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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 Namesort icon Common Name Type Subtype Extent Risk of Introduction First Source
Typophorus nigritus viridicyaneus sweetpotato leaf beetle arthropod beetle not present moderate CDFA (reg. A)
Tymovirus okmv Okra Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tymovirus dmv Dulcamara Mottle Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tymovirus cymv Cocoa Yellow Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tymovirus aplv Andean Potato Latent Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tymovirus (?) Citrus sudden death n/a probably Tymovirus disease virus not present VALUE REQUIRED No list
Tylenchulus semipenetrans citrus nematode invertebrate nematode widespread n/a (already in CA) CDFA (reg. C)
Tussilago farfara coltsfoot plant herbaceous not present moderate OR Weed List
Tupinambis merianae Argentina giant tegu vertebrate reptile not present high Cal Code 14:671
Tropilaelaps clareae honeybee mite arthropod mite not present high USDA Plant/Pest
Trogoderma granarium khapra beetle arthropod beetle not present moderate CDFA (reg. A)
Tripleurospermum perforatum scentless false mayweed plant herbaceous not present low CO Weed List
Triphragmiopsis laricinum Brown Needle Rust disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Trioza tripunctata blackberry psyllid arthropod scale, aphid not present moderate CDFA (reg. A)
Trioza erytreae African citrus psyllid arthropod scale, aphid limited n/a (already in CA) CDFA (reg. A)
Trionyx spiniferus Spiny softshell vertebrate reptile VALUE REQUIRED n/a (already in CA) DFG Code 2118
Trifolium hirtum rose clover plant herbaceous widespread n/a (already in CA) Cal-IPC list
Tridax procumbens coat buttons plant herbaceous not present low USDA Plant/Pest
Trichovirus spp Quince Stunt Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Trichovirus pvt Potato Virus T disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Trichovirus ginv Grapevine Berry Inner Necrosis Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Trichovirus crmv Cherry Rusty Mottle Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Trichovirus aclsv Apple Chlorotic Leafspot Virus disease virus VALUE REQUIRED VALUE REQUIRED No list
Trichosurus vulpecula Brush-tailed possum vertebrate mammal not present low Lacey Act
Trichodinella epizootica Protozoic parasite of fish invertebrate nematode VALUE REQUIRED VALUE REQUIRED No list
Tribulus terrestris puncturevine plant herbaceous widespread n/a (already in CA) CDFA
Trialeurodes floridensis avocado whitefly arthropod scale, aphid not present high CDFA (reg. A)
Trapa natans water-chestnut plant herbaceous not present moderate AZ Weed List
Trapa bicornis water caltrap plant herbaceous not present low WA Weed List
Tranes internatus macrozamia borer arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Trametes versicolor Wood decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA pest
Trachysphaera fructigena Mealy Pod Diseases of Cushy Gall Disease disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Trachemys scripta elegans Red-eared slider vertebrate reptile limited n/a (already in CA) Cal Code 14:671
Toxotrypana curvicauda papaya fruit fly arthropod fly not present moderate CDFA (reg. A)
Toxoptera citricida Brown citrus aphid arthropod scale, aphid not present high CDFA (reg. A)
Toumeyella liriodendri tuliptree scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Tospoviruses Tomato spot wilt virus disease virus limited VALUE REQUIRED APHIS OPIS
Tospovirus cacv Capsicum chlorosis virus disease virus not present VALUE REQUIRED No list
Torilis arvensis hedgeparsley plant herbaceous widespread n/a (already in CA) Cal-IPC list
Tomicus piniperda pine shoot beetle arthropod beetle not present high CDFA (reg. A)
Tombusvirus galv Grapevine Algerian Latent Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tombusviridae of unknown genus Chlorotic Ringspot Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tomato Yellow Leaf Curl Sardinia Virus, TYLCSV Tomato Yellow Leaf Curl Sardinia Virus disease virus not present VALUE REQUIRED No list
Tischeria marginata moth arthropod butterfly, moth not present low CDFA (reg. A)
Tipula paludosa European crane fly arthropod fly limited n/a (already in CA) CDFA (reg. B)
Tipula oleracea common crane fly arthropod fly not present low CDFA (reg. B)
Tilletia tritici (caries) Wheat smut disease fungus not present moderate EPPO
Tilletia (neovossia) indica Karnal bunt disease fungus limited n/a (already in CA) EPPO
