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 | |
|---|---|---|---|---|---|---|---|
| Ophiostoma ips | Blue Stain Fungus | disease | fungus | VALUE REQUIRED | VALUE REQUIRED | USDA Plant/Pest | |
| Ophiostoma valdivianum | Blue Stain of Beech | disease | fungus | not present | moderate | ForestPathology | |
| Aratinga acuticaudata | Blue-crowned parakeet | vertebrate | bird | VALUE REQUIRED | n/a (already in CA) | FL FWCC NNS List | |
| Cichlasoma spilurum | Blue-eyed cichlid | vertebrate | fish | not present | high | Cal Code 14:671 | |
| Amazona aestiva | Blue-fronted Amazon | vertebrate | bird | VALUE REQUIRED | VALUE REQUIRED | FL FWCC NNS List | |
| Aratinga cruentata | Blue-fronted conure | vertebrate | bird | VALUE REQUIRED | VALUE REQUIRED | Witmer et al | |
| Rhagoletis mendax | blueberry maggot | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Carlavirus | Blueberry Scorch carlavirus | disease | virus | not present | moderate | EPPO | |
| Orbivirus btv | Bluetongue | disease | virus | limited | n/a (already in CA) | Iowa State Univ | |
| Helianthus ciliaris | blueweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Limnophila sessiliflora | blume (ambulia) | plant | herbaceous | not present | moderate | CDFA | |
| Polygonum x bohemicum | Bohemian knotweed | plant | herbaceous | not present | moderate | WA Weed List | |
| Anthonomus grandis grandis | boll weevil | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Saponaria officinalis | bouncingbet | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Mycoplasma mycoides mycoides | Bovine pleuropneumonia | disease | bacterium | not present | low | Merck Vet Manual | |
| Unknown pathogenic virus or prion 1 | Bovine spongiform encephalopathy (BSE) | disease | unknown | not present | low | Iowa State Univ | |
| Mycobacterium bovis | Bovine tuberculosis | disease | bacterium | limited | n/a (already in CA) | Iowa State Univ | |
| Amia calva | Bowfin | vertebrate | fish | not present | high | Cal Code 14:671 | |
| Pinnaspis buxi | boxwood scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Ramphotyphlops braminus | Brahminy blind snake | vertebrate | reptile | VALUE REQUIRED | VALUE REQUIRED | FL FWCC NNS List | |
| Orobanche ramosa | branched broomrape | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Cotula coronopifolia | brassbuttons | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Egeria densa | Brazilian egeria | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Schinus terebinthifolius | Brazilian peppertree | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Imperata brasiliensis | Brazilian satintail | plant | grass | not present | low | USDA Plant/Pest | |
| Retama monosperma | bridal broom | plant | woody | limited | n/a (already in CA) | CDFA | |
| Asparagus asparagoides | bridal creeper | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Picris echioides | bristly oxtongue | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Antechinus spp. | Broad-footed marsupial mouse | vertebrate | mammal | VALUE REQUIRED | VALUE REQUIRED | OR ISC Worst 100 | |
| Erodium botrys | broadleaf filaree | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Melaleuca quinquenervia | broadleaf paper bard tree | plant | woody | not present | low | USDA Plant/Pest | |
| Rymovirus bstv | Brome Streak Mosaic Virus | disease | virus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Metamasius spp. | bromeliad weevils | arthropod | beetle | not present | moderate | USDA Plant/Pest | |
| Orobanche spp. | broomrape | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Anolis sagrei | Brown anole | vertebrate | reptile | not present | high | Cal Code 14:671 | |
| Basiliscus vittatus | Brown basilisk | vertebrate | reptile | VALUE REQUIRED | VALUE REQUIRED | FL FWCC NNS List | |
| Colletotrichum coffeanum | Brown Blight | disease | fungus | not present | low | USDA Plant/Pest | |
| Leptoglossus chilensis | brown Chilean leaf-footed bug | arthropod | scale, aphid | not present | moderate | USDA Plant/Pest | |
| Toxoptera citricida | Brown citrus aphid | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Centaurea jacea | brown knapweed | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| Halyomorpha halys | Brown marmorated stink bug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Triphragmiopsis laricinum | Brown Needle Rust | disease | fungus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Phellinus noxius | Brown root rot | disease | fungus | VALUE REQUIRED | VALUE REQUIRED | USDA Plant/Pest | |
| Monilinia fructigena | Brown Rot of Fruit | disease | fungus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Mycosphaerella dearnesii | Brown Spot Needle Blight | disease | fungus | VALUE REQUIRED | VALUE REQUIRED | USDA Plant/Pest | |
| Physoderma zeae-maydis | Brown Spot of Corn | disease | fungus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Cochliobolus miyabeanus | Brown Spot of Rice | disease | fungus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Schlerophthora rayssiae var zeae | Brown Stripe Downy mildew of corn/Select Agent | disease | oomycete | not present | VALUE REQUIRED | No list | |
| Sclerophthora rayssiae var. zeae | Brown Stripe Downy Mildew of Maize | disease | fungus | not present | moderate | APHIS OPIS | |
