Revision of the Penaeid Shrimp Genus Penaeopsis (Crustacea: Decapod A)
REVISION OF THE PENAEID SHRIMP GENUS PENAEOPSIS (CRUSTACEA: DECAPOD A) ISABEL PEREZ FARFANTE1 ABSTRACT The genus Penaeopsis, comprising six species, is defined and its relationships discussed. Five of the species occur in the Indo-West Pacific, P. balssi, P. eduardoi, P. challengeri, P. jerryi, and P. rectacuta, and one, P. serrata, on both sides of the Atlantic. A key for their identification is provided. References, disposition of types, locality records, diagnoses, descriptions, and illustrations for each species are presented. The descriptions, except that of P. balssi, are based on material that includes type- specimens. The male of P. challengeri, which was not previously known, is described in detail. Intraspecific variation is noted, and distinguishing morphological features as well as affinities are discussed. In addition, geographic and bathymetric ranges are presented, and a graph of depth- temperature relationships of P. serrata in four areas within its range is included. A study of the types of the three species of and insular slopes of tropical, subtropical, and cer- Penaeopsis described by Bate (1881) made tain temperate regions of the world. All species obvious not only the need for redescriptions of have been found in the Indo-West Pacific, except these specimens, as was pointed out first by Bur- P. serrata, which is restricted to the Atlantic, kenroad (1934a) and most recently by Ivanov and where it is present on both the eastern and west- Hassan (1976), but also confirmed the necessity for ern slopes. These shrimps are frequent and often a revision of the genus. As stated by Perez Far- abundant components of the catches made be- fante (1977b), misidentifications, incomplete de- tween 250 and 600 m, and two of the species are scriptions, and lack of detail in some of the illus- commercially exploited.
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