Clarissa Balbalian (Chair, National Data Committee)
The Communicator: Volume 6, Issue 10, October 2025
The following lists document additions, modifications and deletions to the National Data Repository (NDR) Host and Pest dictionaries that were implemented in July. You can view updates to the NPDN host and pest dictionaries any time by logging into NDR clicking on the Dictionaries tab and selecting Updates from the dropdown menu.
A guideline to understanding data dictionaries in the NDR is available to NPDN members online. NPDN members also have access to an online guideline on how to request new host/pest codes or changes to existing codes. Members must be logged in to access the NDR and the guidelines.
Entries below are listed alphabetically by common name followed by the scientific name appearing in parentheses.
Host Dictionary Updates
New host additions
Autum onion (Allium stellatum)
Yellwwood (Cladrastis sp.)
Jing jie; Japanese catnip (Nepeta tenuifolia)
Quinoa (Chenopodium quinoa)
Fairy Bells (Disporum sessile)
Bai zhu (Atractylodes macrocephala)
Virginia strawberry (Fragaria virginiana)
Modified hosts
None
Deleted hosts*
None
Pest dictionary updates
New pest codes
Bark beetle (Pityophthorus arcanus)
Pholiota mushroom (Strophariaceae sp./spp.)
Polypore Mushroom (Order Polyporales sp./spp.)
Root and butt rot (Climacocystis borealis)
Crown rot; Root rot; Stem rot (Phytophthora tentaculate)
Canker (Family Botryosphaeriaceae)
Linospora leaf blight; leaf spot (Linospora sp./spp.)
Late season decline (Pantoea ananatis)
Crust fungus (Trechispora sp./spp.)
Leptosphaeria blight (Leptosphaeria woroninii)
Canker, dieback (Sporocadus sp./spp.)
Grapevine trunk disease (Various fungi)
Wood rot fungus (Inonotus quercustris)
Leaf spot (Phoma microsporella)
Wood decay fungus (Armillaria gallica)
Wood rot fungus (Trichaptum sp./spp.)
Bark-inhabiting fungus (Neolamproconium sp./spp)
Ceramic fungus (Xylobolus frustulatus)
Unspecified pathology (Didymella sp./spp)
Unspecified pathology (Clonostachys sp./spp.)
Leaf spot (Boeremia sp./spp.)
Gold fleck (Abiotic disorder)
Wart disease, False rust (Synchytrium geranii)
White rot; wood rot (Phlebiopsis sp./spp.)
Leaf smut (Entyloma fuscum)
Eutypella canker (Eutypella quaternate)
Bud rot (Cryptosporiopsis tarraconensis)
Leaf spot; Blotch (Didymosphaeria sp./spp.)
Wood rot fungus (Perenniporia fraxinea)
Aphelinid wasp (Aphelinid sp./spp.)
Flower weevil (Madarellus undulatus)
Broad-nosed weevil (Subfamily Entiminae)
Thrips (Neohydatothrips sp./spp)
Spider wasp (Psorthaspis sanguinea)
Canker; Dieback (Family Cryphonectriaceae)
Mast seed crop (Abiotic disorder)
Rapid Growth Syndrome (Abiotic disorder)
Unspecified pathology (Cylindrocladiella sp./spp.)
Modified pest codes
Bark beetle (Pityophthorus arcanus)
Ridged Carrion Beetle (Oiceoptoma inaequale)
Tiger Bee fly (Xenox (Anthrax) tigrinus)
Centipedes (Class Chilopoda)
Phytophthora alni species complex (Phytophthora alni)
Bacterial canker (Unidentified bacteria)
Red crown rot (Calonectria ilicicola)
Laurel wilt (Harringtonia lauricola)
Cork oak decline (Raffaelea quercina)
Japanese oak wilt (Dryadomyces quercivora)
Lesser grape root borer (Vitacea scepsiformis)
Longhorned beetle (Xylotrechus adspersus)
No insect or other arthropod found ( No Detection)
No virus found ( No Detection)
No bacteria found ( No Detection)
No nematode/nematode problem found ( No Detection)
Anthracnose (Elsinoe necator)
Bark lice; Book lice; Parasitic lice (Order Psocodea)
Sawflies (Superfamily Tenthredinoidea)
Superfamily Tenthredinoidea
Canker; Dieback (Family Cryphonectriaceae)
Mast seed crop (Abiotic disorder)
Deleted pest codes*
None
*The NPDN does not delete any data. Deletion means that as of the date of the change, that host or pest code is no longer viable and the choice has been eliminated from the NDR host and/or pest dictionary.
