Tetylenchus joctus Thorne 1949

Tetylenchus joctus Thorne, 1949 (Fig. 9). Females (n = 11): L = 0.52-0.62 mm; a = 28 - 37; b = 5. 1- 6. 1; c = 8.5-10.2; V = 2 3 - 3 5 5 0 _ 5524 - 29 One male: L = 0.50 mm; a = 33; b = 5.0; c = 7.7; T = 47; spicule = 22 JA. The identity of these specimens is not wholly sure, chiefly because the spe...

Full description

Bibliographic Details
Main Author: P. A. A. LOOF
Format: Other/Unknown Material
Language:unknown
Published: 1971
Subjects:
Biodiversity
Taxonomy
Animalia
Nematoda
Chromadorea
Rhabditida
Tylenchidae
Tetylenchus
Tetylenchus joctus
Ferris
Thorne
Spitzbergen
Online Access:https://zenodo.org/record/8152842
https://doi.org/10.5281/zenodo.8152842
Description
Summary:Tetylenchus joctus Thorne, 1949 (Fig. 9). Females (n = 11): L = 0.52-0.62 mm; a = 28 - 37; b = 5. 1- 6. 1; c = 8.5-10.2; V = 2 3 - 3 5 5 0 _ 5524 - 29 One male: L = 0.50 mm; a = 33; b = 5.0; c = 7.7; T = 47; spicule = 22 JA. The identity of these specimens is not wholly sure, chiefly because the spear, although very indistinct, appears to be only 9 -10 \ L long or 1.6 X width of lip region. Cuticular annulation fine but conspicuous. Lip region continuous, very low. Valves of median bulb located at 44-47 % of neck length from head end. Tail length 4.3 -5.2 anal body widths. In some specimens the distal part of the tail is curved slightly ventrad. Occasionally the striation continues till the terminus which may appear slightly mucronate; this is in accordance with the description of Ferris & Ferris (1967). Ovaries consisting of single row of oocytes except in the multiplication zone; certainly there is no rhachis. Numerous in sample 21; found also in sample 34. In sample 21 also one female was found, conspicuously larger than the others, with much higher lip region offset by slight constriction. Tail curved to ventral side. Dimensions: L = 0.78 mm; a = 36; b = 5.9; c = 10.1; V = 355234; spear length = 12 ji (Fig. 9, D- E). Published as part of P. A. A. LOOF, 1971, FREELIVING AND PLANT PARASITIC NEMATODES FROM SPITZBERGEN, COLLECTED BY MR. H. VAN ROSSEN, pp. 1-86 in Mededelingen Landbouwhogeschool Wageningen 71 on pages 37-39, DOI:10.5281/zenodo.8152982

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