Eudorellopsis dentata Mühlenhardt-Siegel, 2025Holotype.South Atlantic Ocean • ovig. ♀; Argentine Basin; DIVA III exped. FS Meteor; stat. M 79 / 1-533; 36°0.20'S, 49°01.96'W [- 36.00333, - 49.03267; - 36.00450, - 49.03533]; 4602 [4601.8–4605.7] m depth; 15 July 2009; Pedro Martínez Arbizu leg.; epibenthic sledge; ZMH -K-064947.Paratypes.* • ovig. ♀; Argentine Basin, DIVA III exped., FS Meteor stat. M 79 / 1-532; 35°59.16'S, 49°0.75'W [- 35.986, - 49.0125; - 35.98733, - 49.01483]; 4605 [4604.5–4605.4] m depth; 15 July 2009; Pedro Martínez Arbizu leg.; epibenthic sledge; dissected; ZMH -K-064948. * • ♂; same data as holotype; ZMH -K-064949. * • 1 m. + juv. ♂ + ovig. ♀; same data as ZMH -K-064948; ZMH -K-064975. * • 11 m. + subA. ♂ + 7 prep. ♀♀ + 3 ovig. ♀♀; same data as holotype; ZMH -K-064976. * • 9 m. + 4 ♂♂ + 6 prep. ♀♀ + 2 ovig. ♀♀; Argentine Basin; DIVA III exped. FS Meteor; stat. M 79 / 1-534; 36°0.61'S, 49°01.54'W [- 36.01017, - 49.02567; - 36.01150, - 49.02900]; 4608 [4607.8–4605.1] m depth; 16 July 2009; Pedro Martínez Arbizu leg.; epibenthic sledge; 2 males dried out; ZMH -K-064977.Diagnosis.Carapace with 9 teeth on dorsomedian line, the anteriormost largest; laterally a serrate ridge running from anterior part to at least hind quarter of the carapace; some females can carry not only one but 2 weak lateral folds with teeth. Uropod, endopod subequal in length to exopod (after Mühlenhardt-Siegel 2025).Distribution.Southwest Atlantic, Argentine Basin, 4602–4608 m depth.