Revision of the genera of Heligmonellidae (Nematoda, Heligmosomoidea), parasitic in Muridae from New Guinea Author Durette-Desset, Marie-Claude Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum National d’Histoire Naturelle, CNRS, Sorbonne Université, Author Digiani, María Celina CONICET-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina & División Zoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, text Parasite 2023 Paris, France 2023-12-20 30 63 1 34 http://dx.doi.org/10.1051/parasite/2023058 journal article 10.1051/parasite/2023058 1776-1042 PMC10732140 38117273 12628842 DC25665A-E218-496B-974E-B813F69395E5 3.9.1.1 Flannerystrongylus abulus ( Figs. 9A–9C ) 3.9.1.1.1 Synlophe (based on sections from ten specimens; sex not specified). Sections analyzed herein are within proximal body: female ( Fig. 2 /9A) and at midbody: male ( Fig. 6 /9B) and female ( Fig. 5 /9C); lateral cords illustrated in Figures 2 /9A (left cord) and 2/9 C; ridges numbered in Figure 2 /9A. In all sections, careen absent. Axis of orientation subfrontal within proximal body, not specified at midbody [ 42 ]. Within proximal body: in Figure 9A (female), 15 ridges regularly spaced and subequal in size; on dorsal side, ridges 1-4 and 6 oriented from right to left, ridges 5 and 7, perpendicular to body; on ventral side, all ridges oriented from right to left except ridge 8’ perpendicular to body; axis of orientation not passing through left lateral cord (right one not illustrated) but above and starting between ridges 7 and 8’ whose tips are not divergent, then passing between ridges 1 and 1’ whose tips are not convergent but divergent. At midbody: in Figures 9B (male) and 9C (female), 15 ridges regularly spaced and subequal in size, oriented disparately. 3.9.1.1.2 Bursa (number of worms studied not provided, illustrated in [ 42 ]: Figs. 12, 14 and 15). Figure 12: left lateral view of one lobe (not specified), ventral rays situated towards bottom of page, only distal part of rays 2-8 illustrated, ray 8 joined proximally to ray 6. Figure 14: dorsal lobe, view not specified, only distal extremity of dorsal ray and rays 8 illustrated, both strongly curved, one of them extending beyond extremity of dorsal ray. From the written description: rays 8 diverge at level of division of dorsal ray, i.e. , at one-third of length; left ray 8 larger. Figure 15: right lateral view of one lobe (not specified), ventral rays situated towards bottom of page; one branch of dorsal ray and distal part of rays 2-8 illustrated; ray 8 slightly curved and reaching level of extremity of dorsal ray; ray 6 straight, rays 4-5 apparently curved dorsally. From the written description [ 42 ]: bursa dissymmetrical with left lobe larger; lateral rays 6 curved dorsally, rays 4, 5 ventrally; rays 4 largest; rays 2-3 diverge ventrally, reaching margin of bursa; pattern of type 2-3.