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 Name | Type | Subtype |
Extent |
Risk of Introduction | First Source | |
|---|---|---|---|---|---|---|---|
| Zabrotes subfasciatus | Mexican bean weevil | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Dreissena polymorpha | Zebra mussels | invertebrate | aquatic mollusk, freshwater | limited | n/a (already in CA) | CAISMP | |
| Dreissena bugensis | Quagga mussels | invertebrate | aquatic mollusk, freshwater | limited | n/a (already in CA) | CAISMP | |
| Potamopyrgus antipodarum | New Zealand mudsnail | invertebrate | aquatic mollusk, freshwater | limited | n/a (already in CA) | CAISMP | |
| Busycotypus canaliculatus | Channeled whelk | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Ilynassa obsoleta | Eastern mudsnail | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Littorina saxatilis | Rough periwinkle | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Myosotella myosotis | Mouse-ear marshsnail | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Geukensia demissa | Ribbed horsemussel | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Musculista senhousia | Green bagmussel | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Mya arenaria | Soft-shell clam | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Corbula amurensis | Overbite clam | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Venerupsis phillipinarus | Japanese littleneck clam | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Carcinus maenas | Green crab | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | NISIC | |
| Eriocher sinensis | Chinese mitten crab | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | CAISMP | |
| Botrylloides violaceus | Chain sea squirt | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | Exoticsguide | |
| Didemnum vexillum | Sea squirt | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | Exoticsguide | |
| Botryllus schlosseri | Star sea squirt | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | Exoticsguide | |
| Balanus amphitrite | Striped barnacle | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | Exoticsguide | |
| Bugula neritina | Moss animal | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Cryptosula pallasiana | Moss animal | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Watersipora subtorquata | Moss animal | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Clathria polifera | Red beard sponge | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Diadumene lineata | Orange-stripped anemone | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Ficopomatus enigmaticus | Sea worms | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Myocastor coypus | Nutria | vertebrate | mammal | limited | n/a (already in CA) | Cal Code 14:671 | |
| Vulpes vulpes | Red Fox | vertebrate | mammal | limited | n/a (already in CA) | Cal Code 14:671 | |
| Canis familiaris | Feral dog | vertebrate | mammal | limited | high | Cal Code 14:671 | |
| Mustela putorius | European polecat or ferret | vertebrate | mammal | limited | n/a (already in CA) | Cal Code 14:671 | |
| Cervus axis | Axis deer | vertebrate | mammal | limited | n/a (already in CA) | Cal Code 14:671 | |
| Cervus dama | Fallow deer | vertebrate | mammal | limited | n/a (already in CA) | Cal Code 14:671 | |
| Myiopsitta monachus | Monk parakeet | vertebrate | bird | limited | n/a (already in CA) | Cal Code 14:671 | |
| Pycnonotus jocosus | Red-whiskered bulbul | vertebrate | bird | limited | n/a (already in CA) | CDFA Vert List | |
| Xenopus laevis | African clawed frog | vertebrate | amphibian | limited | n/a (already in CA) | Cal Code 14:671 | |
| Ambystoma tigrinum | Eastern Tiger Salamander | vertebrate | amphibian | limited | high | Cal Code 14:671 | |
| Trachemys scripta elegans | Red-eared slider | vertebrate | reptile | limited | n/a (already in CA) | Cal Code 14:671 | |
| Boa constrictor | Common boa | vertebrate | reptile | limited | n/a (already in CA) | Cal Code 14:671 | |
| Artemisia absinthium | absinthe wormwood | plant | herbaceous | limited | n/a (already in CA) | CO Weed List | |
| Carthamus oxyacantha | wild safflower | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Didymosphenia geminata | didymo | plant | algae | limited | high | Hoffman NOAA | |
| Euphorbia cyparissias | cypress spurge | plant | herbaceous | limited | n/a (already in CA) | CO Weed List | |
| Euphorbia myrsinites | myrtle spurge | plant | herbaceous | limited | n/a (already in CA) | CO Weed List | |
| Fatoua villosa | hairy crabwees | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Ipomoea aquatica | swamp morningglory | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Lycium ferocissimum | African boxthorn | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Orobanche spp. | broomrape | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Panicum repens | torpedo grass | plant | grass | limited | n/a (already in CA) | AZ Weed List | |
