 1967 | Square circulus mealybug |
| Trionymus smithii Essig, 1910 | Smith grass mealybug |
| Trionymus strongylus Miller & McK..., 1971 | |
| Trionymus utahensis Cockerell, 1916 | Utah grass mealybug |
| Trionymus violascens Cockerell, 1913 | Dusky grass mealybug |
| Trionymus winnemucae Mckenzie, 1967 | Winnemuca grass mealybug |
| Vryburgia amaryllidis Bouche, 1837 | Lily Bulb Mealybug |
| Vryburgia brevicruris Mckenzie, 1960 | Short-legged Mealybug |
