Zizzygonium, Just, Jean & Wilson, George D. F., 2007

Just, Jean & Wilson, George D. F., 2007, Revision of Austrosignum Hodgson and Munnogonium George & Strömberg (Paramunnidae) with descriptions of eight new genera and two new species, (Crustacea: Isopoda: Asellota), Zootaxa 1515, pp. 1-29 : 25-27

Zizzygonium gen. nov.

Type species. Paramunna magellanensis Winkler, 1994 . —Here designated.

Species included. Zizzygonium magellanensis ( Winkler, 1994) , comb. nov.

Diagnosis. Body ovate. Head front margin concave in middle in dorsal view, broadly rounded laterally. Pereonites dorsally smooth. Pleotelson lateral margins denticulate. Eyestalks robust, apex rounded, slightly longer than wide, with proximal constriction. Antennula article 1 much shorter than eyestalk. Antenna article 3 lateral margin broadly expanded, convex. Mandible palp present. Pereopod I carpus oval, with 2 straight robust setae posteriorly; propodus with 1 robust setae on posterior margin. Pereopod II carpus and propodus posterior margin with a few short robust setae. Uropod endopod straight, apex truncate.

Etymology. The genus name is comprised of an arbitrary combination of letters and the traditional paramunnid ending – gonium.

Distribution. Magellan Channel, Chile. 9– 12 m.

Remarks. Zizzygonium gen. nov. differs from the other genera treated here by the combination of concave front margin of the head, a laterally bulging article 3 of the antenna, the presence of a mandible palp, oval pereopod I carpus, and denticulate pleotelson margins.