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Search the Nematode Collection

USDA Nematode Collection was established in June 1960 By A. Morgan Golden. It was subsequently directed and curated by Dr. Zafar Handoo. Current curators are Dr. Benjamin Waldo and Dr. Paulo Reis Vieira. It is one of the largest and most valuable nematode collections in existence with over 40,000 permanent slides and vials and a total repository of nematode specimens reaching several million. It includes over 1900 type specimens and the valuable and irreplaceable collections of Cobb-Steiner, Thorne, and others. Nematodes from worldwide and domestic sources are represented in the collection. The Collection and associated database provide important information for reference purposes and taxonomic research by U.S. and foreign scientists and a permanent repository for type and other specimens. This website provides a portal to search those specimens that have been cataloged to date and provides data on nematode hosts, occurrence, and distribution.

Displaying 20329 - 20340 of 41945 records

Entry Number: 20331

  • Nematode: Discolaimus similis
  • Host: Covillea tridentata (Larrea & other desert plants) in/on Soil
  • Origin: Sacaton, Arizona, USA
  • Collector: Gerald Thorne
  • Date Collected: 1938 May 03
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Discolaimus 5b (3 female)

Entry Number: 20332

  • Nematode: Discolaimus cylindricum
  • Host: Medicago sativa (Alfalfa) in/on Soil & Crowns
  • Origin: California Mesa, Colorado, USA
  • Collector: Gerald Thorne
  • Date Collected: 1937 Sep 15
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Dorylaimus 26n (8 female)

Entry Number: 20333

  • Nematode: Discolaimus sp.
  • Host: Covillea tridentata (Larrea) in/on Roots/Soil
  • Origin: Littlefield, Arizona, USA
  • Collector: Gerald Thorne
  • Date Collected: 1938 Jul 15
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Placodira 1b (1 male, 1 young)

Entry Number: 20334

  • Nematode: Discomyctus cephalatus
  • Host: Oryza sp. (Rice) in/on Soil
  • Origin: E. C. Sumatra, Bogor Java Experimental Station, Indonesia
  • Collector: Gerald Thorne
  • Date Collected: 1951 Oct 13
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Discomyctus 1 (5 female)

Entry Number: 20335

  • Nematode: Dolichodorus sp.
  • Host: in/on Soil (Stream bed)
  • Origin: Broad Run, Virginia, USA
  • Collector: Gerald Thorne
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Dorylaimus 53b (1 female)

Entry Number: 20336

  • Nematode: Dolichodorus sp.
  • Host: in/on Soil (Stream bed)
  • Origin: Broad Run, Virginia, USA
  • Collector: Gerald Thorne
  • Date Collected: 1932 Jul 20
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Tyleptus 1b (1 female)

Entry Number: 20337

  • Nematode: Dolichodorus sp.
  • Host: in/on Soil (Stream bed)
  • Origin: Broad Run, Virginia, USA
  • Collector: Gerald Thorne
  • Date Collected: 1932 May 01
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Dolichodorus 1 (1 young)

Entry Number: 20338

  • Nematode: Dolichodorus heterocephalus
  • Host: Apium sp. (Celery) in/on Soil
  • Origin: Sanford, Florida, USA
  • Collector: Gerald Thorne
  • Date Collected: 1951 Mar
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Dolichodorus 2 (2 female, 1 male, 1 young)

Entry Number: 20339

  • Nematode: Dolichodorus sp.
  • Host: in/on Water (Canal)
  • Origin: Provo (Provo Bench), Utah, USA
  • Collector: Gerald Thorne
  • Date Collected: 1929 Jul 26
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Dolichodorus 2 (1 female)

Entry Number: 20340

  • Nematode: Dorylaimellus virginianus
  • Host: in/on Soil (Stream bed)
  • Origin: Broad Run, Virginia, USA
  • Collector: Gerald Thorne
  • Date Collected: 1932 Jul 20
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Dorylaimellus 1 (1 female, 1 young)

Entry Number: 20341

  • Nematode: Dorylaimellus virginianus
  • Host: in/on Soil (Stream bed)
  • Origin: Broad Run, Virginia, USA
  • Collector: Gerald Thorne
  • Date Collected: 1932 May 01
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Dorylaimellus 1a (1 female)

Entry Number: 20342

  • Nematode: Dorylaimellus virginianus
  • Host: in/on Soil
  • Origin: Florence, South Carolina, USA
  • Collector: Gerald Thorne
  • Date Collected: 1938 Aug 10
  • Date Received: 1963 Sep 06
  • Disposition of Sample: Specimens to USDANC (Gerald Thorne)
  • Slides: Heterodera 2m (1 male)