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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
Tarentola mauritanica Moorish gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Crocosmia x crocosmiiflora montbretia plant herbaceous limited n/a (already in CA) Cal-IPC list
Myiopsitta monachus Monk parakeet vertebrate bird limited n/a (already in CA) Cal Code 14:671
Meriones unguiculatus Mongolian gerbil vertebrate mammal not present moderate CDFA Vert List
Aratinga mitrata Mitered conure vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Pennisetum polystachion missiongrass plant grass not present low USDA Plant/Pest
Geminiviruses Misc. viral diseases of cotton, pepper, etc. disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Hygrophila polysperma Miramar weed plant herbaceous not present high CDFA
Howardia biclavis mining scale arthropod scale, aphid not present high CDFA (reg. A)
Milium vernale milium plant grass not present low ID Weed List
Mikania cordata mile-a-minute plant herbaceous not present low USDA Plant/Pest
Ctenosaura pectinata Mexican spinytail iguana vertebrate reptile not present moderate Cal Code 14:671
Sciurus aureogaster Mexican red-bellied squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Anastrepha ludens complex Mexican fruit fly complex arthropod fly not present moderate CDFA (reg. A)
Washingtonia robusta Mexican fan palm plant woody limited n/a (already in CA) Cal-IPC list
Erigeron karvinskianus Mexican daisy plant herbaceous limited n/a (already in CA) Med. plants list
Diabrotica virgifera zea Mexican corn rootworm arthropod beetle not present moderate CDFA (reg. A)
Zabrotes subfasciatus Mexican bean weevil arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Epilachna varivestis Mexican bean beetle arthropod beetle not present high CDFA (reg. A)
Prosopis velutina mesquite plant woody limited n/a (already in CA) USDA Plant/Pest
Prosopis alpataco mesquite plant woody not present low USDA Plant/Pest
Prosopis argentina mesquite plant woody not present low USDA Plant/Pest
Prosopis articulata mesquite plant woody not present low USDA Plant/Pest
Prosopis burkartii mesquite plant woody not present low USDA Plant/Pest
Prosopis caldenia mesquite plant woody not present low USDA Plant/Pest
Prosopis campestris mesquite plant woody not present low USDA Plant/Pest
Prosopis castellanosii mesquite plant woody not present low USDA Plant/Pest
Prosopis denudans mesquite plant woody not present low USDA Plant/Pest
Prosopis elata mesquite plant woody not present low USDA Plant/Pest
Prosopis farcta mesquite plant woody not present low USDA Plant/Pest
Prosopis ferox mesquite plant woody not present low USDA Plant/Pest
Prosopis fiebrigii mesquite plant woody not present low USDA Plant/Pest
Prosopis hassleri mesquite plant woody not present low USDA Plant/Pest
Prosopis humilis mesquite plant woody not present low USDA Plant/Pest
Prosopis kuntzei mesquite plant woody not present low USDA Plant/Pest
Prosopis pallida mesquite plant woody not present low USDA Plant/Pest
Prosopis palmeria mesquite plant woody not present low USDA Plant/Pest
Prosopis reptans mesquite plant woody not present low USDA Plant/Pest
Prosopis rojasiana mesquite plant woody not present low USDA Plant/Pest
Prosopis ruizlealii mesquite plant woody not present low USDA Plant/Pest
Prosopis ruscifolia mesquite plant woody not present low USDA Plant/Pest
Prosopis sericantha mesquite plant woody not present low USDA Plant/Pest
Prosopis torquata mesquite plant woody not present low USDA Plant/Pest
Paramyxovirus mv Menangle Virus disease virus VALUE REQUIRED VALUE REQUIRED Chavarria NRDC
Diaphania hyalinata melonworm arthropod butterfly, moth not present moderate CDFA (reg. A)
Thrips palmi melon thrips arthropod thrips not present high CDFA (reg. A)
Dacus cucurbitae Melon fruit fly arthropod fly not present low CDFA (reg. A)
Bactrocera cucurbitae melon fly arthropod fly not present low CDFA (reg. A)
Garrulax canorus Melodious laughing thrush vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Megalometis chilensis Megalometis chilensis arthropod beetle not present moderate USDA Plant/Pest
Taeniatherum caput-medusae medusahead plant grass widespread n/a (already in CA) CDFA
Schismus arabicus mediterraneangrass plant grass widespread n/a (already in CA) Cal-IPC list
