Biology Reference
In-Depth Information
Bursaphelenchus lignicolus Causes wilt of
pine and the nematode is vectored by cerambycid
beetle (pine sawyer beetle).
Bursaphelenchus xylophilus
Pinewood Nem-
atode
on pine.
Criconemoides (Genus dubium)
Criconematidae. Ring nematodes; short, thick-
bodied; cuticle thick with retrose (inclining back-
ward) annules; ectoparasites with a wide host range
Criconemoides annulatum On holly oak, Mon-
tana; beans and citrus, Louisiana.
Criconemoides citri
Citrus Ring Nematode
on
citrus in Florida. The broadly annulated head is
often buried deep in root tissue, which dies near
the feeding puncture.
Criconemoides crotaloides On Douglas-fir and
poplar, Utah.
Criconemoides curvatum Reported in large
numbers on carnations but apparently not very
injurious; also on grasses, Ohio.
Criconemoides
Cacopaurus
Tylenchulidae. Cuticle finely annulate; female
small but very obese; eggs large; male lacks
stylet.
Cacopaurus pestis Reported from roots of Per-
sian (English) walnut in California, causing typ-
ical decline with reduction in size and number of
leaves, fewer nuts, eventually complete defolia-
tion and death.
cylindricum On
peanut,
in
Georgia.
Criconemoides komabaensis On camellia, in
Florida.
Criconemoides lobatum On pines, Florida;
potato, New York; also grasses.
Criconemoides mutabile On marigold, D. C.
Criconemoides ornatum On grasses, Ohio.
Criconemoides parvum On grasses, Ohio.
Criconemoides rusticum On grasses, Ohio.
Criconemoides similis
Cobb's Ring Nema-
tode
. Apparently an important factor in decline
of peaches in Maryland and North Carolina,
reported on pine in Florida and North Carolina.
Criconemoides teres On oak, California.
Criconemoides xenoplax On carnation, caus-
ing reduced root system, stunting, reduced flower
yield; also reported on grape, peach and grasses.
Criconema
Criconematidae. Ring nematodes, short, thick,
sedentary ectoparasites; cuticle thick with spines
or scales; usually found in woodlands, in damp
areas, seldom in cultivated soil.
Criconema civellae Reported on citrus roots in
a Maryland greenhouse.
Criconema decalineatum
Fig Spine Nema-
tode
on figs.
Criconema spinalineatum
Zoysia Spine Nem-
atode
on Zoysia.
Mesocriconema
Criconella
Mesocriconema
xenoplax
).
Ring Nematode
on peach cover
crops including curly dock, perennial ryegrass,
vetch, crimson clover, hairy vetch, and cowpea;
also tall fescue, and white clover.
Mesocriconema xenoplax (formerly
Criconella xenoplax
).
Ring Nematode
on
peach cover crops including curly dock,
perennial ryegrass, vetch, crimson clover, hairy
vetch, and cowpea; also tall fescue, and white
clover.
xenoplax (see
▶
Crossonema
Crossonema sp.
Decline
of Alaska cedar.
Ditylenchus
Anguinidae. Bulb and stem nematodes, slender,
of moderate length, conelike tail, finely striated
cuticle, mostly endoparasites.
