Zeuxo Templeton 1840

Key to Australian species of Zeuxo (including subantarctic species)

1. Four or five uropod articles in mature individuals.....................................................................................2

- Six or seven uropod articles in mature individuals..................................................................................... 4

2. Four uropod articles in mature individuals..................................................................................................3

- Five uropod articles in mature individuals....................................................... Zeuxo nannioggae Bamber

3. Antennule basal article less than 3.5 times as long as wide, fourth article of antenna less than twice as long as wide...................................................................................................................... Zeuxo mooneyi n. sp.

- Antennule basal article more than 3.5 times as long as wide, fourth article of antenna more than 2.5 times as long as wide.............................................................................................................................................. .............. Zeuxo phytalensis Sieg (subantarctic species known from Heard Island, Edgar & Burton 2000)

4. Strongly digitate anterior bulge on coxa of pereopod 1, sexes similar, inhabits gastropod shells................ ............................................................................................................................................ Zeuxo shepherdi

- Anterior bulge on coxa of pereopod 1 either slightly indented or rounded, sexually dimorphic................5

5. Lacinia mobilis of left mandible well developed and tooth-like, lacinia mobilis of right mandible peg-like.................................................................................................................................................................... 6

- Lacinia mobilis of left mandible peg-like, lacinia mobilis of right mandible reduced to thorn or absent.. 7

6. Pleopod with five setae on outer margin of basal article; three projecting setae on coxa of pereopod 1; one aesthetasc on female antennule................................................................................. Zeuxo angua Bamber

- Pleopod with six setae on outer margin of basal article; four projecting setae on coxa of pereopod 1; two or three aesthetascs on female antennule ........................................................ Zeuxo normani (Richardson)

7. Pleopod with single seta on inner margin of endopod; lacinia mobilis of right mandible absent...............8

- Pleopod with three to six setae on inner margin of endopod; lacinia mobilis of right mandible thorn-like.....................................................................................................................................................................9

8. Dorsal surface with dark stripes near posterior margin of pereonites .............................. Zeuxo russi n. sp.

- Dorsal surface with dark scattered patches of pigment.................................................... Zeuxo belli n. sp.

9. Pleopod basal article with six setae on outer margin, endopod with three setae on inner margin................ .................................................................................................................................... Zeuxo kirkmani n. sp.

- Pleopod basal article with nine setae on outer margin, endopod with five or six setae on inner margin...... ................................................................................................................................ Zeuxo odohertyae n. sp.