Abstract
Colled globose female nematodes and larvae, identified as Phlyctainophora lamnae Steiner, 1921, were found in tumour-like lesions on the tail fin of spiny dogfish Squalus acanthias L. (Squalidae) caught off southern New Zealand. Nematodes provoke a chronic inflammatory response by the host. No male nematedes were recovered. This is the first record of the genus from New Zealand and the first record of adult Phlyctainophora from the Southern Hemisphere. Phlyctainophora squali Mudrey & Dailey, 1969 is considered a synonym of P. lamnae.