Lutriwita, Lowry & Myers, 2012

Lowry, J. K. & Myers, A. A., 2012, New, mainly southern hemisphere, freshwater families of Amphipoda (Crustacea), together with a description of the first freshwater calliopiid, Lutriwita bradburyi gen. nov. et sp. nov., Zootaxa 3499, pp. 27-45 : 39

Lutriwita gen. nov.

Diagnostic description. Antennae calceoli present. Antenna 1 slightly longer than antenna 2. Antenna 1 accessory flagellum absent; flagellum, aesthetascs inconspicuous. Mandible molar triturative. Labium inner lobes absent. Maxilla 1 inner plate setose along inner margin; palp article 1 shorter than article 2; palps alike. Maxilla 2 inner plate as broad as outer; inner plate with oblique setal row. Maxilliped outer plate not bulbous, palp article 4 reduced. Gnathopod 1 similar in size and form to gnathopod 2. Gnathopod 1 subchelate; carpus longer than propodus, without posterior lobe. Gnathopod 2 carpus subequal in length to propodus, without posterior lobe; carpus/propodus subrectangular. Pereopods 3–7 prehensile simple. Pereopods 3–7 dactyli smooth. Pereopods 3–7 dactyli not bifid. Pereopod 5 coxa, posterior lobe deeper than anterior lobe. Pleonites 1–2 without dorsal spines. Epimeron 3 posterior margin smooth, posteroventral corner not produced, minutely notched. Urosomites 1–2 dorsal spines absent. Urosomite 1 with distoventral robust seta. Uropods 1–2 rami with marginal robust setae. Uropod 2 inner ramus longer than outer ramus. Uropod 3 rami margins with sparse robust setae; inner ramus subequal to outer ramus. Telson broader than long, emarginate.

Etymology. Lutriwita , an aboriginal name for Tasmania.

Remarks. Lutriwita closely resembles the Antarctic marine genus Lopyastis Thurston, 1974 . Lopyastis apparently does not have calceoli (present in Lutriwita ) and has a longer telson (broad in Lutriwita ) that is deeply notched (emarginate in Lutriwita ).