Fig. 1From: Molecular analysis of polymorphic species of the genus Marshallagia (Nematoda: Ostertagiinae)Marshallagia spp. n. f. major and minor males showing ventral view of primary structural characters. The spicules and the gubernaculum are indicated by arrows and dotted arrows, respectively). Scale-bars are given in micrometers. a M. marshalli; b M. schumakovitschi; c M. uzbekistanica; d M. occidentalis; e M. trifida; f M. sogdianaBack to article page