Schismus barbatus mediterraneangrass plant grass widespread n/a (already in CA) Cal-IPC list
Caulerpa taxifolia Mediterranean strain plant algae limited high OR Weed List
Stipa capensis Mediterranean steppegrass plant grass limited n/a (already in CA) Cal-IPC list
Salvia aethiopis Mediterranean sage plant herbaceous limited n/a (already in CA) CDFA
Orthotomicus erosus Mediterranean pine engraver arthropod beetle not present high CDFA (reg. B)
Limnoria tripunctata Mediterranean gribble invertebrate crustaceans and tunicates limited n/a (already in CA) IMEAC
Limnoria quadripuncatata Mediterranean gribble invertebrate crustaceans and tunicates limited n/a (already in CA) IMEAC
Hemidactylus turcicus Mediterranean gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Ceratitis capitata Mediterranean fruit fly arthropod fly not present moderate CDFA (reg. A)
mytilus galloprovincialis Mediterranean blue mussel invertebrate aquatic mollusk, marine widespread n/a (already in CA) IMEAC
Hordeum marinum Mediterranean barley plant grass widespread n/a (already in CA) Cal-IPC list
Hordeum murinum Mediterranean barley plant grass widespread n/a (already in CA) Cal-IPC list
Ferrisia consobrina mealybug arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Trachysphaera fructigena Mealy Pod Diseases of Cushy Gall Disease disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Centaurea debeauxii meadow knapweed plant herbaceous limited n/a (already in CA) Cal-IPC list
Salvia pratensis meadow clary plant herbaceous not present moderate WA Weed List
Baculovirus PmSNPV Mbv-Type Virus of fish disease virus VALUE REQUIRED VALUE REQUIRED No list
Anthemis cotula mayweed chamomile plant herbaceous widespread n/a (already in CA) CO Weed List
Maytenus boaria mayten plant woody limited n/a (already in CA) Med. plants list
Phyllophaga congrua May beetle arthropod beetle not present moderate CDFA (reg. A)
Nardus stricta matgrass plant grass not present moderate ID Weed List
Cenchrus longispinus mat sandbur plant grass widespread n/a (already in CA) CDFA
Lepidosaphes maskelli Maskell scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Murdannia keisak marsh dew flower plant herbaceous not present moderate WA Weed List
Anolis ferreus Marie Gallant Sail-tailed anole vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Aerodramus bartschi Mariana swiftlet vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Candidatus fragariae Marginal chlororsis disease bacterium VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Candidatus Phlomobacter fragariae Marginal chlororsis disease bacterium VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
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
Mabuya multifasciata Many-lined grass skink vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Cryptorhynchus mangiferae mango seed weevil arthropod beetle not present low USDA Plant/Pest
Sternochetus mangiferae mango seed weevil arthropod beetle not present moderate USDA Plant/Pest
Protaetia fusca mango flower beetle arthropod beetle not present moderate CDFA (reg. A)
Aix galericulata Mandarin duck vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Ferrisia malvastra malvastrum mealybug arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Centaurea melitensis Malta starthistle plant herbaceous widespread n/a (already in CA) CDFA
Plasmodium falciparum Malaria disease protist VALUE REQUIRED VALUE REQUIRED CIDRAP
Plasmodium knowlesi Malaria disease protist VALUE REQUIRED VALUE REQUIRED CIDRAP
Plasmodium malariae Malaria disease protist VALUE REQUIRED VALUE REQUIRED CIDRAP
Plasmodium ovale Malaria disease protist VALUE REQUIRED VALUE REQUIRED CIDRAP
Plasmodium vivax Malaria disease protist VALUE REQUIRED VALUE REQUIRED CIDRAP
Melastoma malabathricum Malabar melastome plant woody not present low APHIS
Phoma tracheiphila Mal Secco disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Monogeminivirus msv Maize Streak Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Fijivirus mrdv Maize Rough Dwarf Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tenuivirus mmcsv Maize Mottle/Chlorotic Stunt Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Sphenophorus maidis maize billbug arthropod beetle not present moderate CDFA (reg. A)