Fig. 4
From: Morphology, performance and attachment function in Corynosoma spp. (Acanthocephala)
Neck retractor muscles in Corynosoma spp. a Dorsal view of female C. cetaceum. b Lateral view of female C. cetaceum cut through mid-sagittal plane. Note that the receptacle is cut in both pictures to better view muscle arrangement. c Detail of distal insertion of neck retractors in female C. wegeneri. d Detail of distal insertion of neck retractors in female C. hamanni. Scale-bars: 0.5 mm. Abbreviations: D1, D4, disks muscles 1, 4; DNR(s), dorsal neck retractor(s); Le, lemniscus; R, receptacle; VNR, ventral neck retractor