Boreomysinae, Holt et Tattersall, 1905

Daneliya, Mikhail E., 2023, Mysid Subfamily Boreomysinae (Crustacea: Mysida: Mysidae) in the Southeast Australian Deep-sea, Records of the Australian Museum (Rec. Aust. Mus.) 75 (2), pp. 87-124 : 91

Key to the genera of the subfamily Boreomysinae

1 Telson not broad in central part, narrower than in anterior part ( Figs 1C ; 4H,F ; 5C ). Eyes with cornea (cornea occasionally reduced, but always present), not concave ( Figs 1A,B,G ; 4A–D ; 5A,B ) ................................................................................. Boreomysis G. O. Sars, 1869

—— Telson broad in central part, as wide as or wider than in anterior part ( Fig. 13B,E ). Eyes without cornea, laterally concave (Figs 12A, 13A) ................................................ Neobirsteiniamysis Hendrickx et Tchindonova, 2020

Figures

Figure 1. Boreomysis (Boreomysis) inopinata sp. nov., holotype, male, 31 mm, AM P.106632. (A) habitus, lateral; (B) head, dorsal; (C) posterior part of body, dorsal;(D) posterior part of telson, dorsal; (E) posterior margin of abdomen, lateral; (F) posteriormargin of abdomen and proximal part of uropod (left side), ventral; (G) eye cornea, frontal; (H) antennular peduncle, medial; (I) male process of antennula, posterior; (J) antennal peduncle and scale, posterior; (K) distal part of antennal scale; (L) distolateral spine of antennal scale; (M) antennal peduncle, lateral; (N) uropod, ventral. Scales (mm):A, B = 10.0; C, E, F, N = 1.0; D, H, I, K, L (same scale as for K) = 0.5; G, J, M = 0.25.

Figure 4. Boreomysis (Boreomysis) sibogae. (A, D–G, I–K) female,31 mm, Tasmania,AMP.101174;(B) subadult male, New South Wales, AM P.106643; (C) juvenile, New South Wales,AM P.106640; (H) subadult male, New South Wales,AM P.106642. (A) head, lateral; (B) rostrum and eyes, lateral; (C) rostrum and eyes, lateral; (D) head, dorsal; (E) posterior margin of abdomen, lateral; (F) posterior margin of abdomen and telson (lateral spiniform setae not shown), dorsal; (G) posterior part of telson; (H) telson; (I) antennal scale; (J) uropodal endopod, ventral; (K) uropodal exopod (most of setae not shown); (L) pereopod 1 endopod, posterior. Scales (mm): 1.0.

Figure 5. Boreomysis (Boreomysis) sphaerops. (A–F, H–N) subadult female, New South Wales, AM P.106636; (G) subadult male, New South Wales,AM P.106637. (A) head, dorsal (antennal scale spine missing); (B) head, lateral; (C) posterior part of abdomen with telson and uropods (setae not shown), dorsal;(D) posterior margin of abdomen,lateral;(E) posterior part of telson;(F) antennal scale (distolateral spine missing); (G) distal part of antennal scale; (H) labrum,ventral;(I) mandibular palp, posterior;(J) left mandible, ventral; (K) right mandible, dorsal; (L) pars centralis of right mandible; (M) maxilla 1, posterior; (N) maxilla 2, posterior. Scales (mm):A–K, M, N = 1.0; L = 0.25.

Figure 13. Neobirsteiniamysis inermis. (A–D, F) female, 49 mm, Great Australian Bight, AM P.102493; (E) subadult female, Bass Strait, AM P.106627. (A) head, lateral; (B) posterior part of body, dorsal; (C) posterior margin of abdomen, lateral; (D) posterior margin of abdomen, ventral; (E) telson; (F) uropods, ventral. Scale (mm): 1.0.