Heteromysis fosteri sp. n., paratype females with 7.0 mm (A) and 8.0 mm (C–H, L) body length, paratype male 6.0 mm (B, J, K). A cephalic region plus anterior part of carapace in female, dorsal view B male antennula, dorsal C epipod of first thoracopod, caudal D–H series of dactylus with claw in thoracic endopods 1, 3-5, 8 of female, caudal J tip of claw of third thoracic endopod in male K, L terminal margin of sixth pleonite, lateral, in male (K) versus female (L) M nauplioid larva at substage 3, lateral.