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 Extentsort icon Risk of Introduction First Source
Tranes internatus macrozamia borer arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Trioza erytreae African citrus psyllid arthropod scale, aphid limited n/a (already in CA) CDFA (reg. A)
Unaspis euonymi euonymus scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Xyleborus pfeili ambrosia beetle arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Zabrotes spp. bean weevil arthropod beetle limited n/a (already in CA) CDFA (reg. B)
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