Fig. 6 in Hardly Venus's servant-morphological adaptations of Veneriserva to an endoparasitic lifestyle and its phylogenetic position within Dorvilleidae (Annelida)

Fig. 6 Epidermal ultrastructure of Veneriserva pygoclava. A–D TEM images of the epidermis revealing the presence of dense, modified microvilli (mv) that cover the body surface. A mucosecretory gland cell (gl) is discernable in A. D shows details of a multi-ciliated epidermal cell. B depicts the microvilli (mv) covering the cuticle (cu). Note the inflated tips of the microvilli and the electron-dense droplets. E Apically the epidermal cells display an abundance of transport vesicles (v). Arrowheads mark the branching microvilli piercing through the cuticle in all images. Abbreviations—ci cilia, m mitochondria, nc nucleus