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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
Xanthomonas campestris pv vasculorum Sugarcane Gumming Disease disease bacterium VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Peronosclerospora sacchari (philippinensis) Sugarcane Downy Mildew disease fungus not present low USDA Plant/Pest
Diatraea saccharalis sugarcane borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Phytophthora ramorum Sudden oak death disease oomycete limited n/a (already in CA) APHIS OPIS
Ferrisia virgata striped mealybug arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Bactrocera scutellata Striped fruit fly arthropod fly not present low CDFA (reg. A)
Acalymma vittatum striped cucumber beetle arthropod beetle not present high CDFA (reg. A)
Balanus amphitrite Striped barnacle invertebrate crustaceans and tunicates limited n/a (already in CA) Exoticsguide
Nepovirus slrsv Strawberry Latent Ringspot Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Anthonomus signatus strawberry bud weevil arthropod beetle not present high CDFA (reg. A)
Unknown pathogenic phytoplasma 9 Stolbur disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Mustela erminea Stoat vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Dittrichia graveolens stinkwort plant herbaceous widespread n/a (already in CA) Cal-IPC list
Arctotheca calendula (sterile) sterile capeweed plant herbaceous limited n/a (already in CA) CDFA
Rhacodiella vitis Sterenberg fungus disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Antaeotricha leucillana stenomine oecophorid arthropod butterfly, moth not present moderate CDFA (reg. A)
Phellinus senex Stem decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Botryllus schlosseri Star sea squirt invertebrate crustaceans and tunicates limited n/a (already in CA) Exoticsguide
Papaipema nebris stalk borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Myllocerus undecimpustulatus undatus Sri Lanka weevil arthropod beetle not present moderate CDFA (reg. A)
Saimiri sciureus Squirrel monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Melittia cucurbitae squash vine borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Epilachna borealis squash beetle arthropod beetle not present high CDFA (reg. A)
Centaurea virgata ssp. Squarrosa squarrose knapweed plant herbaceous limited n/a (already in CA) Cal-IPC list
Cathartus quadricollis squarenecked grain beetle arthropod beetle not present high CDFA (reg. A)
Anoda cristata spurred anoda plant herbaceous limited n/a (already in CA) CO Weed List
Thymelaea passerina spurge flax plant herbaceous not present moderate WA Weed List
Chrysomyxa abietis Spruce Needle Rust disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Chrysomyxa himalensis Spruce Needle Rust disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Choristoneura fumiferana spruce budworm arthropod butterfly, moth not present moderate CDFA (reg. A)
Zeiraphera canadensis spruce budworm arthropod butterfly, moth not present moderate CDFA (reg. A)
Drosophila suzukii Spotted Wing Drosophila arthropod fly widespread n/a (already in CA) CDFA Detect. Adv
Centaurea stoebe ssp. micranthos spotted knapweed plant herbaceous limited n/a (already in CA) AZ Weed List
Streptopelia chinensis Spotted dove vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Diabrotica undecimpunctata howardi spotted cucumber beetle arthropod beetle not present high CDFA (reg. A)
Earias fabia spotted bollworm arthropod butterfly, moth not present moderate USDA Plant/Pest
Icterus pectoralis Spot-breasted oriole vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Limnobium laevigatum spongeplant plant herbaceous limited n/a (already in CA) CDFA
Trionyx spiniferus Spiny softshell vertebrate reptile VALUE REQUIRED n/a (already in CA) DFG Code 2118
Salsola collina spineless Russian thistle plant herbaceous not present high CDFA
Caiman crocodilus Spectacled caiman vertebrate reptile not present high Cal Code 14:671
Spartium junceum Spanish broom plant woody widespread n/a (already in CA) Cal-IPC list
Phakopsora meibomiae soybean rust disease fungus not present high APHIS OPIS
Luteovirus sbdv Soybean dwarf virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Soybean Dwarf Virus Soybean Dwarf Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Aphis glycines soybean aphid arthropod scale, aphid not present high USDA pest
Melittia calabaza southwestern squash vine borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Diatraea grandiosella southwestern corn borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Nerodia fasciata Southern Watersnake vertebrate reptile limited high Cal Code 14:671
