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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 Type Subtype Extent Risk of Introductionsort icon First Source
Hedera hibernica English ivy plant woody not present high WA Weed List
Heracleum mantegazzianum giant hogweed plant herbaceous not present high CDFA
Hieracium caespitosum yellow hawkweed plant herbaceous not present high ID Weed List
Hygrophila polysperma Miramar weed plant herbaceous not present high CDFA
Orobanche minor small broomrape plant herbaceous not present high OR Weed List
Sagittaria graminea grass-leaved arrowhead plant herbaceous not present high WA Weed List
Striga spp. witchweed plant herbaceous not present high USDA Plant/Pest
Urochloa panicoides liverseed grass plant grass not present high USDA Plant/Pest
Vallisneria spp. eelgrass plant herbaceous not present high CDFA
Cryphonectria parasitica Chestnut blight disease fungus not present high ISSG Global InvS
Geosmithia sp. Thousand Cankers Disease Complex disease fungus unknown high National IS Info
Phakopsora meibomiae soybean rust disease fungus not present high APHIS OPIS
Potyvirus ppv Plum Pox Virus disease virus not present high APHIS OPIS
Caulerpa brachypus Caulerpa brachypus plant algae unknown high Hoffman NOAA
Caulerpa racemosa Caulerpa racemosa plant algae VALUE REQUIRED high Hoffman NOAA
Candidatus Liberibacter sp. Huanglongbing Disease of Citrus disease bacterium not present high USDA Plant/Pest
Adoretus spp. Adoretus spp. arthropod beetle not present high USDA Plant/Pest
Ceratitis spp. Ceratitis spp. arthropod fly limited high USDA Plant/Pest
Conoderus rufangulus Conoderus rufangulus arthropod beetle not present high USDA Plant/Pest
Euvarroa sinhai Euvarroa sinhai arthropod mite not present high USDA Plant/Pest
Laspeyresia spp. Laspeyresia spp. arthropod butterfly, moth not present high USDA Plant/Pest
Aulacaspis yasumatsui cycad aulacaspis scale arthropod scale, aphid not present high Univ. Florida
Zosterops japonica Japanese White-eye vertebrate bird not present high Cal Code 14:671
Planococcus minor (Maskell) Passionvine mealybug arthropod scale, aphid not present high CDFA (reg. A)
Scirtothrips dorsalis (Hood) Chilli thrips arthropod thrips not present high NAPPA Phyto
Hypophthalmichthys nobilis Bighead Carp vertebrate fish not present high Lacey Act
Cichlasoma spilurum Blue-eyed cichlid vertebrate fish not present high Cal Code 14:671
Quadrastichus erythrinae Erythrnia gall wasp arthropod bee, wasp not present high FL Dept. of Ag
Mylopharyngodon piceus Black Carp vertebrate fish not present high Cal Code 14:671
Nerodia fasciata Southern Watersnake vertebrate reptile limited high Cal Code 14:671
Porphyrio porphyrio Purple Swamphen vertebrate bird not present high Cal Code 14:671
Threskiornis aetheopicus Sacred Ibis vertebrate bird not present high Cal Code 14:671
Salsola vermiculata wormleaf salsola plant herbaceous not present low CDFA
Senecio squalidus Oxford ragwort plant herbaceous not present low CDFA
Solanum cardiophyllum heartleaf nightshade plant herbaceous not present low CDFA
Cirsium japonicum Japanese thistle plant herbaceous not present low CDFA
Cuscuta reflexa giant dodder plant herbaceous not present low CDFA
Salvinia auriculata giant salvinia plant herbaceous not present low USDA Plant/Pest
Candidatus Liberibacter africanus Huanglongbing disease of citrus-African strain disease bacterium not present low USDA Plant/Pest
Entyloma oryzae Leaf Smut of rice disease fungus not present low APHIS OPIS
Phakopsora pachyrhizi Asian soybean Rust disease fungus not present low National IS Info
Synchytrium endobioticum Potato Wart/Select Agent disease fungus not present low EPPO
Unknown pathogenic virus or prion 1 Bovine spongiform encephalopathy (BSE) disease unknown not present low Iowa State Univ
Mandarivirus icrsv Indian citrus ringspot virus disease virus not present low NAPPO
Anastrepha striata guava fruit fly arthropod fly not present low CDFA (reg. A)
Anomala foraminosa scarab beetle arthropod beetle not present low CDFA (reg. A)
Anomala insitiva scarab beetle arthropod beetle not present low CDFA (reg. A)
Anomala luteipennis scarab beetle arthropod beetle not present low CDFA (reg. A)
Anomala undulata scarab beetle arthropod beetle unknown low CDFA (reg. A)
Argyrotaenia pulchellana grey red-barred twist arthropod butterfly, moth not present low USDA Plant/Pest
