REDESCRIPTION OF THREE NEW RECORDS OF ISOPODA (CRUSTACEA) ASSOCIATED WITH FOULING COMMUNITIES IN THE EASTERN HARBOUR OF ALEXANDRIA, EGYPT.

REDESCRIPTION OF THREE NEW RECORDS OF ISOPODA
(CRUSTACEA) ASSOCIATED WITH FOULING COMMUNITIES IN
THE EASTERN HARBOUR OF ALEXANDRIA, EGYPT.
BY
SHe E. RAMADAN*; N. M. DOWIDAR; A. N. KHALIL

AND S. M. ELSONBATY

*National Institute of Oceanography and Fisheries, Alexandria, Egypt
key words: Redescription, Synidotia varigata, Paracerceis sculpta,
Ischyromene lacaze;, Isopoda..
ABSTRACT
Through a survey on the isopods associated with the fouling community
growing on the hard substrata (metal and concrete) in the Eastern Harbour of
Alexandria, Egypt (E.H.), eleven isopod species were identified. Ofthese, six
species namely Synidotea variegata Collinge, 1917, Paracerceis sculpta
(Holmes,1904), Ischyromene lacazei Racovitza, 1908, Paradello dianae
(Menzies, 1962), Dynamene edwardsi (Lucas, 1849) and Sphaeroma serratum
(Fabricius, 1787) are considered as new records to the E.H. S. variegata and P.
sculpta are new records to Alexandria region. The occurrence ofI. lacaze; in
the Eastern Mediterranean was confmned by procuring both sexes of the
species and recording its different growth stages from juvenile to mature stages
in the E.H. during the present study. Redescription, habitat and distribution of
S. variegata , P. sculpta and 1. lacazei are given.