reticulata, were recorded from the Korean fauna (Shin and Rho, 1996 Shin, 2010 Shin and Ubagan, 2015a 2015b). He also revived some name of Henricia species such as Henricia spongiosa. Species of the family have a cosmopolitan distribution. Henricia complex based mainly on morphological differences in the structure of the dorВ sal spines was further divided into species by Madsen (1987). Luidia is a genus of starfish in the family Luidiidae (Sladen, 1889) in which it is the only genus.

(2010) observВ ed that an extension of the study of small brooding speВ cies of the Henricia to the far northern and northwestern Pacific is still needed. It has been suggested that more taxonomic works in these species should be done especially in the North Pacific so that the disagreements of the literature in the past will be resolved (Lambert, 2000). In the work of DвЂ™yakonov (1950), he observed a great number of deviations and individuals of the intermediate form. Every different species has a unique species identifier and the more closely a species is related to it on the evolutionary tree. Clark (1996) formally designated and made some revisions of FisherвЂ™s Henricia species in order to differentiate it from another subspecies. The modern taxonomic class ification system has eight main levels (from most inclusive to most exclusive): Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species Identifier. Fisher (1911) observed that the species within the Henricia probably undergo the hybridization process, and that his work with this genus and species classification had to be considered temporary. The animal kingdom is the largest with approximately 1 million. But it is estimated that 8.7 million species can exist on the planet. Biologists have identified approximately 1.3 million species on Earth. Long and slender arms as well as short arms occur in the same species (DвЂ™yakonov, 1950). Then, it goes down the chain of taxonomic classification into an order, class, phylum, kingdom, and domain. Identification of the related species with similar morphological characteristics is not an easy task for the taxonomist. Edged sea stars, order Phanerozonia, have distinct marginal plates and therefore. Fisher, 1911 Mortensen, 1927 DвЂ™yakonov, 1950 Clark and Downey, 1992), who described the morphology of the species difВ ferently. Sea stars belong to three orders: Phanerozonia, Spinulosa, and Forcipulata. Abstract: Identification of the specimens at the species level in genus Henricia Gray, 1840 has been reported to be difВ ficult and complex by many authors (i.e.

Sea star order family genus