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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 Extentsort icon Risk of Introduction First Source
Tripleurospermum perforatum scentless false mayweed plant herbaceous not present low CO Weed List
Tussilago farfara coltsfoot plant herbaceous not present moderate OR Weed List
Urochloa panicoides liverseed grass plant grass not present high USDA Plant/Pest
Utricularia inflata swollen bladderwort plant herbaceous not present moderate WA Weed List
Vallisneria spp. eelgrass plant herbaceous not present high CDFA
Bacillus anthracis Anthrax disease bacterium not present moderate CDFA AHFSS
Ehrlichia ruminantium Heartwater; cowdriosis disease bacterium not present moderate Merck Vet Manual
Mycoplasma capricolum capripneumoniae Contagious Bovine Caprine Pleuropneumonia disease bacterium not present low Merck Vet Manual
Mycoplasma mycoides mycoides Bovine pleuropneumonia disease bacterium not present low Merck Vet Manual
Xylophilus ampelinus (Xanthomonas ampelina) Grapevine Bacterial Blight disease bacterium not present moderate EPPO
Xylella fastidiosa CVC Citrus/Select Agent (citrus variegated chlorosis strain) disease bacterium not present low APHIS OPIS
Acremonium (Cephalosporium) diospyri Persimmon Wilt disease fungus not present moderate ForestPests.org
Armillaria novae-zelandiae Armillaria Root Disease disease fungus not present low ForestPests.org
Colletotrichum coffeanum Brown Blight disease fungus not present low USDA Plant/Pest
Cronartium flaccidum Scotch Pine Blister Rust disease fungus not present low USDA Plant/Pest
Cryphonectria parasitica Chestnut blight disease fungus not present high ISSG Global InvS
Discula destructiva Dogwood Anthracnose disease fungus not present moderate ISSG Global InvS
Geomyces sp. White-Nose Syndrome of bats disease fungus not present low National IS Info
Microcyclus ulei South American Leaf Blight disease fungus not present low APSNet
Ophiostoma valdivianum Blue Stain of Beech disease fungus not present moderate ForestPathology
Peronosclerospora sacchari (philippinensis) Sugarcane Downy Mildew disease fungus not present low USDA Plant/Pest
Phakopsora meibomiae soybean rust disease fungus not present high APHIS OPIS
Phomopsis vaccinii Phomopsis soft rot disease fungus not present moderate Mycologia
Sclerophthora rayssiae var. zeae Brown Stripe Downy Mildew of Maize disease fungus not present moderate APHIS OPIS
Sirococcus clavigignenti-juglandacearum Butternut Canker disease fungus not present low ISSG Global InvS
Thecaphora (Angiosorus) solani Potato smut disease fungus not present low EPPO
Tilletia tritici (caries) Wheat smut disease fungus not present moderate EPPO
Phytophthora alni Alder Phytophthora disease oomycete not present moderate APHIS OPIS
Cuscuta australis Australian dodder plant herbaceous not present low CDFA
Cuscuta monogyna Eastern Dodder plant herbaceous not present low No list
Unknown pathogenic virus or prion 2 Chronic Wasting Disease (Cervids) disease unknown not present moderate CDFA AHFSS
Alphavirus eeev Eastern Equine Encephalitis Virus disease virus not present low Chavarria NRDC
Alphavirus veev Venezuelan Equine Encephalitis Virus disease virus not present low NIAID
Avulavirus ndv Exotic Newcastle Disease disease virus not present moderate CDFA AHFSS
Carlavirus Blueberry Scorch carlavirus disease virus not present moderate EPPO
Potyvirus ppv Plum Pox Virus disease virus not present high APHIS OPIS
Birnaviridae fam: unknown Citrus Chlorotic Dwarf Virus disease virus not present low EFSA
Badnavirus cymvr Citrus yellow mosaic virus disease virus not present low EFSA
Nepovirus gtrsv Grapevine Tunisian Ringspot Virus disease virus not present low APHIS OPIS
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
Anomala sulcatula Anomala sulcatula arthropod beetle not present moderate USDA Plant/Pest
Capua tortrix Capua tortrix arthropod butterfly, moth not present low 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
Megalometis chilensis Megalometis chilensis arthropod beetle not present moderate USDA Plant/Pest
