Two new species of Leptopsyllus from Korea (Copepoda, Harpacticoida, Paramesochridae)

Abstract

Two new species of Leptopsyllus are described from the subtidal zone of Korea. Both species were assigned to the subgenus Leptopsyllus (Leptopsyllus) T. Scott, 1894, based on following three characters: two-segmented rami of P1, absence of endopod on P2 and P3, and presence of one-segmented endopod of P4. L. (L.) pundius sp. n. is most closely related to L. (L.) punctatus Mielke, 1894, however clearly distinguishable from it based on mandibular exopod with two setae, shape of P6, and caudal seta III ornamented with spinules in the new species. L. (L.) koreanus sp. n. is clearly distinguishable from its congeners by the second segment of P1 endopod armed with one element, male baseoendopod of P5 with one seta, and one segmented endopod of mandibular palp. The world distribution and updated key to the species of the genus Leptopsyllus are provided.

Two new species of the genus Emertonia Wilson, 1932 from Korean waters (Copepoda, Harpacticoida, Paramesochridae)

“…They reported a list including 88 marine and brackish-water harpacticoids belonging to 23 families (Song et al 2012). Especially in the case of the family Paramesochridae, 11 species are found in the coastal sandy sediments (Back and Lee 2014; Back and Lee 2017). As a part of ongoing taxonomical study on the harpacticoid copepods, we aim to describe two new species of Emertonia sampled from sandy beaches in Korean Waters.…”