Candonopsis (Candonopsis)

Karanovic, Ivana & Lee, Wonchoel, 2012, A review of candonid ostracods (Crustacea: Ostracoda: Podocopida) from East Asia, with descriptions of five new species from South Korea *, Zootaxa 3368, pp. 7-49 : 40-41

Key to the Candonopsis (Candonopsis) species of the world

1. Posterior UR claw reduced.............................................................................. 2

– Both UR claws developed, and well sclerotized............................................................. 3

2. Posterior UR claw reduced into thin, long seta (more than 1/2 L of anterior claw)........... C. thienemanni Schäfer, 1945

– Posterior claw on the UR reduced into swollen, pappose and short seta (less than ½ L of anterior)................................................................................. C. westaustraliensis Karanovic & Marmonier, 2002

3. Seta “f” missing................................................... C. kimberleyi Karanovic & Marmonier, 2002

– Seta “f” present....................................................................................... 4

4. Anterior claw on UR shorter than ramus................................................................... 5

– Anterior claw on UR clearly longer than ramus........................................... C. urmilae Gupta, 1988

5. Valves strongly asymmetrical: RV overlaps LV with flange dorsally............................................. 6

– RV equally high, or lower than LV........................................................................ 7

6. Claws on UR of subequal L, or anterior claw slightly longer than posterior one (at the most 1.2 times)................................................................................... C. murchisoni Karanovic & Marmonier, 2002

– Anterior claw on UR always markedly longer than posterior one (at least 1.4 times)... C. dani Karanovic & Marmonier, 2002

7. L: W ratio of terminal segment of Md-palp 7:1 or less......................................................... 8

– L: W ratio of terminal segment of Md-palp 9:1......................................... C. anteroacuta Rome, 1962

8. Setae “e” and “f” on L7 extremely short............................................... C. navicula Daday, 1910 a

– Same setae each at least reaching ½ of following segments..................................................... 9

9. Neither of UR claws carries spine....................................................................... 10

– At least one of the UR claws with distinct spine............................................................. 14

10. Carapace subtriangular................................................................................ 11

– Carapace reniform to subreniform, elongated............................................................... 12

11. Anterior and posterior ends of carapace covered with long, stiff, spine-like setae, posterior and anterior UR claws equally long................................................................................. C. trichota Schäfer, 1945

– Anterior and posterior ends of carapace with fine setae, posterior UR claw shorter.. C. mareza Karanovic & Petkovski, 1999

12. L: W ratio of terminal segment of Md-palp less than 4:1...................................................... 13

– L: W ratio of terminal segment of Md palp 5:1 up to 6:1........................ C. kingsleii (Brady & Robertson, 1870)

13. Outer lobe of hemipenis more triangular and pointed...................................... C. boui Danielopol, 1978

– Same lobe more squarish and oblong.................................................. C. scourfieldi Brady, 1910

14. Anterior UR seta missing.............................................................. C. putealis Klie, 1932

– Anterior UR seta present.............................................................................. 15

15. L of carapace between 0.55 mm and 0.65 mm ............................................ C. solitaria Vávra, 1895

– L. of carapace always more than 0.75 mm ................................................................. 16

16. Anterior UR claw with strong spine, while on posterior claw spine sometimes weaker.............................. 17

– Posterior claws always with strong spine, while spine on anterior claw very weak................................. 19

17. All four t-setae in female on A2 developed................................................................ 18

– Just two t-setae present............................................................... C. tenuis (Brady, 1886)

18. L of carapace more than 0.85 mm, L:W ratio of terminal segment of Md-palp 6:1.................. C. africana Klie, 1944

– L of carapace less than 0.7 mm and L:W ratio of terminal segment of Md-palp 7:1...... C. hummelincki Broodbakker, 1983

19. In lateral view, dorsal margin equally rounded, with greatest H around middle.................................... 20

– In lateral view greatest H on the posterior third, from where margin rounded towards posterior end, and inclined towards ante- rior end.............................................................................. C. sumatrana, 1932

20. Seta “h2” of L7 1.5 times longer than “h1”................................................................ 21

– Seta “h2” more man 2.5 times longer than “h1”........................................ C. bujukuensis Löffler, 1968

21. Posterior margin of UR ramus without prominent teeth...................................... C. nama Daday, 1913

– Posterior margin of UR ramus with prominent, thick teeth.................................... C. transgrediens, 1923