Fig. 12. Scanning electron micrographs of additional specimens of Echinoderes guianensis sp. nov. showing trunk ventral overview and details of mouth cone, introvert, neck, lateral terminal spines and sexually dimorphic features. A: Ventral trunk overview; B: mouth cone outer oral styles; C: introvert, sector 1; D: introvert, sector 4; E: detail of primary spinoscalids; F: detail of regular-sized spinoscalids; G: detail of trichoscalid; H: detail of lateral terminal accessory and lateral terminal spines; I: detail of penile spines. Abbreviations: ba, bacteria; bs, basal sheath; ct, cuticular thickening; ep, end-piece; fr, fringe (preceded by corresponding number of fringe); in, introvert; ltas, lateral terminal accessory spine; lts, lateral terminal spine; mc, mouth cone; ne, neck; ps, penile spine; psp, primary spinoscalid; ts, trichoscalid; lambda marks (̂) indicate attachment point of spinoscalids.