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.
Highlights
The marine biodiversity of Korea is very high according to a recent estimation (Costello et al 2010), many small interstitial organisms, including harpacticoid copepods, still remain unknown
A survey of harpacticoid copepods from subtidal zones in Korea resulted in the discovery of two new species belonging to Leptopsyllus (Leptopsyllus)
Since the genus Leptopsyllus was proposed by Scott T (1894) based on the reduction of legs, several species have been described in Leptopsyllus
Summary
The marine biodiversity of Korea is very high according to a recent estimation (Costello et al 2010), many small interstitial organisms, including harpacticoid copepods, still remain unknown. In Kunz’s (1962) revision of the family Paramesochridae, the author proposed nine genera including four new genera, Apodopsyllus, Intermedopsyllus (accepted as Wellsopsyllus (Intermedopsyllus) Huys, 2009), Kliopsyllus Kunz, 1962 (accepted as Emertonia Wilson, 1932), and Scottopsyllus Kunz, 1962 (accepted as Wellsopsyllus (Scottopsyllus) Apostolov & Marinov, 1988), based on the segmentation of the legs. A survey of harpacticoid copepods from subtidal zones in Korea resulted in the discovery of two new species belonging to Leptopsyllus (Leptopsyllus). These two species are described and an updated key to species of the genus is provided
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