Ameiridae

Karanovic, Tomislav & Cho, Joo-Lae, 2012, Three new ameirid harpacticoids from Korea and first record of Proameira simplex (Crustacea: Copepoda: Ameiridae) *, Zootaxa 3368, pp. 91-127 : 124

Key to species of Korean Ameiridae

1. Antennula eight-segmented.............................................................................. 2

– Antennula six-segmented......................................................... Pseudameira mago sp. nov.

2. First exopodal segment of second to fourth legs without inner seta.............................................. 3

– This segment with inner seta..................................... Proameira cf. simplex ( Norman & Scott T., 1905)

3. Anal operculum with smooth dorsal side; second exopodal segment of first leg without inner seta...................... 4

– Anal operculum with strong spinules dorsally; second exopodal segment of first leg with inner seta.................... 6

4. Inner medial corners of anal somite not produced posteriorly and weekly sclerotised................................ 5

– These corners produced posteriorly and strongly sclerotised.................................. Ameira kimchi sp. nov

5. Caudal rami with smooth inner margin; innermost exopodal seta on male fifth leg minute........... Amira zahaae sp. nov.

– Caudal rami with spinules on inner margin; innermost exopodal seta on male fifth leg well-developed............................................................................... Ameira parvula (Claus, 1866) sensu Chang (2007)

6. Third exopodal segment of fourth leg with seven elements..................................................... 7

– This segment with eight elements.......................................... Nitokra affinis californica Lang, 1965

7. Third endopodal segment of second leg with three inner setae.................................................. 8

– This segment with two inner seae........................................ Nitokra lacustris (Schmankevitch, 1875)

8. First endopodal segment of first leg shorter than first two exopodal segments combined............................. 9

– This segment as long as first two exopodal segments combined.......................... Nitokra spinipes Boeck, 1865

9. All elements on fifth leg baseoendopod in male of same length and strength; female fifth leg exopod less than twice as long as wide................................................................ Nitokra pietschmanni (Chappuis, 1934)

– Innermost element on fifth leg baseoendopod in male much stronger and longer than other two; female fifth leg exopod more than twice as long as wide....................................................... Nitokra koreana Chang, 2007