Tildenia gudmannella pepper flower bud moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Tiaris olivacea Yellow-faced grassquit vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Thyridopteryx ephemeraeformis bagworm arthropod butterfly, moth not present high CDFA (reg. A)
Thymelaea passerina spurge flax plant herbaceous not present moderate WA Weed List
Thrips palmi melon thrips arthropod thrips not present high CDFA (reg. A)
Thrips florum banana flower thrips arthropod thrips not present high CDFA (reg. A)
Thrips angusticeps cabbage thrips arthropod thrips not present high CDFA (reg. A)
Threskiornis aetheopicus Sacred Ibis vertebrate bird not present high Cal Code 14:671
Thecaphora (Angiosorus) solani Potato smut disease fungus not present low EPPO
Thaumatotibia leucotreta False codling moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Tetranychus evansi red spider mite arthropod mite limited n/a (already in CA) CDFA (reg. B)
Tetraleurodes spp. redbanded whitefly arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Tetragallus himalayensis Himalayan snowcock vertebrate bird VALUE REQUIRED VALUE REQUIRED Harmful U.S. NIS
Teredo barstschi Shipworm invertebrate aquatic mollusk, marine VALUE REQUIRED VALUE REQUIRED IMEAC
Tenuivirus rwsv Rice Wilted Stunt Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tenuivirus mmcsv Maize Mottle/Chlorotic Stunt Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tenuivirus ewsmv European Wheat Striate Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Tarentola mauritanica Moorish gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Tarentola annularis Ringed wall gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Tanacetum vulgare common tansy plant herbaceous limited n/a (already in CA) Cal-IPC list
Tamarix ramosissima saltcedar plant woody widespread n/a (already in CA) Cal-IPC list
Tamarix parviflora smallflower tamarisk plant woody widespread n/a (already in CA) Cal-IPC list
Tamarix chinensis salt cedar plant woody limited n/a (already in CA) CO Weed List
Tamarix aphylla athel tamarisk plant woody limited n/a (already in CA) Cal-IPC list
Tagetes minuta wild marigold plant herbaceous not present moderate CDFA
Taeniatherum caput-medusae medusahead plant grass widespread n/a (already in CA) CDFA
Syrmaticus reevesii Reeve’s pheasant vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Syngrapha epigaea inscribed looper moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Synchytrium endobioticum Potato Wart/Select Agent disease fungus not present low EPPO
Symphytum asperum rough comfrey plant herbaceous limited n/a (already in CA) CDFA
Sweetpotato chlorotic stunt virus Sweetpotato chlorotic stunt virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Sus scrofa Feral pig vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Styela clava Club sea squirt invertebrate crustaceans and tunicates widespread n/a (already in CA) Exoticsguide
Sturnus vulgaris European starling vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Sturnus roseus Pink starling vertebrate bird VALUE REQUIRED VALUE REQUIRED Lacey Act
Striga spp. witchweed plant herbaceous not present high USDA Plant/Pest
Striga asiatica witchweed plant herbaceous not present moderate CDFA
Streptopelia roseogrisea African collared dove vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Streptopelia decaocto Eurasian collared dove vertebrate bird not present high Cal Code 14:671
Streptopelia chinensis Spotted dove vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Stipa capensis Mediterranean steppegrass plant grass limited n/a (already in CA) Cal-IPC list
Stigmina deflectans Needlecast Disease disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Sternochetus mangiferae mango seed weevil arthropod beetle not present moderate USDA Plant/Pest
Stereum hiugense White Rot disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Stephanoderes hampei Coffee fungus disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Stenoma catenifer avocado seed moth arthropod butterfly, moth not present high CDFA (reg. A)
Stenolechia bathrodyas juniper gelechiid arthropod butterfly, moth limited n/a (already in CA) CDFA (reg. B)
Steneotarsonemus spinki panicle rice mite arthropod mite not present high CDFA (reg. A)
Steneotarsonemus ananas pineapple tarsonemid arthropod mite limited n/a (already in CA) CDFA (reg. B)
Stellaria media common chickweed plant herbaceous widespread n/a (already in CA) Weeds of CA
Spodoptera sunia Costa Rican armyworm arthropod butterfly, moth not present high CDFA (reg. A)
Spodoptera mauritia lawn armyworm arthropod butterfly, moth not present high CDFA (reg. A)