| Boiga irregularis | Brown treesnake | vertebrate | reptile | not present | high | Cal Code 14:671 | |
| Molothrus ater | Brown-headed cowbird | vertebrate | bird | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Aratinga pertinax | Brown-throated conure | vertebrate | bird | VALUE REQUIRED | VALUE REQUIRED | FL FWCC NNS List | |
| Euproctis chrysorrhoea | browntail moth | arthropod | butterfly, moth | not present | low | CDFA (reg. A) | |
| Phascogale spp. | Brush-tailed marsupial mouse | vertebrate | mammal | VALUE REQUIRED | VALUE REQUIRED | OR ISC Worst 100 | |
| Trichosurus vulpecula | Brush-tailed possum | vertebrate | mammal | not present | low | Lacey Act | |
| Yersinia pestis | Bubonic Plague | disease | bacterium | widespread | n/a (already in CA) | NIAID | |
| Plantago lanceolata | buckhorn plantain | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Melopsittacus undulatus | Budgerigar | vertebrate | bird | VALUE REQUIRED | VALUE REQUIRED | FL FWCC NNS List | |
| Solanum rostratum | buffalobur | plant | herbaceous | limited | n/a (already in CA) | ID Weed List | |
| Pennisetum ciliare | buffelgrass | plant | grass | limited | n/a (already in CA) | AZ Weed List | |
| Watsonia meriana | bulbil watsonia | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Malva niaceensis | bull mallow | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Cirsium vulgare | bull thistle | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Python molurus | Burmese python | vertebrate | reptile | not present | moderate | Cal Code 14:671 | |
| Radopholus similis | Burrowing Nematode | invertebrate | nematode | not present | moderate | CDFA (reg. A) | |
| Leiolepis belliana | Butterfly lizard | vertebrate | reptile | VALUE REQUIRED | VALUE REQUIRED | FL FWCC NNS List | |
| Buddleja davidii | butterflybush | plant | woody | limited | n/a (already in CA) | OR Weed List | |
| Sirococcus clavigignenti-juglandacearum | Butternut Canker | disease | fungus | not present | low | ISSG Global InvS | |
| Conotrachelus juglandis | butternut curculio | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Mamestra brassicae | cabbage moth | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Thrips angusticeps | cabbage thrips | arthropod | thrips | not present | high | CDFA (reg. A) | |
| Aleyrodes proletella | cabbage whitefly | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Cactoblasis cactorum | cactus moth | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Medicago polymorpha | California burclover | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Aonidiella aurantii | California red scale | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Zantedeschia aethiopica | calla lily | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Orthopoxvirus cmlv | Camel Pox Virus | disease | virus | VALUE REQUIRED | VALUE REQUIRED | Chavarria NRDC | |
| Alhagi maurorum | camelthorn | plant | woody | limited | n/a (already in CA) | NV Weed List | |
| Cirsium arvense | Canada thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Phoenix canariensis | Canary Island date palm | plant | woody | limited | n/a (already in CA) | No list | |
| Hypericum canariense | Canary Island hypericum | plant | woody | limited | n/a (already in CA) | CDFA | |
| Brotogeris versicolurus | Canary-winged parakeet | vertebrate | bird | VALUE REQUIRED | VALUE REQUIRED | FL FWCC NNS List | |
| Coniothyrium spp. | canker in elm | disease | fungus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Apis mellifera capensis | Cape honeybee | arthropod | bee, wasp | not present | high | USDA Plant/Pest | |
| Homeria spp. | cape tulip | plant | herbaceous | not present | low | USDA Plant/Pest | |
| Delairea odorata | Cape-ivy | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Tospovirus cacv | Capsicum chlorosis virus | disease | virus | not present | VALUE REQUIRED | No list | |
| Capua tortrix | Capua tortrix | arthropod | butterfly, moth | not present | low | USDA Plant/Pest | |
| Anastrepha suspensa | Caribbean fruit fly | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Euphorbia terracina | carnation spurge | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Ectomyelois ceratoniae | carob moth | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. B) | |
| Cabomba caroliniana | Carolina fanwort | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Solanum carolinense | Carolina horsenettle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Psila rosae | carrot rust fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. B) | |
| Bigeminvirus acmv | Cassava African Mosaic Virus | disease | virus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Xanthomonas axonopodis manihotis | Cassava Bacterial Blight | disease | bacterium | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Ipomovirus cbsv | Cassava Brown Streak Virus | disease | virus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Carlavirus casmmv | Cassava Common Mosaic Virus | disease | virus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Nepovirus csalv | Cassava Latent Virus | disease | virus | VALUE REQUIRED | VALUE REQUIRED | APHIS OPIS | |
| Phenococcus manihoti | cassava mealybug | arthropod | scale, aphid | not present | moderate | USDA Plant/Pest |
