Plectus assimilis Bütschli, 1873

P. A. A. LOOF, 1971, FREELIVING AND PLANT PARASITIC NEMATODES FROM SPITZBERGEN, COLLECTED BY MR. H. VAN ROSSEN, Mededelingen Landbouwhogeschool Wageningen 71, pp. 1-86 : 47

Plectus assimilis Bütschli, 1873

( Fig. 14 ).

Dimensions of five females: L = 0.61 -0.73 mm; a = 14-15; b = 4.0-4.7; c = 10-12; V = 8 - 1246 - 51 8 - 1 3.

This rather aberrant species can be recognized easily by its very plump body, tapering hardly towards the head end, strongly so towards tail end. Amphids 2.5 [i. wide or 15 % of corresponding body width; located only 0.4 head widths from anterior end. Depth of stoma 22-25 jx. Corpus and isthmus of oesophagus very broad. Cephalic setae 4;x long, directed anteriad. Vulva transverse, vagina only about one-quarter of body width deep. Tail length 3.6 -4.0 anal body widths; tail almost straight.

Samples 3, 4, 64 and 67. Juveniles in 27, 39 and 65.

Figures

FIG. 14. Plectus assimilis Bütschli, female. A: neck region; B: tail; C: entire specimen.