Paramesochridae, Lang, 1944

Back, Jinwook & Lee, Wonchoel, 2012, Two new species of Apodopsyllus (Copepoda, Harpacticoida) from Jeju Island, Korea, Zootaxa 3368 (1), pp. 128-145 : 143

Key to genera of Paramesochridae (amended from Boxshall & Halsey 2004)

1. P1 exopod 3-segmented, apophysis on the male P3 endopod................................... Remanea Klie, 1929

— P1 exopod 1- or 2-segmented............................................................................ 2

2. P3 endopod 3-segmented ... (Diarthrodellinae Huys, 1987)..................................................... 3

— P3 endopod 1- or 2-segmented ... (Paramesochrinae Lang, 1944)................................................ 5

3. A2 exopod 3-segmented; endopod of P2 3-segmented....................................... Tisbisoma Bozic, 1964

— A2 exopod at most 2-segmented; endopod of P2 2-segmented.................................................. 4

4. Distal endopodal segment of P3 with 3 setae............................................ Rossopsyllus Soyer, 1975

— Distal endopodal segment of P3 with 4 setae............................................. Diarthrodella Klie, 1949

5. P2 and P3 endopods 2-segmented................................................. Paramesochra T. Scott, 1892

— P2 and P3 endopods 1-segmented at most.................................................................. 6

6. P1 endopod absent....................................................... Meiopsyllus Cottarelli & Forniz, 1995

— P1 endopod present................................................................................... 7

7. A2 exopod 1-segmented; P2 and P4 endopods 1-segmented.................................................... 8

— These characters not combined......................................................................... 10

8. P1 endopod represent by unarmed lobe..................................................... Kunzia Wells, 1967

— P1 endopod 2-segmented.............................................................................. 9

9. Distal segment of P2 and P3 exopod with 2 setae................. Wellsopsyllus Kunz, 1981 * & Scottopsyllus Kunz, 1962

— Distal segment of P2 and P3 exopod with 3–4 setae....................................... Emertonia Wilson, 1932

10. Body dorsoventrally compressed, P4 exopod 1-segmented................................. Caligopsyllus Kunz, 1975

— Body cylindrical, P4 exopod 2- or 3-segmented at least...................................................... 11

11. P4 endopod absent or represent by 1 seta............................................... Apodopsyllus Kunz, 1962

— P4 endopod present................................................................................... 12

12. P4 exopod 2-segmented................................................................. Biuncus Huys, 1996

— P4 exopod 3-segmented......................................................... Leptopsyllus T. Scott, 1894 **