FREELIVING AND PLANT PARASITIC NEMATODES FROM SPITZBERGEN, COLLECTED BY MR. H. VAN ROSSEN Author P. A. A. LOOF Department of Hematology, Agricultural University, Wageningen, The Netherlands text Mededelingen Landbouwhogeschool Wageningen 1971 1971-12-31 71 1 86 journal article 10.5281/zenodo.8152982 dc936e39-ea56-4501-b5ba-a24d055276c8 8152982 85C9CB49-EEA1-467B-ACC7-7C11B9EDEEAD Tylenchus costatus de Man, 1921 . Dimensions of 28 females : L = 0.46 -0.75 mm ; a = 26- 36; b = 5.1- 7. 1; c = 5.0- 5.9; V = 1 8 ~ 3763 -68. Spear length = 11-13 pi. Males were not found. The median bulb lies at 46-49 % of neck length from head end. On the whole the Spitzbergen specimens tend to be somewhat larger than those from more southern countries. This species, too, is common on Spitzbergen. Found in samples 16, 20, 21, 28, 36, 38, 52, 56, 61, 63, 65, 66 and 67.