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CISAC has compiled the list below of over 1,700 species known to be invasive in California or a potential threat for introduction to the state. Please use the comment form below to let us know about: taxa that should be added or removed; species information that you would change; and species that you think should be a high priority for having a scorecard completed (choose Review Scorecards to see the list of scorecards already drafted). Make sure to click Save. Previous comments are displayed at the bottom of the page.

Download Species List (.csv) (to open in a Spreadsheet program)
This data download is provided to aid in the review of the draft invasive species list. We discourage other use of this data until it has been revised and finalized.

Scientific Name Common Namesort icon Type Subtype Extent Risk of Introduction First Source
Lymantria dispar Gypsy moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Digitaria sanguinalis hairy crabgrass plant grass widespread n/a (already in CA) Weeds of CA
Fatoua villosa hairy crabwees plant herbaceous limited n/a (already in CA) CDFA
Vicia villosa hairy vetch plant herbaceous widespread n/a (already in CA) Weeds of CA
Cardaria pubescens hairy whitetop plant herbaceous limited n/a (already in CA) CDFA
Epilobium hirsutum hairy willow herb plant herbaceous not present high WA Weed List
Nilotaspis halli Hall scale arthropod scale, aphid not present high CDFA (reg. A)
Halogeton glomeratus halogeton plant herbaceous limited n/a (already in CA) CDFA
Phalaris aquatica hardinggrass plant grass widespread n/a (already in CA) Cal-IPC list
Peganum harmala harmel plant herbaceous not present high No list
Helicoverpa hawaiiensis Hawaiian bud moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Euryops multifidus hawk's eye plant woody not present high AZ Weed List
Picris hieracioides hawkweed oxtongue plant herbaceous not present moderate WA Weed List
Crataegus monogyna hawthorn plant woody limited n/a (already in CA) Cal-IPC list
Curculio nucum hazelnut weevil arthropod beetle not present high USDA Plant/Pest
Solanum cardiophyllum heartleaf nightshade plant herbaceous not present low CDFA
Monochoria vaginalis heartshape false pickerelweed plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Ehrlichia ruminantium Heartwater; cowdriosis disease bacterium not present moderate Merck Vet Manual
Cynosurus echinatus hedgehog dogtailgrass plant grass widespread n/a (already in CA) Cal-IPC list
Torilis arvensis hedgeparsley plant herbaceous widespread n/a (already in CA) Cal-IPC list
Numida meleagris Helmeted guineafowl vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Lamium amplexicaule henbit deadnettle plant herbaceous widespread n/a (already in CA) Weeds of CA
Paramyxovirus hv Hendra Virus disease virus VALUE REQUIRED VALUE REQUIRED CDC
Geranium robertianum Herb-robert plant herbaceous limited n/a (already in CA) Med. plants list
Clavaspis herculeana herculeana scale arthropod scale, aphid not present high CDFA (reg. A)
Unknown pathogenic virus 10 Hibiscus Leaf Curl Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Cydia caryana hickory shuckworm arthropod butterfly, moth not present moderate CDFA (reg. A)
Conotrachelus spp. hidden snout weevils arthropod beetle not present moderate USDA Plant/Pest
Malva sylvestris high mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Influenzavirus hpav Highly Pathogenic Avian Influenza disease virus VALUE REQUIRED VALUE REQUIRED CDFA AHFSS
Gracula religiosa Hill mynah vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Rubus armeniacus Himalaya blackberry plant woody widespread n/a (already in CA) CDFA
Polygonum polystachyum Himalayan knotweed plant herbaceous limited n/a (already in CA) CDFA
Tetragallus himalayensis Himalayan snowcock vertebrate bird VALUE REQUIRED VALUE REQUIRED Harmful U.S. NIS
Hemitragus jemlahicus Himalayan tahr vertebrate mammal VALUE REQUIRED n/a (already in CA) DFG Code 2118
Anolis chlorocyanus Hispaniolan green anole vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Cardaria draba hoary cress plant herbaceous widespread n/a (already in CA) CDFA
Solanum physalifolium hoe nightshade plant herbaceous widespread n/a (already in CA) Weeds of CA
Phytomyza ilicis holly leafminer arthropod fly limited n/a (already in CA) CDFA (reg. B)
Dynaspidiotus britannicus holly scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Acarapis woodi honey bee tracheal mite arthropod widespread n/a (already in CA) USDA Plant/Pest
Gleditsia triacanthus honey locust plant woody limited n/a (already in CA) Med. plants list
Tropilaelaps clareae honeybee mite arthropod mite not present high USDA Plant/Pest
Aphtae epizooticae Hoof and mouth disease disease virus not present moderate CDFA AHFSS
Unknown pathogenic virus 11 Horsechestnut Variegation Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Unknown pathogenic virus 12 Horsechestnut Yellow Mosaic Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Begomovius hgymv Horsegram Yellow Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Cynoglossum officinale houndstongue plant herbaceous limited n/a (already in CA) Cal-IPC list