Proeulia spp. Proeulia spp. arthropod butterfly, moth not present low USDA Plant/Pest
Digitaria abyssinica Digitaria abyssinica plant grass not present moderate OR Weed List
Bunyavirus (TZSV) Tomato zonate spot virus (TZSV) disease virus not present low NISIC
Dickeya solani Black leg disease of potato disease bacterium not present moderate EPPO
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
Agkistrodon spp. Copperhead snake vertebrate reptile not present low DFG Code 2118
Erinaceus europaeus European hedgehog vertebrate mammal not present low Cal Code 14:671
Begomovirus (ToTV) Tomato Torrado Virus (ToTV) disease virus not present moderate EPPO
Phytophthora alni Alder Phytophthora disease fungus not present low NAPPO
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
Cichlasoma salvini Yellowbelly cichlid vertebrate fish not present low Cal Code 14:671
Quadrastichus erythrinae Erythrnia gall wasp arthropod bee, wasp not present high FL Dept. of Ag
Bactrocera cucurbitae melon fly arthropod fly not present low CDFA (reg. A)
Mylopharyngodon piceus Black Carp vertebrate fish not present high Cal Code 14:671
Hypophthalmichthys harmandi Largescale Carp vertebrate fish not present moderate Cal Code 14:671
Hypophthalmichthys molitrix Silver Carp vertebrate fish not present moderate Cal Code 14:671
Lepisosteus osseus Longnose Gar vertebrate fish not present moderate Cal Code 14:671
Dorosoma cepedianum Gizzard shad vertebrate fish not present low Cal Code 14:671
Monopterus albus Asian swamp eel vertebrate fish not present low 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
Novirhadovirus Viral Hemorrhagic Septicemia Virus (VHSV) Viral Hemorragic septicemia disease virus not present moderate National IS Info
Alyssum murale yellowtuft plant herbaceous not present moderate OR Weed List
Alyssum corsicum yellowtuft plant herbaceous not present moderate OR Weed List
Anomala undulata scarab beetle arthropod beetle unknown low CDFA (reg. A)
Dasineura leguminicola clover seed midge arthropod fly unknown VALUE REQUIRED CDFA (reg. A)
Eumerus aurifrons exotic bulb fly arthropod fly unknown VALUE REQUIRED CDFA (reg. A)
Hemicycliophora arenaria sheath nematode invertebrate nematode unknown n/a (already in CA) CDFA (reg. A)
Pratylenchus coffeae root-lesion nematode invertebrate nematode unknown moderate CDFA (reg. C)
Rhagoletis spp. exotic fruit fly arthropod fly unknown moderate CDFA (reg. A)
Caulacanthus ustulatus red algae plant algae unknown VALUE REQUIRED Hoffman NOAA
Geosmithia sp. Thousand Cankers Disease Complex disease fungus unknown high National IS Info
Caulerpa brachypus Caulerpa brachypus plant algae unknown high Hoffman NOAA
Pseudocheirus peregrinus Ring-tailed possum vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Saimiri sciureus Squirrel monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Cercopithecus aethiops Vervet monkey vertebrate mammal VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Macaca fascicularis Crab-eating Monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED ISSG 100WorstIAS
Macaca fuscata Japanese macaque vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Macaca mulatto Rhesus monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Molossus molossus Pallas’s mastiff bat vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Oryctolagus cuniculus European rabbit vertebrate mammal VALUE REQUIRED n/a (already in CA) Lacey Act
Lepus europaeus European hare vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Lepus townsendii White-tailed jackrabbit vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Sciurus aberti Abert’s squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Sciurus aureogaster Mexican red-bellied squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Sciurus carolinensis Gray squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED ISSG 100WorstIAS
Sciurus niger Fox squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED ISSG 100WorstIAS
Sciurus vulgaris Red squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Clethrionomys rutilus Red-backed vole vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al