Figure 4

Overviews and details of head and trunk morphology. Scanning electron micrographs showing overviews and details of head and trunk morphology of Zelinkaderes yong sp. nov. paratypes (KIN-000825). A. Dorsal overview of female specimen. The midterminal (mt) spine is not shown entirely. B. Detail of the cuticle with the midlateral sensory spot on segment 6, showing the general structure of the cuticle as patterned by longitudinal furrows from where cuticular hairs emerge. C. Detail of the mouth cone showing the elongated proximal part of the mouth cone. D. Detail of the mouth cone in frontal view. E. Detail showing the spines at the bases of the primary spinoscalids that point in an anterior direction when the introvert is partly everted. F. The spines on the primary scalids as seen when the introvert is fully everted. G. Scalid spines pointing anteriorly as seen when the introvert is partly retracted. Abbreviations: acml acicular midlateral spine, fr.sc fringe replacing spinoscalid followed by ring number, in introvert, ltas lateral terminal accessory spine, mc mouth cone, md4-11 acicular middorsal spines on segments 4 to 11, mts midterminal spine, ne neck region, oos outer oral styles, psc primary spinoscalids, psc.sp primary spinoscalid spines, sc spinoscalid followed by ring number, tr trichoscalid.