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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 Name Typesort icon Subtype Extent Risk of Introduction First Source
Waikavirus rtsv Rice Tungro Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Birnaviridae fam: unknown Citrus Chlorotic Dwarf Virus disease virus not present low EFSA
Capillovirus CiTLV Citrus tatter leaf capillovirus/Citrange stunt virus disease virus limited n/a (already in CA) EPPO
Badnavirus cymvr Citrus yellow mosaic virus disease virus not present low EFSA
Cocoa Swollen Shoot Virus Cocoa Swollen Shoot Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Nepovirus gtrsv Grapevine Tunisian Ringspot Virus disease virus not present low APHIS OPIS
Jasmine Variegation Agents Jasmine Variegation Agents disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Birnaviridae Kashmir Bee Virus disease virus limited n/a (already in CA) APHIS OPIS
Ligustrum Mosaic Agents Ligustrum Mosaic Agents disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Maple Mosaic Agent Maple Mosaic Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Maple Variegation Agent Maple 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
Mountain Ash Variegation Agent Mountain Ash Variegation Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Mulberry Mosaic Agent Mulberry Mosaic Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Oat Red Streak Mosaic Virus Oat Red Streak Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Okra Mosaic Agents Okra Mosaic Agents disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Okra Yellow Leaf Curl Agent Okra Yellow Leaf Curl Agent disease virus VALUE REQUIRED VALUE REQUIRED No list
Pear Bud Drop Agent Pear Bud Drop Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phyllody Agent Phyllody Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Plum Bark Split Virus Plum Bark Split Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Quince Sooty Ringspot Agent Quince Sooty Ringspot Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Quince Yellow Blotch Agent Quince Yellow Blotch Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Sampaguita Yellow Ringspot Mosaic Agent Sampaguita Yellow Ringspot Mosaic Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Soybean Dwarf Virus Soybean Dwarf Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Sweetpotato chlorotic stunt virus Sweetpotato chlorotic stunt virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Begomovirus (GEM2) Tomato Yellow Leaf Curl Virus disease virus limited n/a (already in CA) CDFA (reg. A)
Veinal necrosis virus (PVYN) Veinal necrosis virus (PVYN) disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Candidatus Liberibacter sp. Huanglongbing Disease of Citrus disease bacterium not present high USDA Plant/Pest
Beauveria spp. Beauveria bassiana (Balsamo) disease fungus widespread n/a (already in CA) National IS Info
Bunyavirus (TZSV) Tomato zonate spot virus (TZSV) disease virus not present low NISIC
Dickeya solani Black leg disease of potato disease bacterium not present moderate EPPO
Flavivirus 1 Dengue Fever disease virus limited n/a (already in CA) WHO
Begomovirus (ToTV) Tomato Torrado Virus (ToTV) disease virus not present moderate EPPO
Phytophthora alni Alder Phytophthora disease fungus not present low NAPPO
Novirhadovirus Viral Hemorrhagic Septicemia Virus (VHSV) Viral Hemorragic septicemia disease virus not present moderate National IS Info
Globodera pallida Pale cyst nematode invertebrate nematode not present moderate NAPPA Phyto
Globodera rostochiensis Golden Nematode invertebrate nematode not present low CDFA (reg. A)
Hemicycliophora arenaria sheath nematode invertebrate nematode unknown n/a (already in CA) CDFA (reg. A)
Pratylenchus coffeae root-lesion nematode invertebrate nematode unknown moderate CDFA (reg. C)
Radopholus similis Burrowing Nematode invertebrate nematode not present moderate CDFA (reg. A)
Rotylenchulus reniformis Reniform Nematode invertebrate nematode not present moderate CDFA (reg. A)
Tylenchulus semipenetrans citrus nematode invertebrate nematode widespread n/a (already in CA) CDFA (reg. C)
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
Limnoperna fortunei Golden mussel invertebrate aquatic mollusk, freshwater not present low ANSIS
Corbicula fluminea Asian clam invertebrate aquatic mollusk, freshwater widespread n/a (already in CA) ANSTF
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
Urosalpinx cinerea Atlantic oyster drill invertebrate aquatic mollusk, marine widespread 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
Orconectes rusticus Rusty crayfish invertebrate crustaceans and tunicates not present high NISIC
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
Styela clava Club sea squirt invertebrate crustaceans and tunicates widespread 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
Cryptocotyle lingua Black Spot parasite of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Gyrodactylus elegans Parasitic flatworm of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Ichthyophithirius multifilis Parsitic protozoan of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Mitraspora cyprini Fujita Parasitic protozoan of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Oodinium pilularis Velvet disease invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Pleistophora hyphessobryconis Neon-tetra disease of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Protopalina symphysodonis Protopalina symphysodonis infection of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Trichodinella epizootica Protozoic parasite of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Corbicula fluminalis Corbicula fluminalis invertebrate aquatic mollusk, freshwater limited n/a (already in CA) ANSTF
Potamocorbula amurensis Amur River Corbula Clam invertebrate aquatic mollusk, marine VALUE REQUIRED VALUE REQUIRED NISIC
Sphaeroma quoyanum Isopod invertebrate crustaceans and tunicates VALUE REQUIRED VALUE REQUIRED NISIC
Lydorus pedicellatus Blacktip shipworm invertebrate aquatic mollusk, marine VALUE REQUIRED VALUE REQUIRED IMEAC
Teredo barstschi Shipworm invertebrate aquatic mollusk, marine VALUE REQUIRED VALUE REQUIRED IMEAC
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
mytilus galloprovincialis Mediterranean blue mussel invertebrate aquatic mollusk, marine widespread n/a (already in CA) IMEAC
Schizoporella unicornis Single horn bryozoan invertebrate other limited n/a (already in CA) IMEAC
Phragmites australis common reed plant grass limited n/a (already in CA) Cal-IPC list
Zygophyllum fabago Syrian beancaper plant herbaceous limited n/a (already in CA) CDFA
Arctium minus common burdock plant herbaceous limited n/a (already in CA) CO Weed List
Oryza rufipogon red rice plant grass limited n/a (already in CA) CDFA
Caulerpa taxifolia Mediterranean strain plant algae limited high OR Weed List
Euphorbia serrata serrate spurge plant herbaceous not present moderate CDFA
Halimodendron halodendron Russian salttree plant woody not present moderate CDFA
Helianthus ciliaris blueweed plant herbaceous limited n/a (already in CA) 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
Scolymus hispanicus golden thistle plant herbaceous limited n/a (already in CA) CDFA