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Abstract
A description is provided of Longidorus dalmassoi sp. n., a bisexual species associated with grasses in France. The species is characterised by a body length of 6.9-7.8 mm, slightly expanded and anteriorly flattened head region, symmetrically bilobed amphidial pouches, long odontostyle (152-163 mu m), spear guiding system with compensation sacks, conoid tail (39-52.5 mu m) with narrow, rounded terminus, males with short spicules (50-51 mu m) and a row of 15 or 16 supplements. Longidorus dalmassoi sp. n. (Nematoda: Longidoridae) provenant de France - Description est donnee de Longidorus dalmassoi sp. n., espece bisexuee associee a une vegetation herbacee, en France. Cette espece est caracterisee par une longueur du corps de 6,9-7,8 mm, une extremite anterieure legerement elargie et aplatie a l'avant, des poches amphidiennes symetriques et bilobees, un odontostyle long (152-163 mu m), un systeme de guidage du stylet comportant des sacs de compensation, une queue conoide (39-52,5 mu m) a extremite etroite et arrondie, des males a spicules courts (20-51 mu m) et pourvus d'une rangee de 15 ou 16 supplements.
Karyotypes from 72-hour whole blood cultures were compared for six species of macaques (Macaca arctoides, M. fascicularis, M. mulatta, M. nemestrina, M. nigra, and M. radiata) and one species of mangabey (Cercocebus atys). G-bands, sequential C-bands, and late replication patterns were studied. Results showed a variation in a single chromosome pair which differentiated C. atys from the macaques. Heteromorphic variation in silver stained nucleolar organizing regions was seen between and within individuals. This data supports previous work showing the highly conserved nature of the chromosomes of the subfamily Cercopithecus.