On the Mysid Crustacean Genus Heteromysis (Mysidae: Heteromysinae) of the Tasman Sea, with Notes on the Tribe Heteromysini Author Daneliya, Mikhail E. text Records of the Australian Museum 2021 Rec. Aust. Mus. 2021-05-19 73 1 1 50 http://dx.doi.org/10.3853/j.2201-4349.73.2021.1737 journal article 10.3853/j.2201-4349.73.2021.1737 2201-4349 5412605 1BD21A8F-7A38-4273-ABE1-EC9DAD4CC73E Key to the Tasman Sea species of the microps -group 1 Telson with lateral spiniform setae only in posterior part ( Figs 1C , 9C , 13C ). Uropodal endopod with medial spiniform setae set distantly apart from each other ( Figs 1D , 9E , 13E ) ............................................................. 2 —— Telson with lateral spiniform setae along entire or nearly entire margins ( Fig. 5C ). Uropodal endopod with spiniform setae set close to each other ( Fig. 5E ) ................................................................... H . (H.) keablei sp. nov. 2 Telson cleft spinules along entire cleft length ( Figs 1C , 13C ). Pereopod 1 carpopropodus, segment 1 with bifurcated distomedial spiniform setae ( Figs 2F,G , 14H,J ) ................................................................................ 3 —— Telson cleft spinules only in anterior part (0.1−0.7 of cleft length) ( Fig. 9C,D ). Pereopod 1 carpopropodus, segment 1 with normal, non-bifurcated distomedial spiniform setae ( Fig. 10G ) ....................................................................................................... H . (H.) macropsis 3 Telson with rather deep cleft, about 0.3 of telson length ( Fig. 1C ). Telson lateral margins with six to eleven spiniform setae. Eyes with distomedial rim ( Fig. 1A,B ). Pereopod 3−6 unguis rather short and thick ( Fig. 3 A−C). Uropodal endopod with two to five proximal spiniform setae ( Fig. 1D ) ..................................................... H . (H.) communis —— Telson with rather shallow cleft, about 0.14−0.15 of telson length ( Fig. 13C ). Telson lateral margins with 13 to 20 spiniform setae. Eyes without distomedial rim ( Fig. 13B ). Pereopod 3−6 unguis rather long and thin ( Fig. 15C,D ). Uropodal endopod with 8 to 16 spiniform setae along almost entire length ( Fig. 13E ) .................................................................................. H . (H.) tasmanica