Longidorus 22 Helicotylenchus 2 3 Dolichodorus Belonolaimus G纸 21 Rotylenchulus 4 Anquina Criconema 20 5 Xiphinemo Tylenchulus 9 6 Hoplolaimus 7 Rotylenchus 8 Hemicycliophora 9 Ditylenchus Meloidogyne Aphelenchoides Tylenchorhynchus 。sa→Trichodorus 3 Radopholus Pratylenchus Heterodera 5 Criconemoides Paratylenchus 0250um5004m750um1000m1250m1500m1750um2000um2250um2500um2750um300μm Morphology and relative sizes of some of the most important plant parasitic nematodes