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 |
|
|---|---|---|---|---|---|---|---|
| Rhagoletis spp. | exotic fruit fly | arthropod | fly | unknown | moderate | CDFA (reg. A) | |
| Rhagoletis suavis | walnut husk fly | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Rhizotrogus majalis | European chafer | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Rhyacionia buoliana | European pine shoot moth | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Rhynchophorus ferrugineus | red palm weevil | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Rotylenchulus reniformis | Reniform Nematode | invertebrate | nematode | not present | moderate | CDFA (reg. A) | |
| Saccharicoccus sacchari | pink sugarcane mealybug | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| Sannina uroceriformis | persimmon borer | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Scotinophara lurida | rice stinkbug | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Scrobipalpa ocellatella | surgarbeet crown borer | arthropod | butterfly, moth | not present | low | CDFA (reg. A) | |
| Selenaspidus articulatus | rufous scale | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| Selenothrips rubrocinctus | redbanded thrips | arthropod | thrips | not present | high | CDFA (reg. A) | |
| Sesamia cretica | durra stalk borer | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Sinoxylon anale | dunnage beetle | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Sirex noctilio | sirex woodwasp | arthropod | bee, wasp | not present | moderate | CDFA (reg. A) | |
| Sitodiplosis mosellana | wheat midge | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. A) | |
| Sogatodes orizicola | rice delphacid | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| Solenopsis geminata | tropical fire ant | arthropod | bee, wasp | not present | high | CDFA (reg. A) | |
| Solenopsis invicta | red imported fire ant | arthropod | bee, wasp | limited | n/a (already in CA) | CDFA (reg. A) | |
| Solenopsis richteri X Solenopsis invicta hybrid | hybrid fire ant | arthropod | bee, wasp | not present | high | CDFA (reg. A) | |
| Solenopsis saevissima | red imported fire ant | arthropod | bee, wasp | not present | moderate | CDFA (reg. A) | |
| Sphenophorus maidis | maize billbug | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Spodoptera dolichos | armyworm | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Spodoptera eridania | southern armyworm | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Spodoptera exempta | nutgrass armyworm | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Spodoptera latifascia | lateral lined armyworm | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Spodoptera littoralis | Egyptian cottonworm | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Spodoptera mauritia | lawn armyworm | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Spodoptera sunia | Costa Rican armyworm | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Steneotarsonemus spinki | panicle rice mite | arthropod | mite | not present | high | CDFA (reg. A) | |
| Stenoma catenifer | avocado seed moth | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Syngrapha epigaea | inscribed looper moth | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Thaumatotibia leucotreta | False codling moth | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Thrips angusticeps | cabbage thrips | arthropod | thrips | not present | high | CDFA (reg. A) | |
| Thrips florum | banana flower thrips | arthropod | thrips | not present | high | CDFA (reg. A) | |
| Thrips palmi | melon thrips | arthropod | thrips | not present | high | CDFA (reg. A) | |
| Thyridopteryx ephemeraeformis | bagworm | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Tildenia gudmannella | pepper flower bud moth | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Tischeria marginata | moth | arthropod | butterfly, moth | not present | low | CDFA (reg. A) | |
| Tomicus piniperda | pine shoot beetle | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Toxoptera citricida | Brown citrus aphid | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Toxotrypana curvicauda | papaya fruit fly | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Trialeurodes floridensis | avocado whitefly | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Trioza erytreae | African citrus psyllid | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. A) | |
| Trioza tripunctata | blackberry psyllid | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| Trogoderma granarium | khapra beetle | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Typophorus nigritus viridicyaneus | sweetpotato leaf beetle | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Unaspis citri | citrus snow scale | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| Velataspis dentata | dentate scale | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| Xyleborinus andrewesi | Asian ambrosia beetle | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Xyleborus glabratus | Redbay ambrosia beetle | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Zeiraphera canadensis | spruce budworm | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Zeuzera pyrina | leopard moth | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Zonosemata electa | pepper maggot | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Zophodia convolutella | gooseberry fruitworm | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Zygogramma exclamationis | sunflower beetle | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Begomovirus (GEM2) | Tomato Yellow Leaf Curl Virus | disease | virus | limited | n/a (already in CA) | CDFA (reg. A) | |
| Planococcus minor (Maskell) | Passionvine mealybug | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Bactrocera cucurbitae | melon fly | arthropod | fly | not present | low | CDFA (reg. A) | |
| Zygophyllum fabago | Syrian beancaper | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Oryza rufipogon | red rice | plant | grass | limited | n/a (already in CA) | CDFA | |
| Euphorbia serrata | serrate spurge | plant | herbaceous | not present | moderate | CDFA | |
| Halimodendron halodendron | Russian salttree | plant | woody | not present | moderate | CDFA | |
| Helianthus ciliaris | blueweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Salsola collina | spineless Russian thistle | plant | herbaceous | not present | high | CDFA | |
| Salsola vermiculata | wormleaf salsola | plant | herbaceous | not present | low | CDFA | |
| Salvia virgata | southern meadow sage | plant | herbaceous | not present | moderate | CDFA | |
| Scolymus hispanicus | golden thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Senecio squalidus | Oxford ragwort | plant | herbaceous | not present | low | CDFA | |
| Solanum cardiophyllum | heartleaf nightshade | plant | herbaceous | not present | low | CDFA | |
| Solanum dimidiatum | Torrey's nightshade | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Solanum marginatum | white-margined nightshade | plant | woody | limited | n/a (already in CA) | CDFA | |
| Sonchus arvensis | perennial sowthistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Sphaerophysa salsula | Austrian peaweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Striga asiatica | witchweed | plant | herbaceous | not present | moderate | CDFA | |
| Tagetes minuta | wild marigold | plant | herbaceous | not present | moderate | CDFA | |
| Aegilops triuncialis | barb goatgrass | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Arctotheca calendula (sterile) | sterile capeweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Cabomba caroliniana | Carolina fanwort | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Cardaria draba | hoary cress | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cardaria pubescens | hairy whitetop | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Carduus pycnocephalus | Italian thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Carduus tenuiflorus | slenderflower thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Carthamus lanatus | woolly distaff thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cenchrus echinatus | southern sandbur | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Centaurea calcitrapa | purple starthistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Centaurea diffusa | diffuse knapweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Centaurea melitensis | Malta starthistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Centaurea solstitialis | yellow starthistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cirsium arvense | Canada thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Convolvulus arvensis | field bindweed | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cynara cardunculus | artichoke thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cynodon dactylon | bermudagrass | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Cyperus rotundus | purple nutsedge | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cytisus scoparius | Scotch broom | plant | woody | widespread | n/a (already in CA) | CDFA | |
| Gaura sinuata | wavy-leaved gaura | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Genista monspessulana | French broom | plant | woody | widespread | n/a (already in CA) | CDFA | |
| Hypericum perforatum | common St. John's wort | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Isatis tinctoria | dyer's woad | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Lepidium latifolium | perennial pepperweed | plant | herbaceous | widespread | n/a (already in CA) | CDFA |
