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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
Emoia cyanura Copper-tailed skink vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Emex spinosa devil's-thorn plant herbaceous limited n/a (already in CA) Cal-IPC list
Emex australis three-cornered jack plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Elytroteinus subtruncatus Fijian ginger weevil arthropod beetle not present moderate USDA Plant/Pest
Elytrigia repens quackgrass plant grass widespread n/a (already in CA) CDFA
Elsinoe batatas sweet potato scab disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Elsinoe australis Sweet Orange Scab disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Eleutherodactylus planirostris Greenhouse frog vertebrate amphibian VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Eleutherodactylus coqui Coqui frog vertebrate amphibian not present high Cal Code 14:671
Elaeagnus angustifolia Russian-olive plant woody limited n/a (already in CA) Cal-IPC list
Eichhornia crassipes water hyacinth plant herbaceous widespread n/a (already in CA) Cal-IPC list
Eichhornia azurea anchored water hyacinth plant herbaceous not present low USDA Plant/Pest
Ehrlichia ruminantium Heartwater; cowdriosis disease bacterium not present moderate Merck Vet Manual
Ehrharta longiflora long-flowered veldtgrass plant grass limited n/a (already in CA) Cal-IPC list
Ehrharta erecta erect veldtgrass plant grass limited n/a (already in CA) Cal-IPC list
Ehrharta calycina purple veldtgrass plant grass widespread n/a (already in CA) Cal-IPC list
Egeria densa Brazilian egeria plant herbaceous widespread n/a (already in CA) Cal-IPC list
Ectomyelois ceratoniae carob moth arthropod butterfly, moth limited n/a (already in CA) CDFA (reg. B)
Echium vulgare common viper's bugloss plant herbaceous not present high WA Weed List
Echium plantagineum Paterson's curse plant herbaceous limited n/a (already in CA) OR Weed List
Echium candicans pride-of-Madeira plant herbaceous limited n/a (already in CA) Cal-IPC list
Echinochloa phyllopogon rice barnyardgrass plant grass limited n/a (already in CA) Weeds of CA
Echinochloa oryzicola early watergrass plant grass limited n/a (already in CA) Weeds of CA
Echinochloa colona jungle rice plant grass widespread n/a (already in CA) Weeds of CA
Earias fabia spotted bollworm arthropod butterfly, moth not present moderate USDA Plant/Pest
Dyspessa ulula onion carpenter worm arthropod butterfly, moth not present moderate USDA Plant/Pest
Dysmicoccus alazon alazon mealybug arthropod scale, aphid not present moderate CDFA (reg. A)
Dynaspidiotus britannicus holly scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Duponchelia fovealis pyralid moth arthropod butterfly, moth limited high CDFA (reg. A)
Dryocosmus kuriphilus chestnut gall wasp arthropod bee, wasp not present high USDA Plant/Pest
Drymaria arenarioides lightening weed plant herbaceous not present moderate USDA Plant/Pest
Drosophila suzukii Spotted Wing Drosophila arthropod fly widespread n/a (already in CA) CDFA Detect. Adv
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
Dorosoma cepedianum Gizzard shad vertebrate fish not present low Cal Code 14:671
Dittrichia graveolens stinkwort plant herbaceous widespread n/a (already in CA) Cal-IPC list
Discula destructiva Dogwood Anthracnose disease fungus not present moderate ISSG Global InvS
Dipsacus sativus fuller's teasel plant herbaceous widespread n/a (already in CA) Cal-IPC list
Dipsacus laciniatus cutleaf teasel plant herbaceous not present high CO Weed List
Dipsacus fullonum common teasel plant herbaceous widespread n/a (already in CA) Cal-IPC list
Diprion similis introduced pine sawfly arthropod bee, wasp not present high CDFA (reg. A)
Diocalandra taitensis Tahitian coconut weevil arthropod beetle not present moderate CDFA (reg. A)
Diocalandra spp. coconut weevils arthropod beetle not present moderate CDFA (reg. A)
Dinaspis aculeata armored scale arthropod scale, aphid not present moderate CDFA (reg. A)
Digitaria velutina velvet fingergrass plant grass not present moderate USDA Plant/Pest
Digitaria sanguinalis hairy crabgrass plant grass widespread n/a (already in CA) Weeds of CA
Digitaria abyssinica Digitaria abyssinica plant grass not present moderate OR Weed List
Digitalis purpurea foxglove plant herbaceous limited n/a (already in CA) Cal-IPC list
Didymosphenia geminata didymo plant algae limited high Hoffman NOAA
Didemnum vexillum Sea squirt invertebrate crustaceans and tunicates limited n/a (already in CA) Exoticsguide
