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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
Ricinus communis castorbean plant herbaceous widespread n/a (already in CA) Cal-IPC list
Mimosa pigra catclaw mimosa plant woody not present low USDA Plant/Pest
Setaria pumila ssp. pallidefusca cattail grass plant grass not present moderate USDA Plant/Pest
Caulerpa brachypus Caulerpa brachypus plant algae unknown high Hoffman NOAA
Caulerpa racemosa Caulerpa racemosa plant algae VALUE REQUIRED high Hoffman NOAA
Ceratitis spp. Ceratitis spp. arthropod fly limited high USDA Plant/Pest
Nucleorhabdovirus ccmv Cereal Chlorotic Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Oulema melanopus cereal leaf beetle arthropod beetle not present high CDFA (reg. A)
Erysiphe graminis Cereal Mildew disease fungus limited n/a (already in CA) APSNet
Secale cereale cereal rye plant grass widespread n/a (already in CA) WA Weed List
Parlatoria pergandii chaff scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Botrylloides violaceus Chain sea squirt invertebrate crustaceans and tunicates limited n/a (already in CA) Exoticsguide
Rupicapra rupicapra Chamois vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Busycotypus canaliculatus Channeled whelk invertebrate aquatic mollusk, marine limited n/a (already in CA) Exoticsguide
Malva parviflora cheeseweed mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Rhagoletis cingulata cherry fruit fly arthropod fly not present moderate CDFA (reg. A)
Prunus cerasifera cherry plum plant woody widespread n/a (already in CA) Cal-IPC list
Trichovirus crmv Cherry Rusty Mottle Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Pucciniastrum areolatum Cherry-Spruce Rust disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Cryphonectria parasitica Chestnut blight disease fungus not present high ISSG Global InvS
Dryocosmus kuriphilus chestnut gall wasp arthropod bee, wasp not present high USDA Plant/Pest
Pammene fasciana chestnut leaf roller arthropod butterfly, moth not present low USDA Plant/Pest
Cydia splendana chestnut moth arthropod butterfly, moth not present high CDFA (reg. A)
Rhacodiella vitis Chestnut rot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Curculio elephas chestnut weevil arthropod beetle not present high USDA Plant/Pest
Pterocles exustus Chestnut-bellied sandgrouse vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Cichorium intybus chicory plant herbaceous widespread n/a (already in CA) CO Weed List
Listroderes subcinctus Chilean vegetable weevil arthropod beetle not present high USDA Plant/Pest
Scirtothrips dorsalis (Hood) Chilli thrips arthropod thrips not present high NAPPA Phyto
Bambusicola thoracica Chinese bamboo partridge vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Clematis orientalis Chinese clematis plant herbaceous not present high CO Weed List
Eriocher sinensis Chinese mitten crab invertebrate crustaceans and tunicates limited n/a (already in CA) CAISMP
Adoretus sinicus chinese rose beetle arthropod beetle not present high CDFA (reg. A)
Pelodiscus sinensis Chinese softshell vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Sapium sebiferum Chinese tallowtree plant woody limited n/a (already in CA) Cal-IPC list
Tombusviridae of unknown genus Chlorotic Ringspot Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Vibrio cholerae Cholera disease bacterium limited n/a (already in CA) CIDRAP
Unknown pathogenic virus or prion 2 Chronic Wasting Disease (Cervids) disease unknown not present moderate CDFA AHFSS
Puccinia horiana Chrysanthemum White Rust disease fungus limited n/a (already in CA) CACASA
Alectoris chukar Chukar partridge vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Batrachochytrium dendrobatidis chytrid frog fungi disease fungus limited n/a (already in CA) Amphibiaweb.org
Pseudococcus cryptus citriculus mealybug arthropod scale, aphid not present high CDFA (reg. A)
Apscaviroid 2 Citrus bent leaf viroid disease virus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Guignardia citricarpa Citrus Black Spot disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Aleurocanthus woglumi citrus blackfly arthropod scale, aphid not present high CDFA (reg. A)
Xanthomonas anoxopodis pv. citri Citrus Canker disease bacterium not present high USDA Plant/Pest
Birnaviridae fam: unknown Citrus Chlorotic Dwarf Virus disease virus not present low EFSA
Unknown pathogenic virus ccdv Citrus chlorotic dwarf virus ccdv disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Gonodonta pyrgo citrus fruitpiercing moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Cilivirus cilv-c Citrus leprosis virus C disease virus not present high Acarology Journa
