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USDA Nematode Collection Database

posted on 2023-11-30, 07:37 authored by U.S. Department of Agriculture, Agricultural Research Service

The USDA Nematode Collection is one of the largest and most valuable nematode collections in existence. It contains over 49,000 permanent slides and vials, with a total repository of nematode specimens reaching several million, including Cobb-Steiner, Thorne, and other valuable collections. Nematodes contained in this collection originate from world-wide sources.

The USDA Nematode Collection Database contains over 38,000 species entries. A broad range of data is stored for each specimen, including species, host, origin, collector, date collected and date received. All records are searchable and available to the public through the online database.

The physical collection is housed at the USDA Nematology Laboratory in Beltsville, MD. Specimens are available for loan to scientists who cannot personally visit the collection. Please see the Policy for Loaning USDANC Specimens for more information on this process.

Scientists and other workers are always welcomed and encouraged to deposit material into the collection.

Resources in this dataset:


Data contact name

Handoo, Zafar A.

Data contact email


U.S. Department of Agriculture, Agricultural Research Service

Intended use

* For taxonomic research and reference purposes by U.S. and foreign scientists * As permanent repository for type and other specimens * Provides data on nematodes hosts, occurrence and distribution

Temporal Extent Start Date



  • Not specified

Geographic location - description


ISO Topic Category

  • biota

National Agricultural Library Thesaurus terms

databases; USDA; Nematoda; nematology; parasites; Biological Sciences

OMB Bureau Code

  • 005:18 - Agricultural Research Service

OMB Program Code

  • 005:040 - National Research

Pending citation

  • No

Public Access Level

  • Public

Preferred dataset citation

U.S. Department of Agriculture, Agricultural Research Service (2016). USDA Nematode Collection Database. U.S. Department of Agriculture, Agricultural Research Service.

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