New Australian Species of Ampeliscidae (Crustacea: Amphipoda) from the Great Barrier Reef and Eastern Australia with a Key to Australian Species Author Poore, Gary C. B. Museums Victoria, GPO Box 666, Melbourne VIC 3001, Australia Author Lowry, James K. Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney NSW 2010, Australia (deceased 4 November 2021) text Records of the Australian Museum 2023 Rec. Aust. Mus. 2023-12-06 75 4 519 533 http://dx.doi.org/10.3853/j.2201-4349.75.2023.1890 journal article 293316 10.3853/j.2201-4349.75.2023.1890 5601d427-083c-4543-af69-74b4b13f51d7 2201-4349 10413670 8580D095-3E88-4FB5-B2D6-5DA6755BB16A Ampelisca mingela sp. nov. urn:lsid:zoobank.org:act: 6EC8E9AB-00A8-40A0-AE4E-0FF1D562224A Figs 4 , 5 Holotype : AM P.85992 (with 4 microslides), female, tl. = 9.0 mm. Australia , Queensland , Lizard Island , between Mangrove Beach and South Island , 14°41'S 145°28'E , 30 Sep 1978 . Paratypes : AM P.105871, 2 specimens , Lizard Island lagoon, 14°40'S 145°27'E , plankton tow, J. M. Leis , 24 Jul 1979 ; AM P.105863, 1 specimen , Lizard Island , Blue Lagoon , 500 m east of Palfrey Island , 14°40'S 145°28'E , A . R . Jones & C. J. Short , 9 Oct 1978 ; AM P.105864, 1 specimen , Lizard Island , Blue Lagoon , 500 m east of Palfrey Island , 14°40'S 145°28'E , A . R . Jones & C. J. Short , 9 Oct 1978 ; AM P.105866, 4 specimens , Lizard Island , fringing reef between Bird Islet and South Island , 14°41'S 145°27'E , J. K. Lowry , 7 Oct 1978 ; AM P.105868, 2 specimens , Lizard Island , fringing reef between Bird Islet and South Island , grass beds, 14°40'S 145°28'E , P. C. Terrill , 9 Oct 1978 ; AM P.105862, 2 specimens , Lizard Island , halfway between Mangrove Beach and South Island , 14°40'S 145°28'E , A . R . Jones & C. J. Short , 30 Sep 1978 ; AM P.105865, 1 specimen , Lizard Island , mid-channel between Bird Islet and Trawler Beach , 14°40'S 145°28'E , A . R . Jones , 12 Oct 1978 ; AM P.105867, 1 specimen , Lizard Island , off southern point of Mermaid Cove , 14°41'S 145°28'E , C. J. Short & P. C. Terrill , 8 Oct 1978 ; AM P.105869, 3 specimens , Lizard Island , reefs at western end of Blue Lagoon , 14°40'S 145°28'E , P. C. Terrill , 5 Oct 1978 ; AM P.105870, 1 specimen , near Lizard Island , 1.6 km south-west of Eagle Island , 14°38'S 145°22'E , air lift, J. K. Lowry , 17 Oct 1978 ; NMV J2164 , 6 individuals, Australia , Queensland , Lizard Island , Blue Lagoon , 10 m , 30 Oct 1978 . AM P.105872, 4 specimens , Heron Island , bommie west of harbour entrance, 23°26'S 151°55'E , J. K. Lowry , 7 Dec 1978 . Figure 4 . Ampelisca mingela sp. nov. , holotype, female, 9.0 mm, AM P.85992. Figure 5 . Ampelisca mingela sp. nov. , holotype, female, 9.0 mm, AM P.85992. Description of holotype . Head. Head 1.5 times as long as deep; anteroventral margin oblique-horizontal; eyes present, with 2 pairs with minute cuticular lenses. Antenna 1 peduncular article 2 1.5 times length of article 1; flagellum almost reaching end of peduncle of antenna 2. Mandible palp article 2 tapering distally. Pereon. Coxae 1–3 with small posteroventral hooks on coxae 1 and 2. Gnathopod 1 coxa anterior margin straight, anteroventral corner not produced. Pereopod 3 merus with 2 distal setae on extensor margin, with 6 distal setae on flexor margin; carpus with 3 setae on flexor margin; propodus with 7 setae on extensor margin; dactylus twice as long as propodus. Pereopod 4 merus 2.3 times as long as wide, with setose margins; dactylus twice as long as propodus. Pereopod 7 basis posterodistal margin reaching half ischium length, convex, oblique, distal margin densely setose; ischium longer than merus; merus anterior lobe slightly produced along anterior margin of carpus; carpus short (about as long as broad), carpus anterior lobe overlapping one-quarter length of propodus; propodus inflated; dactylus lanceolate. Pleon. Epimeron 2 posteroventral margin broadly convex. Epimeron 3 ventral margin convex, posteroventral corner with sharp triangular tooth under shallow notch. Urosomite 1 with distally upturned carina. Urosomites 2–3 dorsal margin concave. Uropod 1 reaching beyond base of uropod 2 rami. Uropod 2 inner ramus upper margin with 7 short robust setae, lower margin with 2 short robust setae; outer ramus with 1 long subterminal robust seta, upper margin with 4 short robust setae, outer margin with 6 short robust setae. Uropod 3 inner ramus broadly lanceolate, upper margin with 1 seta, lower margin with distal setae; outer ramus 4 times as long as wide, distal upper margin with 8 setae. Telson 1.6 times as long as wide, deeply cleft (70%), lateral margins evenly convex, with sublateral ridge bearing few setae; with pair of posterior prominent triangular teeth separated from lateral margins by deep notches bearing 2 pairs of subapical setae. Distribution . Australia , Queensland (Lizard Island, Heron Island), lagoon, to 10 m . Remarks . The telson, arrangement of the two pairs of cuticular lenses, pereopod 7 and relative lengths of the antennae of Ampelisca mingela sp. nov. resemble those of A. dingaal King, 2009 also from Lizard Island. The posterior margin of epimeron 3 of A. mingela is convex (straight in A. dingaal ), article 2 of the mandibular palp is three times as long as wide (five times), antenna reaches most of the way along article 5 of antenna 2 (less than halfway) and the telson is 1.6 times as long as wide (2.0 times).