Hansenomysis sorbei n. sp., a new suprabenthic mysid (Crustacea: Mysida: Petalophthalmidae) from the Bellingshausen Sea (Southern Ocean) Author Vicente, Carlos San text Zootaxa 2009 2240 31 40 journal article 10.5281/zenodo.190521 fedf9836-3941-4c98-98d4-2429a56ae7a0 1175-5326 190521 Key to species of Hansenomysis from the Southern Ocean Adapted from O . Tattersall (1961) , Bacescu (1971) , Bravo & Murano (1997) and San Vicente & Sorbe (2008) . 1.a. Acute rostrum on the carapace anterior margin ........................................ H. anaramosae San Vicente & Sorbe, 2008 1.b. Without rostrum on the carapace anterior margin ........................................................................................................ 2 2.a. Antennal scale with spines all along its outer margin .................................................. H. falklandica Tattersall, 1955 2.b. Antennal scale without spines on the distal part of its outer margin ........................................................................... 3 3.a. Postero-dorsal part of abdominal somites 3–6 produced into strong spines ......................................... H. sorbei n. sp. 3.b. Postero-dorsal part of abdominal somites 3–6 not produced into strong spines .......................................................... 4 4.a. Carapace with acute antero-lateral processes ............................................................ H. angusticauda Tattersall, 1961 4.b. Carapace with rounded antero-lateral angles ....................................................... H. antarctica Holt & Tattersall, 1906