Bull. not. Hist. Mus. Lond. (Zool.) 64(2): 1 1 1-205 —Issued 26 November 1998 



1 TIICNATLffi frt 



Partial revision of Paracyclops Claus, 1893 

 (Copepoda, Cyclopoida, Cyclopidae) with PRES ented 

 descriptions of four new species 



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SUPHAN KARAYTUG_ / 



Department of Zoology. The "Natural History Museum, Cromwell Road. London SW7 5BD, UK & School of 

 Biological Sciences, Queen Mary and Westfield College, Mile End Road, London El 4NS, UK 



GEOFFREY A. BOXSHALL 



Department of Zoology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK 



CONTENTS 



Introduction 1 1 1 



Materials and Methods 1 1 1 



Paracyclops affinis (G.O. Sars, 1863) 1 13 



Paracyclops poppei (Rehberg, 1880) 120 



Paracyclops oligarthrus (G.O. Sars, 1909) 128 



Paracyclops canadensis (Willey. 1934) 136 



Paracyclops dilatatus Lindberg. 1952 142 



Paracyclops hardingi nom. nov 145 



Paracyclops baicalensis Mazepova, 1961 151 



Paracyclops yeatmani Daggett & Davies. 1974 151 



Paracyclops waiariki Lewis, 1974 162 



Paracyclops pilosus Dussart, 1984 169 



Paracyclops careclum Reid. 1987 172 



Paracyclops novenarius Reid, 1987 176 



Paracyclops smileyi Strayer, 1988 176 



Paracyclops reidae sp. nov 184 



Paracyclops bromeliacola sp. nov 189 



Paracyclops punctatus sp. nov 195 



Paracyclops rot hat sp. nov 200 



Acknowledgements 200 



References 204 



SYNOPSIS. A partial revision of the genus Paracyclops is made based on type material and on collections from numerous 

 localities around the world. The following Paracyclops species are redescribed: P. affinis (G.O. Sars, 1863), P. poppei (Rehberg, 

 1880), P. oligarthrus (G.O. Sars, 1909), P. canadensis (Willey, 1934), P. dilatatus Lindberg, 1952, P. hardingi nomen novum, P. 

 baicalensis Mazepova. 1961, P. yeatmani Daggett & Davis, 1974, P. waiariki Lewis, 1974, P. pilosus Dussart, 1984, P. carectum 

 Reid, 1 987. P. novenarius Reid, 1 987 and P.smileyi Strayer. 1988. Four species are described as new to science: P. reidae sp. nov., 

 P. rochai sp. nov., P. punctatus sp. nov., and P. bromeliacola sp. nov. 



Detailed descriptions of these species are given including several previously overlooked microcharacters, such as the 

 ornamentation of the coxobasis of antenna, the cuticular ornamentation of urosomal somites and the posterior spinular 

 ornamentation of the swimming legs, that are shown to have significant taxonomic value at species level. The detailed description 

 of males is revealed to be important in differentiating between closely related species. 



The geographical distributions of the species are re-evaluated on the basis of examined material and verifiable published 

 records. It is revealed that P. affinis does not occur in North America and all previous records of P. affinis in North America refer 

 to the newly discovered P. canadensis. 



INTRODUCTION 



have been recorded in all types of freshwater habitats (Karaytug, 

 1 998): R dilatatus Lindberg, 1952 was found in the Dniester estuary 



(Ukraine) on the Black Sea (Monchenko, 1977), P. baicalensis 

 The genus Paracyclops Claus, 1893 is one of nine genera currently Mazepova, 1961 was collected from great depths in Lake Baikal 

 recognised as constituting the sub- family Eucyclopinae (Dussart & (Mazepova, 1978), and P. bromeliacola sp. nov. and P. reidae sp. 

 Defaye, 1985; Pospisil & Stoch, 1997). All species are known to be nov. inhabit pools in the leaf axils of terrestrial Bromeliads. P. 

 benthic although they can sometimes occur in the water column in chiltoni (Thomson, 1882) was recently collected from freshwater 

 the littoral zone. Paracyclops species are distributed worldwide and bodies on Easter Island and is the only freshwater copepod on this 



©The Natural History Museum, 1998 



