Peramphithoe

Kim, Young-Hyo, Hong, Soon-Sang, Conlan, Kathleen E. & Lee, Kyung-Sook, 2012, The genus Peramphithoe Conlan & Bousfield, 1982 from Korean waters (Crustacea: Amphipoda: Ampithoidae), Zootaxa 3400, pp. 1-19 : 18-19

Key to Korean species of Peramphithoe

1. Body small, less than 15 mm at maturity; male gnathopod 2, dactylus reaching or not extending beyond proximal end of propodus................................................................................................. 2

- Body large, more than 15 mm at maturity; male gnathopod 2, dactylus elongate, extending far beyond proximal end of propo-

dus............................................................................... P. eoa (Brüggen, 1907) 2. Gnathopod 1, propodus moderately stout, more than 0.4 times as wide as long..................................... 3

- Gnathopod 1, propodus slender, less than 0.4 times as wide as long.......................... P. orientalis (Dana, 1853)

3. Gnathopod 1, propodus longer than carpus; male pereopods 5–7 meri and carpi ordinary............................. 4

- Gnathopod 1, propodus subequal to carpus; male pereopods 5–7 meri and carpi swollen............. P. chujaensis sp. nov.

4. Pereopod 5, merus subequal to carpus; male gnathopod 2 propodus straight ventrally; female gnathopod 2, propodus palm transverse............................................................................................ 5

- Pereopod 5, merus longer than carpus; male gnathopod 2, propodus concave ventrally; female gnathopod 2, propodus palm oblique................................................................ P. baegryeongensis Kim & Kim, 1988

5. Male gnathopod 2, propodus with 1 ventral process distally in the palm; pereopods 6–7 carpi and propodi densely setose....................................................................................... P. tea ( Barnard, 1965)

- Male gnathopod 2, propodus with 2 ventral processes distally in the palm; pereopods 6–7 carpi and propodi weakly setose............................................................................ P. namhaensis Kim & Kim, 1988