Synagoga arabesque sp. nov., male. Morphology of antennules (SEM) A spines of fourth segment forming ‘fork’ to accept claw of sixth segment (antennular segments numbered, marginal fold of mantle indicated by arrowheads) B sixth segment, left antennules, outer surface C proximal sensory process of sixth segment D junction between claw and claw guard showing their microsculpture, terminal ctenoid fold of claw guard sheathed claw indicated by asterisk, outer side. Abbreviations: ae – aesthetasc, cg – claw guard; cl – claw; ps – proximal sensory process. Scale bars: in μm.