Synagoga arabesque sp. nov., female. General morphology A, B, D–F holotype C paratype Mg 1244 A general view lateral, left side B General view lateral, right valve of carapace removed, segments of thorax (t1-6) and abdomen (1-5), entrance of gut diverticulum and adductor muscle indicated by asterisk C General view lateral, right side D Anterior carapace pit, ventral end below E Rudimentary penis F furcal ramus, inner side. Abbreviations: a1 – antennules, ab – abdomen, acp – anterior carapace pit, em – embryos, fr – furcal rami, gd – gut diverticulum, oc – oral cone (pyramid), ov – ovary, t1-6 – segments of thorax, te(5) – fifth abdominal segment(telson), thp1-6 – thoracopods I–VI, ts – telson spines. Scale bars: in μm.