Bactrocera albistrigata White Striped Fruit Fly arthropod fly not present low CDFA (reg. A)
Bactrocera irvingiae irvinge fruit fly arthropod fly not present low CDFA (reg. A)
Bactrocera scutellata Striped fruit fly arthropod fly not present low CDFA (reg. A)
Carposina niponensis peach fruit moth arthropod butterfly, moth not present low USDA Plant/Pest
Chrysodeixis eriosoma green garden looper arthropod butterfly, moth not present low CDFA (reg. A)
Cochliomyia hominivorax screwworm arthropod fly not present low CDFA (reg. A)
Coelioxys spp. cuckoo bees arthropod bee, wasp not present low USDA Plant/Pest
Conopomorpha cramerella cocoa pod borer arthropod butterfly, moth not present low USDA Plant/Pest
Conopomorpha litchiella lychee leaf miner arthropod butterfly, moth not present low CDFA (reg. A)
Contarinia johnsoni grape blossum midge arthropod fly not present low CDFA (reg. A)
Cryptorhynchus mangiferae mango seed weevil arthropod beetle not present low USDA Plant/Pest
Dacus cucurbitae Melon fruit fly arthropod fly not present low CDFA (reg. A)
Euproctis chrysorrhoea browntail moth arthropod butterfly, moth not present low CDFA (reg. A)
Globodera rostochiensis Golden Nematode invertebrate nematode not present low CDFA (reg. A)
Hemimene juliana nut fruit tortrix arthropod butterfly, moth not present low USDA Plant/Pest
Horidiplosis ficifolii Ornamental fig pest arthropod fly not present low Univ. Florida
Lymire edwardsii Edwards' wasp moth arthropod butterfly, moth not present low CDFA (reg. A)
Magicicada septendecim periodical cicada arthropod scale, aphid not present low CDFA (reg. A)
Megalopyge opercularis puss caterpillar arthropod butterfly, moth not present low CDFA (reg. A)
Ophiomyia phaseoli bean fly arthropod fly not present low CDFA (reg. A)
Pammene fasciana chestnut leaf roller arthropod butterfly, moth not present low USDA Plant/Pest
Prays endocarpa citrus pock caterpillar arthropod butterfly, moth not present low USDA Plant/Pest
Pseudococcus elisae banana mealybug arthropod scale, aphid not present low CDFA (reg. A)
Rhagoletis cerasi European cherry fruit fly arthropod fly not present low CDFA (reg. A)
Scrobipalpa ocellatella surgarbeet crown borer arthropod butterfly, moth not present low CDFA (reg. A)
Sminthurus viridus lucerne flea arthropod springtail not present low USDA Plant/Pest
Tipula oleracea common crane fly arthropod fly not present low CDFA (reg. B)
Tischeria marginata moth arthropod butterfly, moth not present low CDFA (reg. A)
Limnoperna fortunei Golden mussel invertebrate aquatic mollusk, freshwater not present low ANSIS
Trichosurus vulpecula Brush-tailed possum vertebrate mammal not present low Lacey Act
Pteropus spp. Flying fox vertebrate mammal not present low Cal Code 14:671
Cynomys ludovicianus Prairie dog vertebrate mammal not present low CDFA Vert List
Cricetomys gambianus Gambian giant pouched rat vertebrate mammal not present low Cal Code 14:671
Mastomys spp. Multimammate rat or mouse vertebrate mammal not present low Lacey Act
Padda oryzivora Java sparrow vertebrate bird not present low Lacey Act
Quelea quelea Red-billed quelea vertebrate bird not present low Cal Code 14:671
Acridotheres cristatellus Crested mynah vertebrate bird not present low Cal Code 14:671
Osteopilus septentrionalis Cuban treefrog vertebrate amphibian not present low Cal Code 14:671
Chrysopogon aciculatus pilipiliula plant grass not present low USDA Plant/Pest
Crassula helmsii Australian swamp stonecrop plant herbaceous not present low WA Weed List
Eichhornia azurea anchored water hyacinth plant herbaceous not present low USDA Plant/Pest
Glossostigma diandrum mud mat plant herbaceous not present low WA Weed List
Hieracium atratum polar hawkweed plant herbaceous not present low WA Weed List
Hieracium glomeratum queen devil hawkweed plant herbaceous not present low WA Weed List
Hieracium laevigatum smooth hawkweed plant herbaceous not present low WA Weed List
Homeria spp. cape tulip plant herbaceous not present low USDA Plant/Pest
Imperata brasiliensis Brazilian satintail plant grass not present low USDA Plant/Pest
Ischaemum rugosum murainograss plant grass not present low USDA Plant/Pest
Lepyrodiclis holosteoides false jagged-chickweed plant herbaceous not present low WA Weed List
Lythrum virgatum purple loosestrife plant herbaceous not present low MT Weed List