Thoracopods 3–8 in Ischiomysis proincisa sp. nov.; paratypes adult ♂ (BL 4.5 mm, A, B, G–O) and adult ♀ (BL 4.3 mm, C–F, P–R); A. Male thoracic endopod 3, rostral; details (B) show the flagellate spines of the carpus; C. Tarsus and distal portion of the merus in female thoracic endopod 3, rostral; details show the flagellate spines of the carpus (D) and the disto-mesial carina of the merus (E); F–K. Series of dactyli 3–8 with claw, setae omitted; L. Male thoracic endopod 8, caudal; details show the flagellate spines (M, N) of the ischium and the modified praeischium (O) with large tooth-like projection; P. Female thoracopod 8 with outer face of oostegite 3, lateral; details show a normal smooth seta (Q) of the ischium and a subapically flagellate whip seta (R) from the outer face of the oostegite.