Corresponding author: Ivana Karanovic (
Academic editor: Saskia Brix
Yoo H, Thi VAL, Karanovic I (2020) Two Paradoxostomatidae (Ostracoda) species from South Korea with a key to genera of the family. ZooKeys 943: 21–39.
The family
According to the World
Although South Korean cytheroids are poorly studied in general (see
Here we report on two
Both
Beside the description and redescription of two
Samples were collected by scientific scuba diving (
Abbreviations used in text and figures:
All other appendages same as in male.
Male, dissected on one slide (NIBRIV0000813440) and shell on micropalaeontological slide; Female, dissected on one slide and shell was broken; two males dissected on one slide each, shell broken; one female dissected on one slide, shell broken; one juvenile dissected on one slide; shell on micropalaeontological slide and 12 specimens kept in 2 ml vial in alcohol.
South Korea, Gyeongsangnam-do, Goseong-gun, Donghae-myeon, Dongdong beach;
Other appendages same as in female.
1 |
|
|
– |
|
|
2 |
|
|
– |
|
|
3 | Terminal claw on |
|
– | Terminal claw on |
|
4 |
|
|
– |
|
|
5 | Terminal segment of |
|
– | Terminal segment of |
|
6 | Terminal segment of |
|
– | Terminal segment with one claw |
|
7 | Hinge lophodont |
|
– | Hinge adont |
|
8 | Carapace with a postero-ventral spinula |
|
– | No postero-ventral spinula present |
|
9 |
|
|
– |
|
|
10 | Hinge adont |
|
– | Hinge lophodont |
|
11 | Posterior end of carapace with extension situated slightly above middle, anterior margin cuneiform |
|
– | Both anterior and posterior margins rounded |
|
12 |
|
|
– |
|
|
13 | Terminal segment of |
|
– | If present, seta is tiny |
|
14 | First endite on the |
|
– | First endite on the |
|
15 | Anterior margin of the carapace cuneiform, and antero-ventral surface flattened |
|
– | Anterior margin of the carapace rounded and antero-ventral surface not flattened |
|
16 | Carapace with sieve-pores present |
|
– | No sieve-pores present |
|
17 | Terminal segment of |
|
– | Terminal segment of |
|
18 |
|
|
– |
|
|
19 | L5 with claw-like postero-distal seta, and |
|
– | L5 with seta-like postero-distal seta, |
|
1 | Carapace with sieve-pores present |
|
– | Carapace without sieve-pores |
|
2 | Terminal segment of |
|
– | Terminal segment of |
|
3 | L5 with claw-like postero-distal seta |
|
– | L5 with seta-like postero-distal seta |
|
4 |
|
|
– |
|
|
5 | Terminal segment of L7 beside a claw carrying one additional seta (clearly visible) |
|
– | Terminal segment of L7 carrying only one claw |
|
6 |
|
|
– |
|
|
7 | Dorsal margin of the carapace highly arched |
|
– | Carapace more elliptical in lateral view |
|
8 | Fourth and 5th |
|
– | Fourth and 5th |
|
With the addition of
The second species reported here,
The following three genera currently included in the family
This study was supported by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIBR201902204). This work was also supported by two National Research Foundation of Korea (NRF) grants 2016R1D1A1B01009806 and BK21 Plus 22A20130012352. We are grateful to Prof. Wonchoel Lee and Dr. Raehyuk Jeong for collecting the material of the new species and kindly passing it to us. The sample collection was a part of the project titled ‘Improvement of management strategies on marine disturbing and harmful organisms’ funded by the Ministry of Oceans and Fisheries, Korea.