New gnathiid isopod crustaceans (Cymothoida) from Heron Island and Wistari Reef, southern Great Barrier Reef Author Svavarsson, Jörundur Author Bruce, Niel L. text Zootaxa 2019 2019-05-22 4609 1 31 67 journal article 26729 10.11646/zootaxa.4609.1.2 a349f585-a56b-4aee-b082-58d671a15523 1175-5326 3150433 68F78949-4006-424B-8CA4-432CD2955264 Gnathia wistari Svavarsson and Bruce, 2012 Gnathia wistari Svavarsson & Bruce, 2012 : 26 , figs 18–21. Material examined . 2 ♂ (2.4, 2.5 mm ), Heron Island , Heron–Wistari channel, 23°27.248’S , 151°55.005’E , 25 November 2009 , medium rubble, 29–30 m , CReefs stn HI09-106C, coll. K. Schnabel and S. Smith ( MTQ W34134) . ♂ ( 2.6 mm ), Heron Island , Heron–Wistari channel, 23°27.248’S , 151°55.005’E , 25 November 2009 , medium rubble, 29–30 m , CReefs stn HI09-106B, coll. K. Schnabel and S. Smith ( MTQ W34135) . Remarks . This species has earlier been reported from Heron Island, as well as from the Lizard Island and surroundings ( Svavarsson & Bruce 2012 ). Distribution . Northern and southern Great Barrier Reef; at depths of 8 to 30 m .