土壌線虫画像データベース;属レベル簡易同定のための形質一覧表 (農業環境技術研究所)
Interactive Diagnostic Key to Plant Parasitic, Freeliving and Predaceous Nematodes (ネブラスカ大学)
Adapted from: An Illustrated Key to Nematodes Found in Fresh Water. (J. Water Pollution Cont. Fed., 49)
Nematological Resources (フロリダ大学)
Electronic Key for Nematode Identification (Darwin Nematode Project) (Plymouth Marine Laboratory)
NeMys: Generic Biological information system (Ghent大学)
Illustrated Key to the Genera of Free-living Marine Nematodes in the Superfamily Chromadoroidea - Exclusive of the Chromadoridae (フロリダ大学)
Illustrated key to the genera of free-living marine nematodes of the Order Enoplida (NOAA Technical Report NMFS, 77)
Genra of freshwater nematodes (Nematoda) of eastern north America (米国 環境保護庁)