Parasterope, Poulsen, 1965

Chavtur, Vladimir G. & Keyser, Dietmar, 2016, Description of new members of the family Cylindroleberididae (Ostracoda: Cylindroleberidoidea) from the Southern Ocean, Zootaxa 4137 (3), pp. 301-329 : 312-313

Genus PARASTEROPE Poulsen, 1965

Type-species. Asterope muelleri Skogsberg, 1920 .

Composition. Genus Parasterope includes 43 species of which the following are known from the study area: P. quadrata ( Brady, 1898) , P. ohlini ( Skogsberg, 1920) , P. longiseta ( Skogsberg, 1920) , P. pectinata Poulsen, 1965 , P. pseudoquadrata ( Hartmann, 1965) (in Hartmann-Schröder & Hartmann 1965) , P. styx Kornicker, 1975 , P. crinita Kornicker, 1975 , P. prolixa Kornicker, 1975 , P. micrommata Kornicker, 1975 , P. anommata Kornicker, 1975 , P. aff. longiseta (in Hartmann 1987) , P. sequax Kornicker, 1996 (in Kornicker & Poore 1996) , P. lux Kornicker, 1996 (in Kornicker & Poore 1996) , P. p hy s i nx Kornicker, 1996 (in Kornicker & Poore 1996), P. whatleyi Kornicker, 1996 (in Kornicker & Poore 1996) .

Distribution. Members of this genus live between 55°N and 65°S from intertidal depths to 4303 m ( Kornicker & Poore 1996).

1. 6th limb with 6 or 7 upper setae on anterior margin, lateral eyes absent on female............................... P. styx - 6th limb with only 1 upper seta, lateral eyes on female either present or absent..................................... 2 2. Carapace length equal to or greater than 1.95 mm, lateral eyes present on female................................... 3 - Carapace length smaller than 1.85 mm, lateral eyes either present or absent on female............................... 4 3. Lateral eyes developed, 7th limb with 6 terminal setae.................................................. P. ohlini - Lateral eyes minute, 7th limb with 4 terminal setae.................................................... P. sequax 4. Lateral eyes absent on female (male unknown).................................................... P. anommata - Lateral eyes present.................................................................................... 5 5. 7th limb with cone–shaped tip, combs with small teeth................................................ P. whatleyi - 7th limb with usual convex tip, combs with developed teeth.................................................... 6 6. Carapace length greater than 1.55 mm ..................................................................... 7 - Carapace length smaller than 1.45 mm ..................................................................... 9 7. Lateral eyes of female with 3 ommatidia (male unknown)........................................... P. micrommata - Lateral eyes of female with 9 ommatidia..................................................... P. pseudoquadrata - Lateral eyes of female with 16 ommatidia (male unknown)..................................................... 8 8. Posterior infold of shell between list and margin with 15–17 setae, 7th limb with 12 setae.................... P. longiseta - Posterior infold of shell between list and margin with 6 setae, 7th limb with 16–17 setae..............................

........................................................................................ P. aff. longiseta 9. 7th limb with 17 setae, each comb with 12–15 teeth...................................................... P. lux - 7th limb with 10–11 setae, each comb with 10–11 teeth (unknown in P. quadrata )................................. 10 10. Carapace length 1.28 mm, dorsal margin of mandibular basale with long setules and short spines................ P. crinita - Carapace length 1.44 mm, dorsal margin of mandibular basale with short setules and short spines............... P. physinx - Carapace length 1.29–1.38 mm, dorsal margin of mandibular basale without setules and spines....................... 11 11. Distal corner of dorsal margin of 2nd joint of 1st antenna with row of long stout setules, distal seta on dorsal margin on basale

of maxilla absent............................................................................ P. pectinata - Distal corner of dorsal margin of 2nd joint of 1st antenna bare, distal seta on dorsal margin on basale of maxilla almost twice

the length of proximal seta....................................................................... P. prolixa - Distal corner of dorsal margin of 2nd joint of 1st antenna bare, distal seta on dorsal margin on basale of maxilla only slightly

longer than proximal seta....................................................................... P. quadrata