Nematodes - Westcott's Plant Disease - page 49

Nematodes

In the more than five decades since the first
edition of this topic was prepared, nematodes
have become of major importance in plant
pathology. Several hundred species are known
to cause plant disease. All plant parasitic nema-
todes are in the animal kingdom and belong to the
phylum Nematoda. Some examples are given
after each genus.
P HYLUM : Nematode
O RDER : Tylenchida
S UBORDER : Tylenchina
S UPERFAMILY : Tylenchoidea
F AMILY : Anguinidae
G ENUS : Anguina , seed gall nematode.
Ditylenchus , stem or bulb nematode of onion,
narcissus.
F AMILY : Pratylenchidae
G ENUS : Pratylenchus , lesion nematode of nearly
all plants.
Radopholus , burrowing nematode of citrus.
Naccobus , false root-knot nematode of garden
beets, cacti, crucifers, lettuce.
F AMILY : Hoplolaimidae
G ENUS : Hoplolaimus , lance nematode of corn,
turf grass, carnation.
Rotylenchus ,

F AMILY : Belonolaimidae
G ENUS : Belonolaimus , sting nematode on wide
variety of plants.
Tylenchorhynchus , stunt nematode tobacco, corn

F AMILY : Heteroderidae
G ENUS : Globodera , cyst nematode of potato.
Heterodera , cyst nematode on wide variety of
plants.
Meloidogyne , root-knot nematode on wide
variety of plants.

F AMILY : Tylenchidae
G ENUS : Tylenchus
S UPERFAMILY : Criconematoidea
F AMILY : Criconematidea
G ENUS : Criconemella , ring nematode of citrus,
fig, zoysia.
Hemicycliophora , sheath nematode of beet, bean,
blueberry, dracaena.

F AMILY : Tylenchulidae
G ENUS : Tylenchulus , citrus nematode of citrus,
grapes, lilac.
Paratylenchus , pin nematode of

spiral nematode of turf grass,

tomato, gardenia.
Helicotylenchus , spiral nematode of turf grass,
gardenia, azalea, apple, grape.
Rotylenchulus , reniform nematode of turf grass,
tomato, gardenia.
F AMILY : Dolichodoridae
G ENUS : Dolichodorns , and nematode of turfgrass.

carnation,

celery, fig.

O RDER : Aphelenchida
S UBORDER : Aphelenchina