Paradiastylis, Calman, 1904

Gerken, Sarah, 2014, Eleven New Species and a New Genus of Diastylidae (Crustacea: Cumacea) from Australia and One New Species from Canada, Records of the Australian Museum 66 (1), pp. 1-62 : 49-50

Key to all species of Paradiastylis

1 Telson longer than uropod peduncles ....................................................................... P. capillata

—— Telson shorter than uropod peduncles ....................................................................................... 2

2 Telson more than ½ peduncle length ......................................................................................... 3

—— Telson less than ½ peduncle length ........................................................................................... 5

3 Carapace with ridges ......................................................................... P. occidensaustralis n. sp.

—— Carapace without ridges, covered in fine spines ....................................................................... 4 4 Telson with distinct post-anal region ....................................................................... P. bathyalis

—— Telson tubular, without distinct post-anal region ................................. P. botanybayensis n. sp.

5 Carapace with ridges ................................................................................................................. 7

—— Carapace without ridges ............................................................................................................ 6

6 Carapace with small spines, may be difficult to see ....................................... P. berentsae n. sp.

—— Carapace smooth, without spines ............................................................................... P. whitleyi

7 Carapace with 1 lateral ridge .................................................................................. P. culicoides

—— Carapace with more than 1 lateral ridge .................................................................................... 8

8 Carapace with 4 lateral ridges .............................................................................. P. brachyuran

—— Carapace with 3 lateral ridges ................................................................................................... 9

9 Uropod peduncle much longer than pleonite 6 and telson together .......................................... 10

—— Uropod peduncle shorter than pleonite 6 and telson together ....................................... P. mollis

10 Pereopod 2 carpus shorter than propodus and dactylus together .............................. P. longipes

—— Pereopod 2 carpus as long or longer than propodus and dactylus together ......................................................................................................................... P. belone