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 | |
|---|---|---|---|---|---|---|---|
| Melanaspis obscura | obscure scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Melittia calabaza | southwestern squash vine borer | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Melittia cucurbitae | squash vine borer | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Mesolecanium nigrofasciatum | terrapin scale | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| Metamasius spp. | bromeliad weevils | arthropod | beetle | not present | moderate | USDA Plant/Pest | |
| Mononychellus tanajoa | green spider mite | arthropod | mite | not present | moderate | USDA Plant/Pest | |
| Morganella longispina | plumose scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Mycetaspis spaerioides | armored scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Myllocerus undecimpustulatus undatus | Sri Lanka weevil | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Myndus crudus | American palm cixiid | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| 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) | |
| Naupactus xanthographus | South American fruit tree weevil | arthropod | beetle | not present | moderate | USDA Plant/Pest | |
| Neomaskellia bergii | sugarcane whitefly | arthropod | scale, aphid | not present | high | USDA Plant/Pest | |
| Nilotaspis halli | Hall scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Oebalus pugnax | rice stink bug | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Omphisa anastomosalis | sweetpotato vine borer | arthropod | beetle | not present | moderate | USDA Plant/Pest | |
| Ophiomyia phaseoli | bean fly | arthropod | fly | not present | low | CDFA (reg. A) | |
| Opogona sacchari | banana moth | arthropod | butterfly, moth | not present | high | USDA Plant/Pest | |
| Orgyia leucostigma | whitemarked tussock moth | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Orthotomicus erosus | Mediterranean pine engraver | arthropod | beetle | not present | high | CDFA (reg. B) | |
| Ostrinia nubilalis | European corn borer | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Oulema melanopus | cereal leaf beetle | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Pachynematus extensicornis | grass sawfly | arthropod | bee, wasp | limited | n/a (already in CA) | CDFA (reg. B) | |
| Pammene fasciana | chestnut leaf roller | arthropod | butterfly, moth | not present | low | USDA Plant/Pest | |
| Papaipema nebris | stalk borer | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Papilio demoleus | lime swallowtail | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Paratachardina pseudolobata | Lobate lac scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Parlatoria blanchardi | parlatoria date scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Parlatoria pergandii | chaff scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Parlatoria proteus | sanseveria scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Parlatoria pseudaspidiotus | vand orchid scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Parlatoria theae complex | tea paralatoria scale - species complex | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Parlatoria vandae | vanda paralatoria scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Parlatoria ziziphi | black citrus scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Pectinophora gossypiella | pink bollworm | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. A) | |
| Pectinophora scutigera | pink-spotted bollworm | arthropod | butterfly, moth | not present | high | USDA Plant/Pest | |
| Phenococcus aceris | apple mealybug | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Phenococcus manihoti | cassava mealybug | arthropod | scale, aphid | not present | moderate | USDA Plant/Pest | |
| Phloeotribus liminarius | peach bark beetle | arthropod | beetle | not present | high | CDFA (reg. B) | |
| Phoracantha spp. | eucalyptus (longhorned) borer | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Phyllophaga congrua | May beetle | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Phyllophaga spp. | white grubs | arthropod | beetle | limited | n/a (already in CA) | USDA Plant/Pest | |
| Phylloxera devastatrix | pecan phylloxera | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| 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) | |
| Pinnaspis buxi | boxwood scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Pinnaspis strachani | lesser snow scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Pissodes nemorensis | eastern pine weevil | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Planococcus ficus | vine mealybug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Planococcus lilacinus | coffee mealybug | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Plathypena scabra | green cloverworm | arthropod | butterfly, moth | not present | moderate | CDFA (reg. A) | |
| Poliaspis cycadis | Poliaspis cycad scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Popillia japonica | Japanese beetle | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Popillia lewisi | scarab beetle | arthropod | beetle | not present | high | CDFA (reg. A) | |
| Prays endocarpa | citrus pock caterpillar | arthropod | butterfly, moth | not present | low | USDA Plant/Pest | |
| Prostephanus truncatus | larger grain borer | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Protaetia fusca | mango flower beetle | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| Protaetia orientalis | oriental flower beetle | arthropod | beetle | not present | moderate | CDFA (reg. A) | |
| 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) | |
| Pseudaonidia paeoniae | peony scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Pseudaulacaspis cockerelli | magnolia white scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. A) | |
| Pseudaulacaspis pentagona | white peach scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Pseudococcus cryptus | citriculus mealybug | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Pseudococcus dendrobiorum | Orchid mealybug | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Pseudococcus elisae | banana mealybug | arthropod | scale, aphid | not present | low | CDFA (reg. A) | |
| Pseudococcus importatus | imported mealybug | arthropod | scale, aphid | not present | moderate | CDFA (reg. A) | |
| Pseudoparlatoria parlatoriodes | false paralatoria scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Psila rosae | carrot rust fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. B) | |
| Pterandrus spp. | fruit flies | arthropod | fly | limited | high | USDA Plant/Pest | |
| 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) | |
| Quadraspidiotus ostreaeformis | European fruit scale | arthropod | scale, aphid | not present | high | CDFA (reg. A) | |
| Raoiella indica | Red Palm Mite | arthropod | mite | not present | high | CDFA (reg. A) | |
| Rhabdoscelus obscurus | New Guinea sugarcane weevil | arthropod | beetle | not present | moderate | USDA Plant/Pest | |
| Rhagoletis boycei | walnut husk fly | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Rhagoletis cerasi | European cherry fruit fly | arthropod | fly | not present | low | CDFA (reg. A) | |
| Rhagoletis cingulata | cherry fruit fly | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Rhagoletis fausta | black cherry fruit fly | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Rhagoletis indifferens | western cherry fruit fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. A) | |
| Rhagoletis juglandis | walnut husk fly | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Rhagoletis mendax | blueberry maggot | arthropod | fly | not present | moderate | CDFA (reg. A) | |
| Rhagoletis pomonella | apple maggot | arthropod | fly | widespread | n/a (already in CA) | CDFA (reg. B) | |
| 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) | |
| Rhopalomyzus poae | grass aphid | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Rhyacionia buoliana | European pine shoot moth | arthropod | butterfly, moth | not present | high | CDFA (reg. A) | |
| Rhyacionia frustrana | Nantucket pine tip moth | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. B) | |
| Rhynchophorus ferrugineus | red palm weevil | arthropod | beetle | not present | high | 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) | |
| Scapteriscus borellii | southern mole cricket | arthropod | grasshopper, cricket | limited | n/a (already in CA) | CDFA (reg. B) | |
| 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) |
