Synagoga arabesque sp. nov., female. Morphology of antennules (SEM) A right antennule, lateral view, inner surface, segments numbered B Ctenoid scales of second segment C omniserrate setae on postaxial/ventral surface of second segment D Claw sheathed by claw guard, inner side of sixth segment E Junction between claw and claw guard showing their microsculpture, inner side F Spines of fourth segment forming ‘fork’ to accept claw of sixth segment G proximal sensory process of sixth segment H claw sheathed by claw guard, outer side of sixth segment I 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.