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Ex-situ microphotographs of Heteromysis cancelli sp. n. from False Bay, Simonstown, Cape Peninsula, South Africa; adult males with 6–7 mm body length in lateral (A) or in dorsal view (B), respectively. Aquarium photos by C.L. Griffiths.
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Heteromysis cancelli sp. n., paratype male with 6.9 mm body length (A, E–H), paratype female 6.4 mm (B–D, J). A, B cephalic region plus carapace in male (A) versus female (B), dorsal view, details show pore groups (C, D) on carapace E male antennula, dorsal F labrum, obliquely ventral G mandibles with right palpus, caudal H labium, ventral J maxillula, caudal.
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Heteromysis cancelli sp. n., paratype female with 6.4 mm body length (A, C, D, H, J, L, M) with one of its larvae (N), paratype male 6.9 mm (B, E–G, K). A maxilla, caudal B first thoracopod, caudal aspect, with thoracic sternites 1-8, ventral C second maxilliped, ventral, detail (D) shows modified seta E–M series of dactylus in thoracic endopods 1-8 with claw (if present), caudal N nauplioid larva at late substage 2, lateral.
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Heteromysis cancelli sp. n., paratype male with 6.9 mm body length (A, F–J), paratypes female 6.1 mm (B, C) and 6.4 mm (D, E). A male third thoracopod, caudal aspect B tarsus of female thoracic endopod 3, rostral, detail (C) shows modified seta D fourth thoracopod, rostral, detail (E) shows modified seta F tarsus of sixth thoracic endopod, rostral G–J series of male pleopods 1, 4, 5, rostral.
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Heteromysis cancelli sp. n., paratype male with 6.9 mm body length (A, C–E), paratype female 6.4 mm (B, F) A eighth thoracopod with penis, caudal aspect B tarsus of female eighth thoracic endopod, caudal C uropods, dorsal D telson, dorsal E, F terminal margin of sixth pleonite, lateral, in male (E) versus female (F).
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Microphotographs of adult female of Heteromysis fosteri sp. n. with 7 mm body length (A) and of adult male of Heteromysis octopodis sp. n. with 9 mm (B), each from Miller’s Point, Cape Peninsula, South Africa. A laboratory photo by C.L. Griffiths B in situ image by Craig Foster, this last with background cleaned with electronic tools.
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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.
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Heteromysis fosteri sp. n., paratype male (A, F–H) with 6.0 mm body length and paratype female 8.0 mm (B–E). A male tarsus with part of merus pertaining to third thoracic endopod, caudal aspect B the same for female, detail (C) shows subbasally toothed seta D tarsus of fourth thoracic endopod, caudal, detail (E) shows subbasally toothed seta F eighth thoracopod with penis, caudal G third male pleopod, rostral H telson, dorsal.
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A subadult female of Heteromysis octopodis sp. n. with 11 mm body length from tide pool B multi-species association inside den in 3 m depth, occupied by Octopus vulgaris, to the right with the crab Guinusia chabrus; upper arrow points to a mysid school of what we assume to be H. octopodis sp. n., lower arrow to a different but undetermined mysid species. A, B from Miller’s Point, Cape Peninsula, South Africa; in situ images by Craig Foster B image is taken of the same octopus den from which the samples were collected, but on a different date.
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Heteromysis octopodis sp. n., paratype adult male with 8.8 mm body length (A, D–K), paratype subadult females with 9.0 mm (B, L) and 8.8 mm (C). A cephalic region plus anterior part of carapace in male, dorsal view B anterior margin of antennular trunk in subadult female, dorsal C epipod of first thoracopod, caudal D–H series of dactylus with claw in thoracic endopods 1, 3-5, 8, caudal J fourth male pleopod, rostral K, L terminal margin of sixth pleonite, lateral, in male (K) versus subadult female (L).
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Heteromysis octopodis sp. n., paratype adult male with 8.8 mm body length. A tarsus with part of merus pertaining to third thoracic endopod, caudal aspect, details show subbasally toothed seta on merus (B) versus subbasally barbed seta on carpus (C) D tarsus with part of merus pertaining to fourth thoracic endopod, caudal, detail (E) shows subbasally toothed seta F eighth thoracopod with penis, caudal G telson, dorsal.