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Bythocypris praerenis Brandão, 2008
Nomenclature
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Family: BythocyprididaeGenus: Bythocypris
SUMMARY
Carapace very large, sub-reniform, maximum height anterior to mid-length, posterior angle obtuse. Lateral surface smooth. RV with anterodorsal margin straight, ventral margin concave. LV outline less sinuous, more evenly rounded, with arched dorsal margin. Calcified inner lamella wide; zone of concrescence fairly narrow, with numerous straight, short radial pore canals. Radial pore canals simple, with or without rim. Three anterior plus one posterior adductor muscle scars. In dorsal view, carapace elongate, maximum width at mid-length.
Antennula robust, with short and thick podomeres, with not very long setae; suture between podomeres II and II incomplete. AII robust, with short and thick podomeres; exopodite with 1 short and 2 long setae; podomere VI with 1 anterodorsal, very short seta, 1 long claw, 1 medium-sized posterodorsal fused claw, and 2 medium-sized posterodistal setae. Base of mandibula with 1 anterodorsal seta, masticatory process with 1 dorsal, bifurcate tooth, 4 trifurcate teeth, plus several short setae; exopodite with 1 very long and 2 long feathered setae; podomere IV of palp with 4 medium-sized setae and 3 medium-sized claws. Vibratory plate of maxillula with 7 strahlen and around 25 setae; palp with 3 long, dorsal, setae 2 long, ventral setae and 1 distal, medium-sized, finely feathered claw. fifth limb robust, with short and thick podomeres; vibratory plate with 4 strahlen and 9 or 10 feathered setae. Furca with 3 to 6 tiny proximal setae, and 3 medium-sized feathered distal seta. One short seta between furca‘s rods. Genital lobe ovate-subtriangular, with scoop-shaped process attached to coiled tube.