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Cactodera weissi (Steiner, 1949) Krall & Krall, 1978
Cyst of Cactodera weissi
Body globose, with short neck and terminal cone.
Cuticle thick, with superficial irregular transverse ridges
interrupted by short markings, more or less longitudinal; D-layer
present (absent in C. betulae).
Vulva terminal surrounded by a circumfenestration; vulval slit less
than 20 µm long; no underbridge; no
bullae; anus without
All eggs retained in body (no egg-mass). Eggs without
punctations or tubercles.
Stylet less than 30 µm long.
field with four lines.
greater than 30 µm long, slightly curved, pointed at distal extremity,
No cloacal tubus.
Tail short, hemispherical.
Second-stage juveniles: Stylet less than 30 µm long.
Lateral field with four lines.
glands filling body cavity.
Tail conical, pointed with hyaline terminal half.
Luc, Maggenti & Fortuner (1988).
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
Reported fromk several areas, for example, on weed species in Michigan, USA.
Nurse cell system: A syncytium.
Knotweed (Polygonum pennsylvanicum and P. persicaria)
Host Plant Resistance, Non-hosts and Crop Rotation alternatives:
Baldwin, J.G., Mundo-Ocampo, M., McClure, M. 1997. Cactodera salina n.sp. From
the estuary plant, Salicornia bigelovii, in Sonora, Mexico. J. Nematology
Evans, K., Rowe, J.A. 1998. Distribution and economic importance. In S.B. Sharma
(ed). The Cyst Nematodes. Kluwer
Luc, Maggenti & Fortuner, Rev. Nematol. 11(2):159-176 (1988).