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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 Namesort icon Common Name Type Subtype Extent Risk of Introduction First Source
Nepovirus ailv Artichoke Italian Latent Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Neomaskellia bergii sugarcane whitefly arthropod scale, aphid not present high USDA Plant/Pest
Neogobius melanostomus Round goby vertebrate fish not present moderate NISIC
Naupactus xanthographus South American fruit tree weevil arthropod beetle not present moderate USDA Plant/Pest
Naupactus spp. whitefringed beetles arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Naupactus leucoloma whitefringed beetle arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Nasua nasua Coatimundi vertebrate mammal VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Nasua narica White-nosed coati vertebrate mammal VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Nassella trichotoma serrated tussock plant grass not present low USDA Plant/Pest
Nardus stricta matgrass plant grass not present moderate ID Weed List
Nandayus nenday Nanday conure vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Najas minor slender-leaved naiad plant herbaceous not present moderate WA Weed List
n/a Indian citrus ringspot virus n/a Indian citrus ringspot virus disease virus not present VALUE REQUIRED CACASA
n/a Concave gum/blind pocket n/a Concave gum/blind pocket disease virus limited VALUE REQUIRED No list
n/a Citrus viroids n/a Citrus viroids disease virus not present VALUE REQUIRED No list
n/a Citrus vein-enation virus probably Luteovirus n/a Citrus vein-enation virus probably Luteovirus disease virus not present VALUE REQUIRED No list
n/a Citrus psorosis virus n/a Citrus psorosis virus disease virus limited VALUE REQUIRED No list
n/a Citrus leaf blotch virus n/a Citrus leaf blotch virus disease virus not present VALUE REQUIRED No list
n/a Citrus chlorotic dwarf n/a Citrus chlorotic dwarf disease virus not present VALUE REQUIRED APHIS OPIS
Myxobolus (Lentospora) cerebralis Protozoic Whirling disease disease parasitic animal limited n/a (already in CA) National IS Info
mytilus galloprovincialis Mediterranean blue mussel invertebrate aquatic mollusk, marine widespread n/a (already in CA) IMEAC
Myriophyllum spicatum Eurasian watermilfoil plant herbaceous widespread n/a (already in CA) Cal-IPC list
Myriophyllum aquaticum parrotfeather plant herbaceous limited n/a (already in CA) Cal-IPC list
Myosoton aquaticum giant chickweed plant herbaceous not present moderate CDFA
Myosotis latifolia common forget-me-not plant herbaceous limited n/a (already in CA) Cal-IPC list
Myosotella myosotis Mouse-ear marshsnail invertebrate aquatic mollusk, marine limited n/a (already in CA) Exoticsguide
Myoporum laetum myoporum plant woody limited n/a (already in CA) Cal-IPC list
Myocastor coypus Nutria vertebrate mammal limited n/a (already in CA) Cal Code 14:671
Myndus crudus American palm cixiid arthropod scale, aphid not present high CDFA (reg. A)
Mylopharyngodon piceus Black Carp vertebrate fish not present high Cal Code 14:671
Myllocerus undecimpustulatus undatus Sri Lanka weevil arthropod beetle not present moderate CDFA (reg. A)
Myiopsitta monachus Monk parakeet vertebrate bird limited n/a (already in CA) Cal Code 14:671
Mycosphaerella pini Red Band Needle Blight disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Mycosphaerella dearnesii Brown Spot Needle Blight disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Mycoplasma mycoides mycoides Bovine pleuropneumonia disease bacterium not present low Merck Vet Manual
Mycoplasma capricolum capripneumoniae Contagious Bovine Caprine Pleuropneumonia disease bacterium not present low Merck Vet Manual
Mycobacterium bovis Bovine tuberculosis disease bacterium limited n/a (already in CA) Iowa State Univ
Mycetaspis spaerioides armored scale arthropod scale, aphid not present high CDFA (reg. A)
Mya arenaria Soft-shell clam invertebrate aquatic mollusk, marine limited n/a (already in CA) Exoticsguide
Mustela vision American mink vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Mustela putorius European polecat or ferret vertebrate mammal limited n/a (already in CA) Cal Code 14:671
Mustela nivalis Least weasel vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Mustela erminea Stoat vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Musculista senhousia Green bagmussel invertebrate aquatic mollusk, marine limited n/a (already in CA) Exoticsguide
Mus musculus House mouse vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Murdannia keisak marsh dew flower plant herbaceous not present moderate WA Weed List
