Eulimnadia

Brian V Timms, 2016, A partial revision of the Australian Eulimnadia Packard, 1874 (Branchiopoda: Spinicaudata: Limnadiidae), Zootaxa 4066 (4), pp. 351-389 : 386-387

Key to Australian Eulimnadia hermaphrodites

This key needs to be used with caution as not only are there occasional individuals in a collection that are aberrant in some feature, meristic components of some features (e.g. antennomeres) are subject to increased variation when damaged. Generally about 10% variation from average conditions is allowed for in this key.

1 <7 cercopod setae, all short, length ranging from 0.5 to 1.25x diameter of cercopod.................................2

->8 cercopod setae, length usually> 1.5x cercopod diameter.................................................... 6

2 Cercopod setae vary markedly in length, 0.5 to 1.25x diameter of cercopod;>10 antennomeres........................ 3

- Cercopod setae of uniform length, about equal to diameter of cercopod; typically 8 antennomeres, never>9 antennomeres..4

3>16 telsonic spines; usually only 4 cercopod setae; first antenna lobes usually> 7................... E. datsonae Timms

- <14 telsonic spines; usually 5–6 cercopod setae; first antenna lobes usually <5....................... E. feriensis Dakin

4>20 telsonic spines, caudal filaments inserted between 5th and 6th spine........................... E. contraria sp. nov.

- <18 telsonic spines, caudal filaments inserted anterior to 4th spine................................................ 5

5 About 16 telsonic spines and often an anterior auxillary spine; spines similar in size and spacing; 8 antennomeres in flagella.................................................................................... E. australiensis sp. nov.

- About 10 telsonic spines and no anterior auxillary spine, spines unequal in size and spacing; 7 antennomeres in flagella.......................................................................................... E. uluruensis sp. nov.

6 Cercopod basal setae bearing part to distal cirrus <60:40;>11 antennomeres....................................... 7

- Cercopod basal setae bearing part to distal cirrus>70:30; <9 antennomeres, usually 8................................ 9

7>16 telsonic spines; posterior spines vary in size, often in groups of 4s, small to big; first antennae lobes>6.............. 8

- <14 telsonic spines; posterior spines maybe uneven, but not is groups of 4; first antennae lobes <5.... E. centenaria sp. nov.

8 <10 cercopod setae; setae decrease in length posteriorly;>20 telsonic spines........................ E. palustera Timms

->18 cercopod setae; first few setae increase in length posteriorly; <18 telsonic spines............... .. E. vincumula Timms

9 Caudal filaments inserted between 2nd and 3rd telsonic spine................................................... 10

- Caudal filaments inserted beyond 3rd telsonic spine..........................................................11

10 Telsonic spines with a space after 2nd,3rd or 4th spine, total about 12,>6 lobes on first antenna......... E. beverleyae sp. nov.

- Telsonic spines evenly spaced, total about 10, 4 lobes on first antenna........................... E. pinocchionis sp. nov.

11 Cercopod setae>14; 5 or more lobes in first antennae........................................................ 12

- Cercopod setae <12; 4 lobes in first antennae............................................ E. gnammaphila sp. nov.

12>18 cercopod seate, all longer than 2.5x cercopod diameter; 20 trunk segments............................ E. dahli Sars

- <17 cercopod setae, all shorter than 2.5x cercopod diameter; 18 trunk segments.................................. 13

13 Cercopod setae short, length about equal to cercopod diameter; 8 antennomeres in flagella............. E. hansoni sp. nov.

- Cercopod setae usually longer than 1.5x cercopod diameter; 9 antennomeres......................................14

14 Telsonic spines spaced between 4th and 7th spines; cercopod setae all the same length................... E. canalis sp. nov.

- Telsonic spines crowded as usual between 4th and 7th spines; cercopod setae shorter distally........ E. taroomaensis sp. nov.