Zoological Studies

Vol. 59, 2020

(update: 2020.07.07; 08.05)

Special Issue: Fossil and Modern Clam Shrimp (Branchiopoda: Spinicaudata, Laevicaudata)

Diagnosing Eulimnadia and Paralimnadia (Branchiopoda: Spinicaudata: Limnadiidae)

Brian V. Timms1,* and D. Christopher Rogers2


1Honorary Research Associate, Australian Museum, 10 William St, Sydney, 2010 and Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Kensington, NSW 2052, Australia. *Correspondence: E-mail: brian.timms@unsw.edu.au (Timms)
2Kansas Biological Survey, and The Biodiversity Institute, The University of Kansas, Higuchi Hall, 2101 Constant Avenue, Lawrence, KS 66047-3759, USA. E-mail: Branchiopod@gmail.com (Rogers)

(Received 20 January 2020 / Accepted 12 March 2020)
Special issue (articles 32-46) communicated by Thomas A. Hegna and D. Christopher Rogers

Eulimnadia and Paralimnadia are both strongly supported, monophyletic limnadiid lineages based on molecular studies. However, defining the two taxa morphologically relies on the presence/absence of a subcercopodal spiniform projection; otherwise there is considerable overlap and confusion in morphological characters between the two taxa. The most discriminatory of these characters are examined here and applied to Australasian species. As a result, five Eulimnadia species are transferred to Paralimnadia. These characters are then applied to world Eulimnadia species and other limnadiid genera which share key features with Eulimnadia.

Key words: Clam shrimp, Cercopods, Antennomeres, Claspers, Amplexus, Reproductive systems.

Citation: Timms BV, Rogers DC. 2020. Diagnosing Eulimnadia and Paralimnadia (Branchiopoda: Spinicaudata: Limnadiidae). Zool Stud 59:38. doi:10.6620/ZS.2020.59-38.

Supplementary Materials: Appendix 1