Invasive Species List
Species List Information
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.
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 | Link |
|---|---|---|---|---|---|---|
| Plasmodium falciparum | Malaria | disease | protist | |||
| Plasmodium knowlesi | Malaria | disease | protist | |||
| Plasmodium malariae | Malaria | disease | protist | |||
| Plasmodium ovale | Malaria | disease | protist | |||
| Plasmodium relictum | Avian malaria | disease | protist | |||
| Plasmodium vivax | Malaria | disease | protist | |||
| Plathypena scabra | green cloverworm | arthropod | butterfly, moth | not present | moderate | |
| Pleistophora hyphessobryconis | Neon-tetra disease of fish | invertebrate | nematode | |||
| Plum Bark Split Virus | Plum Bark Split Virus | disease | virus | |||
| Poa pratensis | Kentucky bluegrass | plant | grass | widespread | n/a (already in CA) | |
| Podarcis muralis | Common wall lizard | vertebrate | reptile | |||
| Podarcis sicula | Italian wall lizard | vertebrate | reptile | |||
| Poicephalus senegalus | Senegal parrot | vertebrate | bird | |||
| Poliaspis cycadis | Poliaspis cycad scale | arthropod | scale, aphid | not present | high | |
| Polygonum arenastrum | oval leaf knotweed | plant | herbaceous | widespread | n/a (already in CA) | |
| Polygonum cuspidatum | Japanese knotweed | plant | woody | limited | n/a (already in CA) | View Scorecard |
| Polygonum polystachyum | Himalayan knotweed | plant | herbaceous | limited | n/a (already in CA) | |
| Polygonum sachalinense | Sakhalin knotweed | plant | herbaceous | limited | n/a (already in CA) | |
| Polygonum x bohemicum | Bohemian knotweed | plant | herbaceous | not present | moderate | |
| Polypogon monspeliensis and subspp. | rabbitfoot polypogon | plant | grass | widespread | n/a (already in CA) | |
| Pontederia cordata | pickerelweed | plant | herbaceous | not present | moderate | |
| Popillia japonica | Japanese beetle | arthropod | beetle | not present | high | View Scorecard |
| Popillia lewisi | scarab beetle | arthropod | beetle | not present | high | |
| Porcine herpesvirus 1 | Swine pseudorabies | disease | virus | not present | View Scorecard | |
| Porphyrio porphyrio | Purple Swamphen | vertebrate | bird | not present | high | |
| Portulaca oleracea | common purslane | plant | herbaceous | widespread | n/a (already in CA) | |
| Potamocorbula amurensis | Overbite clam | invertebrate | aquatic mollusk, marine | limited | n/a (already in CA) | |
| Potamogeton crispus | curlyleaf pondweed | plant | herbaceous | widespread | n/a (already in CA) | View Scorecard |
| Potamopyrgus antipodarum | New Zealand mudsnail | invertebrate | aquatic mollusk, freshwater | limited | n/a (already in CA) | View Scorecard |
| Potentilla recta | sulfur cinquefoil | plant | herbaceous | limited | n/a (already in CA) | View Scorecard |
| Potexvirus (?) or Potyvirus (?) | Potato veinal necrosis virus (PVYN) | disease | virus | |||
| Potexvirus gcsv | Groundnut Chlorotic Spotting Virus | disease | virus | |||
| Potos flavus | Kinkajou | vertebrate | mammal | |||
| Potyvirus bcmv | Azuki bean mosaic virus | disease | virus | |||
| Potyvirus cdv | Datura Colombian Virus | disease | virus | |||
| Potyvirus ddmv | Datura Distortion Mosaic Virus | disease | virus | |||
| Potyvirus demv | Datura Enation Mosaic Virus | disease | virus | |||
| Potyvirus ppv | Plum Pox Virus | disease | virus | not present | high | View Scorecard |
| Potyvirus pvv | Potato Virus V | disease | virus | |||
| Potyvirus pvy | Potato Virus Y | disease | virus | |||
| Potyviruses: Potyviridae | Plum pox | disease | virus | not present | moderate | |
| Pratylenchus coffeae | root-lesion nematode | invertebrate | nematode | unknown | moderate | View Scorecard |
| Prays endocarpa | citrus pock caterpillar | arthropod | butterfly, moth | not present | low | |
| Proboscidea louisianica | unicorn-plant | plant | herbaceous | widespread | n/a (already in CA) | |
| Proeulia spp. | Proeulia spp. | arthropod | butterfly, moth | not present | low | |
| Prosopis alpataco | mesquite | plant | woody | not present | low | |
| Prosopis argentina | mesquite | plant | woody | not present | low | |
| Prosopis articulata | mesquite | plant | woody | not present | low | |
