Cleantioides, Kensley and Kaufman, 1978

Song, Ji-Hun & Min, Gi-Sik, 2016, First record of the Cleantioides rotundata (Malacostraca: Isopoda: Holognathidae) from South Korea, Journal of Species Research 5 (3), pp. 309-312 : 312

Key to the Korean species of the genus Cleantioides

1. The posterior plane of pleotelson has a median tubercle ····························· C. japonica ( Richardson, 1912)

- The posterior plane of pleotelson unarmed (no tubercle) ············································································ 2

2. Posterior margin of pleotelson with emarginated apex ··························· C. emarginata Kwon and Kim, 1992

- Posterior margin of pleotelson with rounded apex ···· 3

3. Body almost 4 times longer than greatest width; coxal plates visible dorsally on pereonites 2­7; suture of maxillipedal palp between 2 and 3 is partial ··············· ··································· C. poorei Kwon and Kim, 1992

- Body almost 5.1 times longer than greatest width; coxal plates visible dorsally on pereonites 5­7; suture of maxillipedal palp between 2 and 3 is complete ··· 4

4. Pleotelson length almost 1.3 times as long as width, dorsum of distal half with slightly bilobed depression ··································· C. planicauda (Benedict, 1899)

- Pleotelson length almost 1.6 times as long as width, dorsum of distal one third with deeply bilobed depression ····························· C. rotundata ( Kussakin, 1982)