Chapter 22 



Crustacea Decapoda (Penaeidea, Stenopodidea, 

 Caridea, and Palinura) of Enewetak Atoll 



DENNIS M. DEVANEV (deceased) and A. J. BRUCEf 



'Bernice P. Bishop Museum, Honolulu. Hawaii 9681 7; 

 f Northern Territorx^ Museum of Arts and Sciences. 

 GPO Box 4646. Darwin. N. T. 5794. Australia 



INTRODUCTION 



Biological surveys made during 1946 and 1947 in the 

 northern Marshall Islands included faunal collections that 

 resulted in a publication by Chace (1955) on several 

 groups of shrimps. In this work, six species of sergestid, 

 pasiphaeid, processid, and alpheid shrimps were recorded 

 from Enewetak. Since then the number of taxa from the 

 atoll has increased until now nearly 150 decapod shrimp 

 and lobster species are recognized. Pontoniines and 

 alpheids account for 73% (106 species) of the total 

 number. There are several new records not only for 

 Enewetak but also for the Marshalls, and in some cases, 

 for the Pacific. A taxonomic checklist (Table 1) and a sec- 

 tion on collection data for new records are provided. 



PENAEIDEA 



Two penaeid species in the genus Metapenaeopsis, one 

 a widely distributed Indo-West Pacific form and the other 

 as yet unidentified, are now recorded for the first time 

 from Enewetak. Among the sicyonid shrimps, the widely 

 distributed Indo-West Pacific species, Sicf^onella mal- 

 diuensis, has been collected at Enewetak on the surface 

 using a light at night. One planktonic sergestid, an undeter- 

 mined species of Lucifer, was reported by Chace (1955) 

 and was collected at Enewetak in the same manner. In 

 1967, Bowman recorded L. chacei as a new species from 

 a number of Indo-West Pacific locations including Enewetak 

 and Rongelap Atolls in the Marshalls. 



TABLE 1 

 Checklist of Enewetak Penaeidea, Stenopodidca, Caridea, and Palinura' 



Subphylum CRUSTACEA 

 Class MALACOSTRACA 

 Order DECAPODA 



Suborder DENDROBRANCHIATA 

 Infraorder PENAEIDEA 

 Superfamily PENAEOIDEA 

 Family PENAEIDAE 



i Metapenaeopsis borradailei (De Man, 1910). 

 't Metapenaeopsis sp. 

 Family SICYONIIDAE 



t Siciionella maldiuensis Borradaile, 1910. 

 Superfamily SERGESTOIDEA 

 Family SERGESTIDAE 



Lucifer chacei Bowman, 1967; Bowman, 1967. 

 Lucifer sp.; Chace, 1955. 



'The higher classification used here follows that of Bowman and Abelc (1982). 

 fNew records for Enewetak. 



(This table continued on next page.) 



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