| Prosopis burkartii | mesquite | plant | woody | not present | low | |
| Prosopis caldenia | mesquite | plant | woody | not present | low | |
| Prosopis calingastana | cusqui | plant | woody | not present | low | |
| Prosopis campestris | mesquite | plant | woody | not present | low | |
| Prosopis castellanosii | mesquite | plant | woody | not present | low | |
| Prosopis denudans | mesquite | plant | woody | not present | low | |
| Prosopis elata | mesquite | plant | woody | not present | low | |
| Prosopis farcta | mesquite | plant | woody | not present | low | |
| Prosopis ferox | mesquite | plant | woody | not present | low | |
| Prosopis fiebrigii | mesquite | plant | woody | not present | low | |
| Prosopis fiebrigii or Closterovirus wylv ? | Wheat Yellow Leaf Virus | disease | virus | |||
| Prosopis hassleri | mesquite | plant | woody | not present | low | |
| Prosopis humilis | mesquite | plant | woody | not present | low | |
| Prosopis kuntzei | mesquite | plant | woody | not present | low | |
| Prosopis pallida | mesquite | plant | woody | not present | low | |
| Prosopis palmeria | mesquite | plant | woody | not present | low | |
| Prosopis reptans | mesquite | plant | woody | not present | low | |
| Prosopis rojasiana | mesquite | plant | woody | not present | low | |
| Prosopis ruizlealii | mesquite | plant | woody | not present | low | |
| Prosopis ruscifolia | mesquite | plant | woody | not present | low | |
| Prosopis sericantha | mesquite | plant | woody | not present | low | |
| Prosopis strombulifera | creeping mesquite | plant | woody | not present | moderate | |
| Prosopis torquata | mesquite | plant | woody | not present | low | |
| Prosopis velutina | mesquite | plant | woody | limited | n/a (already in CA) | |
| Prostephanus truncatus | larger grain borer | arthropod | beetle | not present | moderate | |
| Protaetia fusca | mango flower beetle | arthropod | beetle | not present | moderate | |
| Protaetia orientalis | oriental flower beetle | arthropod | beetle | not present | moderate | |
| Protopalina symphysodonis | Protopalina symphysodonis infection of fish | invertebrate | nematode | |||
| Protopulvinaria pyriformis | pyriform scale | arthropod | scale, aphid | limited | n/a (already in CA) | |
| Prunus cerasifera | cherry plum | plant | woody | widespread | n/a (already in CA) | |
| Pseudacysta perseae | avocado lace bug | arthropod | scale, aphid | limited | n/a (already in CA) | |
| Pseudaonidia paeoniae | peony scale | arthropod | scale, aphid | not present | high | |
| Pseudaulacaspis cockerelli | magnolia white scale | arthropod | scale, aphid | limited | n/a (already in CA) | |
| Pseudaulacaspis pentagona | white peach scale | arthropod | scale, aphid | not present | high | |
| Pseudocercospora timorensis | Sweet Potato leaf spot | disease | fungus | |||
| Pseudocheirus peregrinus | Ring-tailed possum | vertebrate | mammal | |||
| Pseudococcus cryptus | citriculus mealybug | arthropod | scale, aphid | not present | high | |
| Pseudococcus dendrobiorum | Orchid mealybug | arthropod | scale, aphid | not present | high | |
| Pseudococcus elisae | banana mealybug | arthropod | scale, aphid | not present | low | View Scorecard |
| Pseudococcus importatus | imported mealybug | arthropod | scale, aphid | not present | moderate | |
| Pseudococcus jackbeardsleyi | Jack Beardsley mealybug | arthropod | scale, aphid | not present | high | View Scorecard |
| Pseudomonas avellanae | Bacterial Canker of Hazelnut | disease | bacterium | |||
| Pseudomonas celebensis | Blood disease bacterium of banana | disease | bacterium | |||
| Pseudomonas celebensis | Freckle | disease | bacterium | |||
| Pseudomonas lignicola | Bacterial Stain | disease | bacterium | |||
| Pseudomonas lignicola | Potato Leaflet Stunt | disease | bacterium | |||
| Pseudoparlatoria parlatoriodes | false paralatoria scale | arthropod | scale, aphid | not present | high | |
| Pseudopezicula tracheiphila | Rotbrenner | disease | fungus | |||
| Psila rosae | carrot rust fly | arthropod | fly | limited | n/a (already in CA) | |
| Psittacula krameri | Ring-necked parakeet | vertebrate | bird | |||
| Pterandrus spp. | fruit flies | arthropod | fly | limited | high | |
| Pterocles exustus | Chestnut-bellied sandgrouse | vertebrate | bird |