Ctenocheles Kishinouye, 1926

Kou, Qi, Poore, Gary C. B. & Li, Xinzheng, 2024, A new species of Ctenocheles Kishinouye, 1926 (Decapoda, Axiidea, Ctenochelidae) from China, Zootaxa 5529 (2), pp. 381-395 : 383

Key to species of Ctenocheles Kishinouye, 1926 (modified from Matsuzawa & Hayashi 1997)

1. Rostrum armed dorsally with 8–10 minute teeth............................................................. 2

- Rostrum entirely unarmed.............................................................................. 3

2. Maxillipeds 2 and 3 each without exopod............................................. C. balssi Kishinouye, 1926

- Maxillipeds 2 and 3 each with short exopod................................... C. serrifrons Le Loeuff & Intes, 1974

3. Suborbital angle of carapace sharply pointed. Pereopod 1 merus and ischium with distinct spines on lower margin...................................................................................... C. holthuisi Rodrigues, 1978

- Suborbital angle of carapace not pointed. Pereopod 1 merus and ischium without spines on lower margin............... 4

4. Rostrum overreaching midlength of eyestalk. Major cheliped with fingers less than twice as long as palm............... 5

- Rostrum not reaching midlength of eyestalk. Major cheliped with fingers twice as long as palm....................... 6

5. Rostrum overreaching tip of eyestalk. Maxilliped 3 merus with subdistal tooth on inner margin. Major cheliped with fingers less than 1.5 times as long as palm; ischium serrated on lower margin............................... C. collini Ward, 1945

- Rostrum not reaching tip of eyestalk. Maxilliped 3 merus without subdistal tooth on inner margin. Major cheliped with fingers 1.8 times as long as palm; ischium smooth on lower margin................................ C. leviceps Rabalais, 1979

6. Uropodal endopod oblong, slender, about 3 times as long as wide.......................... C. maorianus Powell, 1949

- Uropodal endopod oval, about 1.5 times as long as wide...................................................... 7

7. Uropodal exopod with distal margin entire.......................................... C. plantei ( Burukovsky, 2005)

- Uropodal exopod with distal margin divided by a notch......................................... C. sinicus sp. nov.