Didelphis marsupialis Opossum vertebrate mammal widespread n/a (already in CA) DFG Code 2118
Dickeya solani Black leg disease of potato disease bacterium not present moderate EPPO
Dicistroviridae TSV Taura syndrome of shrimp; Infectious cuticular epithelial necrosis virus (ICENV) disease virus VALUE REQUIRED VALUE REQUIRED No list
Diatraea saccharalis sugarcane borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Diatraea grandiosella southwestern corn borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Diatraea crambidoides southern corn stalk borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Diastrophus radicum raspberry root gall wasp arthropod bee, wasp not present moderate CDFA (reg. A)
Diaspidiotus liquidambaris sweet gum scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Diaprepes sp. exotic weevil arthropod beetle not present high CDFA (reg. A)
Diaprepes abbreviatus Diaprepes root weevil arthropod beetle limited n/a (already in CA) CDFA (reg. A)
Diaporthe mali Leaf, Branch, and Fruit Disease disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Diaphorina citri Asian citrus psyllid arthropod scale, aphid limited n/a (already in CA) CDFA (reg. A)
Diaphania nitidalis pickleworm arthropod butterfly, moth limited n/a (already in CA) CDFA (reg. B)
Diaphania hyalinata melonworm arthropod butterfly, moth not present moderate CDFA (reg. A)
Diadumene lineata Orange-stripped anemone invertebrate other limited n/a (already in CA) Exoticsguide
Diabrotica virgifera zea Mexican corn rootworm arthropod beetle not present moderate CDFA (reg. A)
Diabrotica virgifera virgifera western corn rootworm arthropod beetle not present high CDFA (reg. A)
Diabrotica undecimpunctata howardi spotted cucumber beetle arthropod beetle not present high CDFA (reg. A)
Diabrotica barberi northern corn rootworm arthropod beetle not present high CDFA (reg. A)
Descurainia sophia flixweed plant herbaceous limited n/a (already in CA) Cal-IPC list
Dendrothrips ornatus privet thrips arthropod thrips limited n/a (already in CA) CDFA (reg. B)
Dendrobates auratus Green-and-black poison dart frog vertebrate amphibian VALUE REQUIRED VALUE REQUIRED Witmer et al
Delairea odorata Cape-ivy plant herbaceous widespread n/a (already in CA) Cal-IPC list
Daucus carota wild carrot plant herbaceous widespread n/a (already in CA) WA Weed List
Dasypus novemcinctus Nine-banded armadillo vertebrate mammal not present high Cal Code 14:671
Dasineura rhodophaga rose midge arthropod fly limited n/a (already in CA) CDFA (reg. B)
Dasineura leguminicola clover seed midge arthropod fly unknown VALUE REQUIRED CDFA (reg. A)
Darna pallivitta limacodid moth arthropod butterfly, moth not present high CDFA (reg. A)
Danothrips trifasciatus thrips arthropod thrips not present high CDFA (reg. B)
Dacus sp. exotic fruit fly arthropod fly not present moderate CDFA (reg. A)
Dacus cucurbitae Melon fruit fly arthropod fly not present low CDFA (reg. A)
Dacus bivittatus African pumpkin fly arthropod fly not present moderate CDFA (reg. A)
Dactylis glomerata orchardgrass plant grass widespread n/a (already in CA) Cal-IPC list
Cytorhabdovirus ncmv Northern Cereal Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED No list
Cytorhabdovirus bysmv Barley Yellow Striate Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Cytisus striatus Portuguese broom plant woody limited n/a (already in CA) Cal-IPC list
Cytisus scoparius Scotch broom plant woody widespread n/a (already in CA) CDFA
Cyrtopodion scabrum Rough-tailed gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Cyperus rotundus purple nutsedge plant herbaceous widespread n/a (already in CA) CDFA
Cyperus difformis variable flatsedge plant herbaceous limited n/a (already in CA) Weeds of CA
Cynosurus echinatus hedgehog dogtailgrass plant grass widespread n/a (already in CA) Cal-IPC list
Cynomys ludovicianus Prairie dog vertebrate mammal not present low CDFA Vert List
Cynoglossum officinale houndstongue plant herbaceous limited n/a (already in CA) Cal-IPC list
Cynodon dactylon bermudagrass plant grass widespread n/a (already in CA) CDFA
Cynara cardunculus artichoke thistle plant herbaceous widespread n/a (already in CA) CDFA
Cylas spp. exotic weevil arthropod beetle not present moderate CDFA (reg. A)
Cylas formicarius elegantulus sweetpotato weevil arthropod beetle not present high CDFA (reg. A)
Cygnus olor Mute swan vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Cydia splendana chestnut moth arthropod butterfly, moth not present high CDFA (reg. A)
Cydia funebrana red plum maggot arthropod butterfly, moth not present high USDA Plant/Pest