Athelginae, Codreanu & Codreanu, 1956

Williams, Jason D. & Boyko, Christopher B., 2015, Abdominal bopyrid parasites (Crustacea: Isopoda: Bopyridae: Athelginae) of diogenid hermit crabs from the western Pacific, with descriptions of a new genus and four new species, Raffles Bulletin of Zoology 64, pp. 33-69 : 34-37

Key to the genera of Athelginae

(Based on females; modified from Boyko & Williams, 2003)

1. Lateral plates present ..............................................................2

– Lateral plates lacking.............................................................. 7

2. Lateral plates on pleomeres I–V............................................. 3

– Lateral plates on pleomeres I–III only..................................... ............................................ Stegias Richardson, 1904 (3 spp.)

3. Lateral plates on pleomere V similar to other lateral plates on other pleomeres....................................................................... 4

– Lateral plates on pleomere V reduced, globular or scarlike.... ....................................... Pseudostegias Shiino, 1933 (8 spp.)

4. Pereopods V and VI separated by wide distance (broad pereomeres) .............................................................................5

– Pereopods V and VI not separated by wide distance (narrow pereomeres) .............................................................................6

5. Pleopods uniramous .................................................................. ................... Minimathelges Boyko & Williams, 2003 (2 spp.)

– Pleopods biramous ............ Anathelges Bonnier, 1900 (4 spp.)

6. Five pleomeres ........................ Claustrathelges n. gen. (1 sp.)

– Six pleomeres............................................................................ .................. Falsanathelges Boyko & Williams, 2003 (2 spp.)

7. Uniramous uropods articulated with terminal pleomere.......... ....................................... Parathelges Bonnier, 1900 (11 spp.)

– Uropods lacking or reduced non-segmented lobes ................8

8. Pleopods on pleomere V present.............................................. ......................... Allathelges Kazmi & Markham, 1999 (2 sp.)

– Pleopods on pleomere V lacking.............................................. ...................................... Athelges Gerstaecker, 1862 (13 spp.)