Anoplophora chinensis citrus longhorned beetle arthropod beetle not present high CDFA (reg. A)
Tylenchulus semipenetrans citrus nematode invertebrate nematode widespread n/a (already in CA) CDFA (reg. C)
Prays endocarpa citrus pock caterpillar arthropod butterfly, moth not present low USDA Plant/Pest
Unaspis citri citrus snow scale arthropod scale, aphid not present moderate CDFA (reg. A)
Spiroplasma citri Citrus stubborn disease disease spiroplasma limited VALUE REQUIRED CACASA
Tymovirus (?) Citrus sudden death n/a probably Tymovirus disease virus not present VALUE REQUIRED No list
Capillovirus CiTLV Citrus tatter leaf capillovirus/Citrange stunt virus disease virus limited n/a (already in CA) EPPO
Closterovirus CTV Citrus tisteza virus disease virus limited moderate APHIS OPIS
Badnavirus cymvr Citrus yellow mosaic virus disease virus not present low EFSA
Xylella fastidiosa CVC Citrus/Select Agent (citrus variegated chlorosis strain) disease bacterium not present low APHIS OPIS
Salvia sclarea clary sage plant herbaceous not present moderate WA Weed List
Pestivirus CSFV strain Brescia Classical swine fever virus (strain Brescia) disease virus not present VALUE REQUIRED CDFA AHFSS
Hylastinus obscurus clover root borer arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Dasineura leguminicola clover seed midge arthropod fly unknown VALUE REQUIRED CDFA (reg. A)
Styela clava Club sea squirt invertebrate crustaceans and tunicates widespread n/a (already in CA) Exoticsguide
Cenchrus incertus coast sandbur plant grass widespread n/a (already in CA) CDFA
Tridax procumbens coat buttons plant herbaceous not present low USDA Plant/Pest
Nasua nasua Coatimundi vertebrate mammal VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Nymphicus hollandicus Cockatiel vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Lopholeucaspis cockerelli Cockerell scale arthropod scale, aphid not present high CDFA (reg. A)
Sobemovirus cmmv Cocksfoot Mild Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Ceratocystis moniliformis Cocoa ceratocystis wilt disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Badnavirus cssv Cocoa Mottle Leaf Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Nepovirus cnv Cocoa Necrosis Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Conopomorpha cramerella cocoa pod borer arthropod butterfly, moth not present low USDA Plant/Pest
Cocoa Swollen Shoot Virus Cocoa Swollen Shoot Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tymovirus cymv Cocoa Yellow Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Cocadviroid cccvd Coconut Cadang-Cadang Viroid disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Furcaspis oceanica coconut red scale arthropod scale, aphid not present high USDA Plant/Pest
Aspidiotus destructor coconut scale arthropod scale, aphid not present high CDFA (reg. A)
Diocalandra spp. coconut weevils arthropod beetle not present moderate CDFA (reg. A)
Araecerus coffeae coffee bean weevil arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Hypothenemus hampei coffee berry borer arthropod beetle not present moderate USDA Plant/Pest
Stephanoderes hampei Coffee fungus disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Planococcus lilacinus coffee mealybug arthropod scale, aphid not present high CDFA (reg. A)
Hemileia vastatrix Coffee Rust disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Imperata cylindrica cogongrass plant grass not present moderate USDA Plant/Pest
Leptinotarsa decemlineata Colorado potato beetle arthropod beetle not present high CDFA (reg. A)
Tussilago farfara coltsfoot plant herbaceous not present moderate OR Weed List
Sorghum almum Columbus grass plant grass not present moderate NV Weed List
Boa constrictor Common boa vertebrate reptile limited n/a (already in CA) Cal Code 14:671
Ascophyllum nodosum common brown algae plant algae limited n/a (already in CA) Hoffman NOAA
Anchusa officinalis common bugloss plant herbaceous limited n/a (already in CA) OR Weed List
Arctium minus common burdock plant herbaceous limited n/a (already in CA) CO Weed List
Serinus canaria Common canary vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Cardinalis cardinalis Common cardinal vertebrate bird VALUE REQUIRED n/a (already in CA) DFG Code 2118
Stellaria media common chickweed plant herbaceous widespread n/a (already in CA) Weeds of CA
Spartina anglica common cordgrass plant grass limited n/a (already in CA) Cal-IPC list
Tipula oleracea common crane fly arthropod fly not present low CDFA (reg. B)
Crupina vulgaris common crupina plant herbaceous limited n/a (already in CA) CDFA