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 Introduction |
First Source | |
|---|---|---|---|---|---|---|---|
| Euphyllura olivina | olive psyllid | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Eupteryx decemnotata | Ligurian leafhopper | arthropod | scale, aphid | limited | n/a (already in CA) | FL Dept. of Ag | |
| Eutetranychus banksi | Texas citrus mite | arthropod | mite | limited | n/a (already in CA) | CDFA (reg. B) | |
| Ferrisia consobrina | mealybug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Ferrisia gilli | Gill’s mealybug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Ferrisia malvastra | malvastrum mealybug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Ferrisia virgata | striped mealybug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Halyomorpha halys | Brown marmorated stink bug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Harrisina brillians | western grapeleaf skeletonizer | arthropod | butterfly, moth | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Hemicycliophora arenaria | sheath nematode | invertebrate | nematode | unknown | n/a (already in CA) | CDFA (reg. A) | |
| Homaledra sabalella | palm leafskeletonizer | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. B) | |
| Homalodisca vitripennis | glassy-winged sharpshooter | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Hylastinus obscurus | clover root borer | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Hyperoides humilis | weevil | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Inopus rubriceps | Australian sod fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. B) | |
| Lepidosaphes beckii | purple scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Lepidosaphes maskelli | Maskell scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Leucoma salicis | satin moth | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. B) | |
| Liriomyza huidobrensis | pea leafminer | arthropod | fly | widespread | n/a (already in CA) | CDFA (reg. A) | |
| Lobesia botrana | European Grapevine Moth | arthropod | butterfly, moth | limited | n/a (already in CA) | USDA Plant/Pest | |
| Maconellicoccus hirsutus | Pink hibiscus mealybug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. A) | |
| Melanaspis obscura | obscure scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Naupactus leucoloma | whitefringed beetle | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Naupactus spp. | whitefringed beetles | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Pachynematus extensicornis | grass sawfly | arthropod | bee, wasp | limited | n/a (already in CA) | CDFA (reg. B) | |
| Parlatoria pergandii | chaff scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Pectinophora gossypiella | pink bollworm | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. A) | |
| Phoracantha spp. | eucalyptus (longhorned) borer | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Phyllophaga spp. | white grubs | arthropod | beetle | limited | n/a (already in CA) | USDA Plant/Pest | |
| Phytalus spp. | white grubs | arthropod | beetle | limited | n/a (already in CA) | USDA Plant/Pest | |
| Phytomyza ilicicola | native holly leafminer | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. B) | |
| Phytomyza ilicis | holly leafminer | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. B) | |
| Planococcus ficus | vine mealybug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Protopulvinaria pyriformis | pyriform scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Pseudacysta perseae | avocado lace bug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Pseudaulacaspis cockerelli | magnolia white scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. A) | |
| Psila rosae | carrot rust fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. B) | |
| Pulvinaria psidii | green shield scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Pulvinaria urbicola | urban soft scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Rhagoletis indifferens | western cherry fruit fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. A) | |
| Rhagoletis pomonella | apple maggot | arthropod | fly | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Rhopalomyzus poae | grass aphid | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Rhyacionia frustrana | Nantucket pine tip moth | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. B) | |
| Scapteriscus borellii | southern mole cricket | arthropod | grasshopper, cricket | limited | n/a (already in CA) | CDFA (reg. B) | |
| Siteroptes graminum | grass mite | arthropod | mite | limited | n/a (already in CA) | CDFA (reg. B) | |
| Sitodiplosis mosellana | wheat midge | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. A) | |
| Solenopsis invicta | red imported fire ant | arthropod | bee, wasp | limited | n/a (already in CA) | CDFA (reg. A) | |
| Steneotarsonemus ananas | pineapple tarsonemid | arthropod | mite | limited | n/a (already in CA) | CDFA (reg. B) | |
