Austronanus
Creators: name: Just, Jean
name: Wilson, George D. F.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Paramunnidae
Austronanus

description: Key to genera and species of the Austronanus complex
1. Pleotelson tapering, lateral margins smooth ............................... Xigonus patagoniensis
– Pleotelson rounded with denticles on part of or entire lateral margins......................... 2
2. Frontal margin of head evenly convex; pleotelson proximal margins equal length of lateral margins; denticles on rounded lateral corner only Stephenseniellus gen. nov. .. 3
– Frontal margin of head forming rounded or pointed angle; pleotelson proximal mar­
gins distinctly shorter than lateral margins; entire lateral margins denticulate .............. .............................................................................................................. Austronanus ... 4 3. Antenna article 3 lateral margin with acute forward pointing denticles; uropods not covered by cuticular hood ............................... Stephenseniellus serraticornis, sp. nov.
– At least part of lateral margin of antenna article 3 with irregular crenate flange; uropods inserted under cuticular hood.................... Stephenseniellus palliolatipes sp. nov.
4. Antennulae with 5 articles, article 5 elongate ............................................................... 5
– Antennulae with 6 articles, article 5 subequal to 4 and 6.............................................. 6
5. Front margin of head with pointed angular apex, lateral margins evenly convex; coxae V–VII with large lateral projection .............................................. Austronanus dentatus
– Front margin of head with rounded apex, lateral margins convex in middle, concave either side; coxae V–VII non­projecting rings, 7 with lateral spine .............................. ............................................................................... Austronanus aucklandensis sp. nov.
6 Frontal margin of head adjacent to apex evenly convex, not sinuous........................... 7
– Frontal margin of head adjacent to apex concave, sinuous.......................................... 8
7. Coxae V–VII with denticles on lateral margin. Pleotelson laterally rounded................. ......................................................................................................... Austronanus dubius
– Coxae V and VI smooth, VII with single lateral denticle. Pleotelson laterally angular anteriorly, straight sided more posteriorly ......................... Austronanus gelidus sp. nov.
8. Antenna article 3 slightly widening distally, with crenate flange on straight lateral and medial margins; flagellum article 1 as long as 2 and half of 3 combined. Pleotelson posterior projection with row of 4 or 5 denticles either side...... Austronanus glacialis.
– Antenna article 3 inflated midlength, margins curved, with crenate flange on lateral margin; flagellum article 1 as long as 2–4 combined. Pleotelson posterior projection with single proximal denticle either side ....................... Austronanus mawsoni sp. nov.
description: Published as part of Just, Jean & Wilson, George D. F., 2006, Revision of Southern Hemisphere Austronanus Hodgson, 1910, with two new genera and five new species of Paramunnidae (Crustacea: Isopoda: Asellota), pp. 21-58 in Zootaxa 1111 on pages 25-26, DOI: 10.5281/zenodo.171530