Paracyclopina

Boxshall, Geoff A. & Jaume, Damià, 2012, Three new species of copepods (Copepoda: Calanoida and Cyclopoida) from anchialine habitats in Indonesia, Zootaxa 3150, pp. 36-58 : 44

Key to species of Paracyclopina

Including the new species, Paracyclopina now comprises six species, the largest of which attains a body length of up to 0.73 mm, while the smallest can be as short as 0.43 mm ( Table 1 ). Males are unknown for two of these six species. The females can be separated using the following key:

1. Caudal rami 3.5 to 4.0 times longer than wide............................................................... 2

- Caudal rami 1.0 to 2.0 times longer than wide............................................................... 3

2. Antenna with second and third endopodal segments subequal......................................... P. longifurca

- Antenna with third endopodal segment longer than second............................................ P. orientalis

3. Caudal rami about 2.0 times longer than wide............................................................... 4

- Caudal rami 1.3 times longer than wide...................................................... P. sacklerae n. sp.

4. Body slender, with prosome about 1.2 times longer than urosome......................................... P. nana

- Body with prosome about 1.5 times longer than urosome..................................................... 5

5. Inner apical spine of leg 5 robust, longer than lateral margin spine and outer apical spine................... P. intermedia

- Inner apical spine of leg 5 markedly shorter than both lateral margin spine and outer apical spine............... P. m i n u t a