A New Species of Spinileberis (Crustacea: Ostracoda: Cytheroidea) from the Philippines

Abstract

Species of the genus Spinileberis (Crustacea: Ostracoda: Podocopida: Cytheridae) have been recorded frequently from brackish waters around the North Pacific Ocean and as fossils from sedimentary deposits of and after the Neogene of East Asia. A new species of this genus, S.endoi, is herein described from the Philippines. In having a thick and ragged carapace and merodont hingement, the new species substantially differs from the type species of the genus, S.quadriaculeata (Brady, 1880), but the morphology of the soft parts (appendages) places S.endoi in this genus. Morphologically, the new species is most similar to S.costata Hu, 1977 and S.marginocarinalis Hu, 1981. It represents the southernmost record so far known for this genus in the northwestern Pacific.