Abstract:
This taxonomic study of harpacticoid (Porcellidiidae) was carried out using the
sample collected from the seagrass (Enhalus acoroides) from Sungai Pulai, Johor that
was collected on 31 st August 2007. Samples were prepared on slides for observation
under high magnification compound microscope and details of the fine structure on its
body surface were further examined by using Scanning Electron Micrograph method.
A total of three species was described which is Porcellidium aiiroa, Dilatatiocauda
media/is and Porcellidium sp .. The female Porcellidium aiiroa described by the
unique features of rhomboid caudal rami with the present of 1, 4 and y terminal setae
and for the male the caudal rami is rectangular with the absent or third terminal setae.
The Dilatatiocauda that was found during the study was classified by the unique
features of maxilliped that widely separated at the middle part of two coxal lobes and
the absent of fimbriate process. The location of the a. and setae at the middle of
caudal rami make it's named as D. media/is. Porcellidium sp. found in this study has
unique features of caudal rami with highly bevelled at the outer edge.
