Fig. 3 a–g in Description of Spadella valsalinae sp. nov., a neo-endemic benthic chaetognath from Northern Adriatic Sea (Croatia) with remarks on its morphology, phylogeny and biogeography

Fig. 3 a–g. Habitus of Spadella valsalinae sp. nov. Scanning electron (a–f) and light (g) micrographs. a Frontoventral view of the head. b Detail of a hook (grasping spine). Note the tip at the edge. c, d Detailed view of the ventral side of the head around the mouth region showing the elongated teeth. e Ventral view of the tail. Arrow marks the ventral adhesive papillae more aggregated in the transition zone from trunk to tail. f, g Higher magnification and detail of the seminal vesicle. Arrows point to ciliary fence receptor organs, whereas arrowheads mark some adhesive papillae. at anterior teeth, ho hood (praeputium), oep expelled oesophageal glandular epitheli- um, pt posterior teeth, vo vestibular organ, vp vestibular pit