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

publication ID

http://doi.org/10.11646/zootaxa.4066.4.1

publication LSID

lsid:zoobank.org:pub:B0F56A57-C033-48C6-BB66-B007A93FC259

persistent identifier

http://treatment.plazi.org/id/038C2831-6503-A10E-94B3-F89CE4BEA84C

treatment provided by

Plazi

scientific name

Eulimnadia
status

 

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 1.25 x diameter of cercopod................................. 2

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

2 Cercopod setae vary markedly in length, 0.5 to 1.25 x 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 5 th and 6 th spine........................... E. contraria  sp. nov.

- <18 telsonic spines, caudal filaments inserted anterior to 4 th 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 4 s, 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 2 nd and 3 rd telsonic spine................................................... 10

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

10 Telsonic spines with a space after 2 nd, 3 rd or 4 th 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 2.5 x cercopod diameter; 20 trunk segments............................ E. dahli Sars 

- <17 cercopod setae, all shorter than 2.5 x 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 1.5 x cercopod diameter; 9 antennomeres...................................... 14

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

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