Photo Gallery- Washington state
Description (from C.I.H. Descriptions of Plant-parasitic Nematodes)
A parthenogenetic species characterized by great variation in body length and width, tail shape and thickness and early maturity of adults which is sometimes completed during the final ecdysis. Feeding, mature females extracted from roots are often markedly more robust than females obtained from the rhizosphere, which become more linear when relaxed. Head with 2 annules of about equal size, the apical one comprising the lips. As shown by Corbett & Clark (1974) and Sher & Bell (1975), the dorsal and ventral submedian lips are fused, forming a large "head cap," while the lateral lips are delineated and the amphid apertures are at an oblique angle. Spear knobs 4 to 6 um across, typically indented on anterior surfaces. Dorsal lateraly over intestine, the subventral gland nuclei at end of lobes, not in tandem. Excretory pore 75-87 um from the head end. Hemizonid immediately anterior to excretory pore, extencing over 2-3 body annules. Lateral field with 4 incisures, but median zone is often marked by 1 or 2 longitudinal or several oblique striae. Female monodelphic, prodelphic, ovary outstretched with oocytes in tandem and occasionally extending to base of oesophagus. Intra-uterine eggs in older adults may be segmented or contain early 1st stage larva. Post-uterine branch less than or equal to body width, 12-18 um long and is indifferentiated. Tail variable in shape usually conoid with little curvature of ventral surface and usually with 15-20 annules. Tail terminus without annulation, usually rounded, but may be obliquely truncate or slightly digitate. Phasmids in posterior half of tail.
Males seldom found, only 3 specimens known, of no appreciable diagnostic or reproductive significance.
Type habitat and location: P. neglectus neotype collected from roots of rye, former estate of Theessen near Magdeburg, Germany.
Distribution and hosts: P. neglectus is found in temperate regions and has been reported in Europe, Canada, United States, Australia, Japan, South Africa and northwestern India.
Description (from Arjun Lal & Khan, 1989)
The specimens of this population agree in most of the dimensions and characters of Pratylenchus neglectus (Rensch, 1924) Filipjev & Schur. Stet., 1941. They have very faint body annules 1-1.2 um apart at mid-body; four incisures in the lateral field; lip region low, flattened and bears two annules; post-vulval uterine branch shorter than one body width; tail terminus unsteriated and bearing 18 annules.
Habitat and locality: Soil around the roots of Eucalyptus species collected from reserved forest near Chila Forest Rest House, Haridwar, Uttar Pradesh.
Description (from Sher & Allen, 1953)
Female: Lip region bluntly rounded, bears two annules. Outer margins of heavily sclerotized labial framework extend into the body about one body annule. Spear-guiding apparatus extends posteriorly from basal plate about three body annules. Spear 16 um long, with well-developed, broadly rounded basal knobs. Hemizonid just anterior to excretory pore, about two body annules long. Ovary does not extend to esophagus, consists of single row of oocytes except for multiple row at anterior end. Oviduct cellular, uterus short. Spermateca or spermatozoa not seen. Posterior uterine branch short, about width of the body at vulva. Tail bluntly rounded, no striations around terminus.
Male: Similar to female. Single outstretched testis. Phasmids slightly posterior to middle of tail, do not appear to extend into delicate bursa.
Pratylenchus minyus is similar to P. scribneri but can be distinguished from this species by the more posterior position of the vulva.
Type host: From soil in pear orchard.
Type locality: George Miller ranch, Alhambra Valley, Contra Costa County, California.
DNA Sequences Obtained
|NY-2-33||in culture, University of Wisconsin|