Cenchrus echinatus southern sandbur plant grass widespread n/a (already in CA) CDFA
Scapteriscus borellii southern mole cricket arthropod grasshopper, cricket limited n/a (already in CA) CDFA (reg. B)
Salvia virgata southern meadow sage plant herbaceous not present moderate CDFA
Diatraea crambidoides southern corn stalk borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Spodoptera eridania southern armyworm arthropod butterfly, moth not present high CDFA (reg. A)
Microcyclus ulei South American Leaf Blight disease fungus not present low APSNet
Naupactus xanthographus South American fruit tree weevil arthropod beetle not present moderate USDA Plant/Pest
Anastrepha fraterculus South American fruit fly arthropod fly not present high CDFA (reg. A)
Anastrepha grandis South American cucurbit fruit fly arthropod fly not present high USDA Plant/Pest
Senecio inaequidens South African ragwort plant woody not present low USDA Plant/Pest
Celama sorghiella sorghum webworm arthropod butterfly, moth not present moderate CDFA (reg. A)
Claviceps spp. Sorghum Ergot disease fungus limited VALUE REQUIRED APHIS OPIS
Sorghum propinquum sorghum plant grass not present low NV Weed List
Bactrocera latifrons solanaceous fruit fly arthropod fly not present moderate CDFA (reg. A)
Mya arenaria Soft-shell clam invertebrate aquatic mollusk, marine limited n/a (already in CA) Exoticsguide
Bromus hordeaceus soft brome plant grass widespread n/a (already in CA) Cal-IPC list
Chelydra serpentine Snapping turtle vertebrate reptile not present moderate Cal Code 14:671
Cuscuta approximata smoothseed alfalfa dodder plant herbaceous limited n/a (already in CA) WA Weed List
Hieracium laevigatum smooth hawkweed plant herbaceous not present low WA Weed List
Carthamus baeticus smooth distaff thistle plant herbaceous limited n/a (already in CA) CDFA
Spartina alterniflora smooth cordgrass and hybrids plant grass limited n/a (already in CA) Cal-IPC list
Spartina alterniflora x foliosa hybrids smooth cordgrass and hybrids plant grass limited n/a (already in CA) Cal-IPC list
Hypochaeris glabra smooth catsear plant herbaceous widespread n/a (already in CA) CO Weed List
Piptatherum miliaceum smilograss plant grass widespread n/a (already in CA) Cal-IPC list
Tamarix parviflora smallflower tamarisk plant woody widespread n/a (already in CA) Cal-IPC list
Conotrachelus perseae small seed weevil arthropod beetle not present high CDFA (reg. A)
Atrichonotus taeniatulus small lucerne weevil arthropod beetle not present high CDFA (reg. B)
Herpestes auropunctatus Small Indian mongoose vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Aethina tumida small hive beetle arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Orobanche minor small broomrape plant herbaceous not present high OR Weed List
Conotrachelus aguacatae small avocado seed weevil arthropod beetle not present high USDA Plant/Pest
Amaranthus hybridus slim amaranth plant herbaceous widespread n/a (already in CA) Weeds of CA
Carduus tenuiflorus slenderflower thistle plant herbaceous widespread n/a (already in CA) CDFA
Najas minor slender-leaved naiad plant herbaceous not present moderate WA Weed List
Avena barbata slender wild oat plant grass widespread n/a (already in CA) Cal-IPC list
Mephitis mephitis Skunk vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Ambrosia tomentosa skeletonleaf bursage plant herbaceous not present high ID Weed List
Sirex noctilio sirex woodwasp arthropod bee, wasp not present moderate CDFA (reg. A)
Schizoporella unicornis Single horn bryozoan invertebrate other limited n/a (already in CA) IMEAC
Solanum elaeagnifolium silverleaf nightshade plant herbaceous limited n/a (already in CA) CDFA
Cotoneaster pannosus silverleaf cotoneaster plant woody limited n/a (already in CA) Cal-IPC list
Acacia dealbata silver wattle plant woody limited n/a (already in CA) Cal-IPC list
Hypophthalmichthys molitrix Silver Carp vertebrate fish not present moderate Cal Code 14:671
Cervus Nippon Sika deer vertebrate mammal VALUE REQUIRED VALUE REQUIRED Harmful U.S. NIS
Senna obtusifolia sicklepod plant herbaceous limited n/a (already in CA) CDFA
Centaurea sulphurea Sicilian thistle plant herbaceous limited n/a (already in CA) CDFA
Ulmus pumila Siberian elm plant woody limited n/a (already in CA) Med. plants list
Lophocateres pusillus Siamese grain borer arthropod beetle not present moderate CDFA (reg. A)
Hirschfeldia incana shortpod mustard plant herbaceous widespread n/a (already in CA) Cal-IPC list
Teredo barstschi Shipworm invertebrate aquatic mollusk, marine VALUE REQUIRED VALUE REQUIRED IMEAC
Rattus rattus Ship rat vertebrate mammal widespread n/a (already in CA) Cal Code 14:671