| Salvinia biloba | giant salvinia | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Salvinia herzogii | giant salvinia | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Senna obtusifolia | sicklepod | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Sparganium erectum | exotic bur reed | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Batrachochytrium dendrobatidis | chytrid frog fungi | disease | fungus | limited | n/a (already in CA) | Amphibiaweb.org | |
| Cronartium ribicola | White pine blister rust | disease | fungus | limited | n/a (already in CA) | ForestPests.org | |
| Erysiphe graminis | Cereal Mildew | disease | fungus | limited | n/a (already in CA) | APSNet | |
| Fusarium oxysporum f. sp. vasinfectum | Fusarium Wilt of Cotton | disease | fungus | limited | n/a (already in CA) | National IS Info | |
| Pyricularia grisea | Rice Blast | disease | fungus | limited | n/a (already in CA) | APSNet | |
| Myxobolus (Lentospora) cerebralis | Protozoic Whirling disease | disease | parasitic animal | limited | n/a (already in CA) | National IS Info | |
| Cuscuta spp. (C. japonica, reflexa, australia, monogyna) | Dodder (non-native spp.) | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Begomovirus (var.) | Begomovirus-caused diseases | disease | virus | limited | n/a (already in CA) | APHIS OPIS | |
| Orbivirus btv | Bluetongue | disease | virus | limited | n/a (already in CA) | Iowa State Univ | |
| Capillovirus CiTLV | Citrus tatter leaf capillovirus/Citrange stunt virus | disease | virus | limited | n/a (already in CA) | EPPO | |
| Birnaviridae | Kashmir Bee Virus | disease | virus | limited | n/a (already in CA) | APHIS OPIS | |
| Begomovirus (GEM2) | Tomato Yellow Leaf Curl Virus | disease | virus | limited | n/a (already in CA) | CDFA (reg. A) | |
| Sargassum muticum | Sargassum muticum | plant | algae | limited | low | Hoffman NOAA | |
| Ceratitis spp. | Ceratitis spp. | arthropod | fly | limited | high | USDA Plant/Pest | |
| Corbicula fluminalis | Corbicula fluminalis | invertebrate | aquatic mollusk, freshwater | limited | n/a (already in CA) | ANSTF | |
| 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 | |
| Schizoporella unicornis | Single horn bryozoan | invertebrate | other | limited | n/a (already in CA) | IMEAC | |
| Flavivirus 1 | Dengue Fever | disease | virus | limited | n/a (already in CA) | WHO | |
| Morone chrysops | White bass | vertebrate | fish | limited | n/a (already in CA) | Cal Code 14:671 | |
| Nerodia fasciata | Southern Watersnake | vertebrate | reptile | limited | high | Cal Code 14:671 | |
| Brevipalpus phoenicis | red and black flat mite | arthropod | mite | limited | n/a (already in CA) | CACASA | |
| Xanthomonas anoxopodis pv. citri | Citrus Canker | disease | bacterium | not present | high | USDA Plant/Pest | |
| Euphorbia serrata | serrate spurge | plant | herbaceous | not present | moderate | CDFA | |
| Halimodendron halodendron | Russian salttree | plant | woody | not present | moderate | CDFA | |
| Salsola collina | spineless Russian thistle | plant | herbaceous | not present | high | CDFA | |
| Salsola vermiculata | wormleaf salsola | plant | herbaceous | not present | low | CDFA | |
| Salvia virgata | southern meadow sage | plant | herbaceous | not present | moderate | CDFA | |
| Senecio squalidus | Oxford ragwort | plant | herbaceous | not present | low | CDFA | |
| Solanum cardiophyllum | heartleaf nightshade | plant | herbaceous | not present | low | CDFA | |
| Striga asiatica | witchweed | plant | herbaceous | not present | moderate | CDFA | |
| Tagetes minuta | wild marigold | plant | herbaceous | not present | moderate | CDFA | |
| Aphtae epizooticae | Hoof and mouth disease | disease | virus | not present | moderate | CDFA AHFSS | |
| Avian Influenza A (H5N1) | Avian influenza | disease | virus | not present | moderate | CDFA report | |
| Cirsium japonicum | Japanese thistle | plant | herbaceous | not present | low | CDFA | |
| Cuscuta reflexa | giant dodder | plant | herbaceous | not present | low | CDFA | |
| Hieracium aurantiacum | orange hawkweed | plant | herbaceous | not present | high | WA Weed List | |
| Limnophila indica | ambulia | plant | herbaceous | not present | moderate | CDFA | |
| Peganum harmala | harmel | plant | herbaceous | not present | high | No list | |
| Prosopis strombulifera | creeping mesquite | plant | woody | not present | moderate | USDA Plant/Pest | |
| Salvinia auriculata | giant salvinia | plant | herbaceous | not present | low | USDA Plant/Pest | |
| Raffaelea lauricola | Laurel Wilt Disease | disease | fungus | not present | moderate | National IS Info | |
| Carthamus leucocaulos | whitestem distaff thistle | plant | herbaceous | not present | moderate | CDFA | |
| Echium vulgare | common viper's bugloss | plant | herbaceous | not present | high | WA Weed List | |
| Ottelia alismoides | ducklettuce | plant | herbaceous | not present | high | USDA Plant/Pest | |
| Physalis longifolia | long-leaf groundcherry | plant | herbaceous | not present | moderate | CDFA | |
| 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 |