| Stenolechia bathrodyas | juniper gelechiid | arthropod | butterfly, moth | 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) | |
| Tetranychus evansi | red spider mite | arthropod | mite | limited | n/a (already in CA) | CDFA (reg. B) | |
| Tipula paludosa | European crane fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. B) | |
| Toumeyella liriodendri | tuliptree scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Tranes internatus | macrozamia borer | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Trioza erytreae | African citrus psyllid | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. A) | |
| Tylenchulus semipenetrans | citrus nematode | invertebrate | nematode | widespread | n/a (already in CA) | CDFA (reg. C) | |
| Unaspis euonymi | euonymus scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Varroa jacobsoni | varroa mite | arthropod | mite | widespread | n/a (already in CA) | USDA Plant/Pest | |
| Xyleborus pfeili | ambrosia beetle | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Zabrotes spp. | bean weevil | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Zabrotes subfasciatus | Mexican bean weevil | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| 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 | |
| Corbicula fluminea | Asian clam | invertebrate | aquatic mollusk, freshwater | widespread | n/a (already in CA) | ANSTF | |
| Potamopyrgus antipodarum | New Zealand mudsnail | invertebrate | aquatic mollusk, freshwater | limited | n/a (already in CA) | CAISMP | |
| Busycotypus canaliculatus | Channeled whelk | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Ilynassa obsoleta | Eastern mudsnail | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Littorina saxatilis | Rough periwinkle | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Myosotella myosotis | Mouse-ear marshsnail | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Urosalpinx cinerea | Atlantic oyster drill | invertebrate | aquatic mollusk, marine | widespread | n/a (already in CA) | Exoticsguide | |
| Geukensia demissa | Ribbed horsemussel | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Musculista senhousia | Green bagmussel | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Mya arenaria | Soft-shell clam | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Corbula amurensis | Overbite clam | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Venerupsis phillipinarus | Japanese littleneck clam | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | Exoticsguide | |
| Carcinus maenas | Green crab | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | NISIC | |
| Eriocher sinensis | Chinese mitten crab | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | CAISMP | |
| Botrylloides violaceus | Chain sea squirt | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | Exoticsguide | |
| Didemnum vexillum | Sea squirt | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | Exoticsguide | |
| Styela clava | Club sea squirt | invertebrate | crustaceans and tunicates | widespread | n/a (already in CA) | Exoticsguide | |
| Botryllus schlosseri | Star sea squirt | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | Exoticsguide | |
| Balanus amphitrite | Striped barnacle | invertebrate | crustaceans and tunicates | limited | n/a (already in CA) | Exoticsguide | |
| Bugula neritina | Moss animal | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Cryptosula pallasiana | Moss animal | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Watersipora subtorquata | Moss animal | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Clathria polifera | Red beard sponge | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Diadumene lineata | Orange-stripped anemone | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Ficopomatus enigmaticus | Sea worms | invertebrate | other | limited | n/a (already in CA) | Exoticsguide | |
| Didelphis marsupialis | Opossum | vertebrate | mammal | widespread | n/a (already in CA) | DFG Code 2118 | |
| Cercopithecus aethiops | Vervet monkey | vertebrate | mammal | VALUE REQUIRED | n/a (already in CA) | FL FWCC NNS List | |
| Oryctolagus cuniculus | European rabbit | vertebrate | mammal | VALUE REQUIRED | n/a (already in CA) | Lacey Act | |
| Spermophilus parryii | Arctic ground squirrel | vertebrate | mammal | widespread | n/a (already in CA) | Witmer et al | |
| Rattus norvegicus | Norway rat | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Rattus rattus | Ship rat | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Mus musculus | House mouse | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Castor canadensis | Beaver | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Myocastor coypus | Nutria | vertebrate | mammal | limited | n/a (already in CA) | Cal Code 14:671 | |
| Vulpes vulpes | Red Fox | vertebrate | mammal | limited | n/a (already in CA) | Cal Code 14:671 | |
| Mustela putorius | European polecat or ferret | vertebrate | mammal | limited | n/a (already in CA) | Cal Code 14:671 | |
| Felis catus | Feral cat | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 |