Mulberry Mosaic Agent Mulberry Mosaic Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Muhlenbergia schreberi nimblewill plant grass limited n/a (already in CA) CDFA
Mountain Ash Variegation Agent Mountain Ash Variegation Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Mountain Ash Ringspot Mosaic Agent Mountain Ash Ringspot Mosaic Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Morone chrysops White bass vertebrate fish limited n/a (already in CA) Cal Code 14:671
Morganella longispina plumose scale arthropod scale, aphid not present high CDFA (reg. A)
Morbillivirus RBOK Rinderpest virus disease virus not present VALUE REQUIRED Chavarria NRDC
Morbillivirus ppr Peste des Petits Ruminants; disease virus VALUE REQUIRED VALUE REQUIRED Chavarria NRDC
Monopterus albus Asian swamp eel vertebrate fish not present low Cal Code 14:671
Mononychellus tanajoa green spider mite arthropod mite not present moderate USDA Plant/Pest
Monogeminivirus msv Maize Streak Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Monochoria vaginalis heartshape false pickerelweed plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Monochoria hastata arrowleaf falsepickerelweed plant herbaceous not present low USDA Plant/Pest
Moniliophthora roreri Watery Pod Rot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Monilinia fructigena Brown Rot of Fruit disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Molothrus ater Brown-headed cowbird vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Molossus molossus Pallas’s mastiff bat vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Mitraspora cyprini Fujita Parasitic protozoan of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Mirabilis nyctaginea wild four o-clock plant herbaceous limited n/a (already in CA) WA Weed List
Mimosa pigra catclaw mimosa plant woody not present low USDA Plant/Pest
Mimosa pellita lollipop mimosa plant woody not present low OR Weed List
Mimosa invisa giant sensitive plant plant woody not present low USDA Plant/Pest
Mimosa diplotricha giant sensitive plant plant woody not present low OR Weed List
Milium vernale milium plant grass not present low ID Weed List
Mikania micrantha bittervine plant herbaceous not present low USDA Plant/Pest
Mikania cordata mile-a-minute plant herbaceous not present low USDA Plant/Pest
Microcyclus ulei South American Leaf Blight disease fungus not present low APSNet
Metamasius spp. bromeliad weevils arthropod beetle not present moderate USDA Plant/Pest
Mesolecanium nigrofasciatum terrapin scale arthropod scale, aphid not present moderate CDFA (reg. A)
Mesembryanthemum crystallinum crystalline iceplant plant herbaceous widespread n/a (already in CA) Cal-IPC list
Meriones unguiculatus Mongolian gerbil vertebrate mammal not present moderate CDFA Vert List
Mephitis mephitis Skunk vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Mentha pulegium pennyroyal plant herbaceous widespread n/a (already in CA) Cal-IPC list
Melopsittacus undulatus Budgerigar vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Melittia cucurbitae squash vine borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Melittia calabaza southwestern squash vine borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Melastoma malabathricum Malabar melastome plant woody not present low APHIS
Melanomma glumarum Glume Blotch disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Melanaspis obscura obscure scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Melampsora pinitorqua Twist Rust disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Melaleuca quinquenervia broadleaf paper bard tree plant woody not present low USDA Plant/Pest
Melagris gallopavo Common turkey vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Megalopyge opercularis puss caterpillar arthropod butterfly, moth not present low CDFA (reg. A)
Megalometis chilensis Megalometis chilensis arthropod beetle not present moderate USDA Plant/Pest
Medicago polymorpha California burclover plant herbaceous widespread n/a (already in CA) Cal-IPC list
Maytenus boaria mayten plant woody limited n/a (already in CA) Med. plants list
Mastomys spp. Multimammate rat or mouse vertebrate mammal not present low Lacey Act
Massileurodes chittendeni rhodendron whitefly arthropod scale, aphid not present high CDFA (reg. A)
Maruca vitrata bean pod borer arthropod butterfly, moth not present high USDA Plant/Pest
Maruca testulalis bean pod borer arthropod butterfly, moth not present high CDFA (reg. A)
Marrubium vulgare white horehound plant herbaceous widespread n/a (already in CA) Cal-IPC list
Maple Variegation Agent Maple Variegation Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Maple Mosaic Agent Maple Mosaic Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Mandarivirus icrsv Indian citrus ringspot virus disease virus not present low NAPPO