Digiani María Celina, Durette-Desset Marie-Claude
Laboratoire de Biologie parasitaire, Protistologie et Helminthologie, CNRS FR 63, Muséum National d'Histoire Naturelle, 61 rue de Buffon, 75231 Paris cedex 05, France.
Syst Parasitol. 2003 May;55(1):33-8. doi: 10.1023/a:1023993426975.
A new nippostrongyline, Suttonema delta n. g., n. sp., is described from the intestine of Oxymycterus rufus (Rodentia: Sigmodontinae) from Argentina, in a host from which trichostrongylid nematodes were hitherto unknown. The new genus is very similar to Stilestrongylus Freitas, Lent & Almeida, 1937 and Malvinema Digiani, Sutton & Durette-Desset, 2003, both parasites of Neotropical sigmodontines, in the features of the caudal bursa (with a pattern of type 1-4, asymmetrical with hypertophied right lobe) and the presence of cephalic structures resembling cuticular cordons. The larval synlophe is also identical to that of Stilestrongylus freitasi Durette-Desset, 1968. The new genus is differentiated by an adult synlophe with few ridges (9-12 at mid-body) of two different types: small, rounded ridges without cuticular support on the dorsal side, and pointed ridges of unequal size on the ventral side and in lateral fields. It is also characterised by the presence of comaretes on the left ventral and ventral fields of the synlophe.
一种新的类圆线虫，萨顿线虫属（Suttonema），新种（delta n. sp.），从阿根廷棕刺鼠（Oxymycterus rufus，啮齿目：稻鼠亚科）的肠道中被描述出来，此前在该宿主中未知有毛圆科线虫。这个新属与1937年的斯氏线虫属（Stilestrongylus Freitas、Lent & Almeida）和2003年的马尔维纳斯线虫属（Malvinema Digiani、Sutton & Durette-Desset）非常相似，后两者均为新热带区稻鼠亚科动物的寄生虫，在尾翼（呈1 - 4型，不对称，右叶肥大）以及存在类似角质带的头部结构特征方面相似。幼虫的体表环纹也与1968年杜雷特 - 德塞的弗里塔斯斯氏线虫（Stilestrongylus freitasi Durette-Desset）相同。新属的区别在于成虫体表环纹有较少的嵴（身体中部有9 - 12条），有两种不同类型：背侧小而圆的嵴，无角质支持，腹侧和侧区有大小不等的尖嵴。其特征还在于体表环纹的左腹侧和腹侧区有副嵴。