Mus musculus House mouse vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Passer domesticus House sparrow vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Candidatus Liberibacter sp. Huanglongbing Disease of Citrus disease bacterium not present high USDA Plant/Pest
Candidatus Liberibacter africanus Huanglongbing disease of citrus-African strain disease bacterium not present low USDA Plant/Pest
Candidatus Liberibacter americanus Huanglongbing disease of Citrus-Americas Strain disease bacterium not present moderate USDA Plant/Pest
Candidatus Liberibacter asiaticus Huanglongbing disease of Citrus-Asian Strain disease bacterium not present high USDA Plant/Pest
Solenopsis richteri X Solenopsis invicta hybrid hybrid fire ant arthropod bee, wasp not present high CDFA (reg. A)
Hydrilla verticillata hydrilla plant herbaceous limited n/a (already in CA) CDFA
Lythrum hyssopifolium hyssop loosestrife plant herbaceous widespread n/a (already in CA) Cal-IPC list
Centaurea iberica Iberian starthistle plant herbaceous limited n/a (already in CA) CDFA
Carpobrotus edulis iceplant plant herbaceous widespread n/a (already in CA) Cal-IPC list
Onopordum illyricum Illyrian thistle plant herbaceous limited n/a (already in CA) CDFA
Pseudococcus importatus imported mealybug arthropod scale, aphid not present moderate CDFA (reg. A)
Mandarivirus icrsv Indian citrus ringspot virus disease virus not present low NAPPO
Pecluvirus ipcv Indian Peanut Clump Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Euscepes postfasciatus Indian sweetpotato weevil arthropod beetle not present high USDA Plant/Pest
Carausius morosus Indian walking stick arthropod stick insect limited n/a (already in CA) CDFA (reg. B)
Ceroplastes ceriferus Indian wax scale arthropod scale, aphid not present high CDFA (reg. A)
Cuon alpinus Indian wild dog / Dhole vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Amorpha fruticosa indigobush plant woody limited n/a (already in CA) WA Weed List
Hemidactylus garnotti Indo-Pacific gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Hemiphyllodactylus typus Indo-Pacific tree gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Luteovirus isdv Indonesian Soybean Dwarf Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Brevidensovirus IHHNV Infectious Hypodermal and Hematopoietic Necrosis Virus of fish disease virus VALUE REQUIRED VALUE REQUIRED No list
Isavirus isa Infectious Salmon Isavirus Anemia (ISA) disease virus VALUE REQUIRED VALUE REQUIRED No list
Syngrapha epigaea inscribed looper moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Diprion similis introduced pine sawfly arthropod bee, wasp not present high CDFA (reg. A)
Nucleorhabdovirus immv Iranian Maize Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED No list
Bactrocera irvingiae irvinge fruit fly arthropod fly not present low CDFA (reg. A)
Sphaeroma quoyanum Isopod invertebrate crustaceans and tunicates VALUE REQUIRED VALUE REQUIRED NISIC
Lolium multiflorum Italian ryegrass plant grass widespread n/a (already in CA) Cal-IPC list
Carduus pycnocephalus Italian thistle plant herbaceous widespread n/a (already in CA) CDFA
Podarcis sicula Italian wall lizard vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Rottboellia cochinchinensis itchgrass plant grass not present moderate USDA Plant/Pest
Chamaeleo jacksonii Jackson’s chameleon vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Felis yagouaroundi Jaguarundi vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Anolis garmani Jamaican giant anole vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Popillia japonica Japanese beetle arthropod beetle not present high CDFA (reg. A)
Bromus japonicus Japanese brome plant grass widespread n/a (already in CA) Cal-IPC list
Cettia diphone Japanese bush warbler vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Cuscuta japonica Japanese dodder plant herbaceous limited n/a (already in CA) CDFA
Zostera japonica Japanese eelgrass plant herbaceous limited n/a (already in CA) CDFA
Flavivirus jev Japanese Encephalitis Virus disease virus VALUE REQUIRED VALUE REQUIRED CIDRAP
Polygonum cuspidatum Japanese knotweed plant woody limited n/a (already in CA) CDFA
Venerupsis phillipinarus Japanese littleneck clam invertebrate aquatic mollusk, marine limited n/a (already in CA) Exoticsguide
Macaca fuscata Japanese macaque vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Cirsium japonicum Japanese thistle plant herbaceous not present low CDFA
Zosterops japonica Japanese White-eye vertebrate bird not present high Cal Code 14:671
Glandirana rugosa Japanese wrinkled frog vertebrate amphibian not present moderate Witmer et al
Jasmine Variegation Agents Jasmine Variegation Agents disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Padda oryzivora Java sparrow vertebrate bird not present low Lacey Act
Acrochordus javanicus Javan filesnake vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List