Ctenocheles Kishinouye 1926

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.