A morphological review of the jellyfish genus Nausithoe Kölliker, 1853 (Nausithoideae, Coronatae, Scyphozoa, Cnidaria) Author Molinari, Clarissa G. Departamento de Zoologia, Instituto Biociências, Universidade de São Paulo, Rua do Matão, travessa 14, n. 101, Cidade Universitária, São Paulo, SP, 05508 - 090, Brazil & School of Environment and Science, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia Author Collins, Allen G. National Systematics Laboratory, Office of Science and Technology, NOAA National Marine Fisheries Service, MRC- 153, Washington, DC 20013 - 7012, USA & Department of Invertebrate Zoology, Smithsonian National Museum of Natural History, MRC- 163, Washington, DC 20013 - 7012, USA Author Morandini, André C. Departamento de Zoologia, Instituto Biociências, Universidade de São Paulo, Rua do Matão, travessa 14, n. 101, Cidade Universitária, São Paulo, SP, 05508 - 090, Brazil & Centro de Biologia Marinha, Universidade de São Paulo, Rodovia Manuel Hypólito do Rego km 131.5, São Sebastião, SP, 11612 - 109, Brazil text Zootaxa 2023 2023-08-21 5336 1 1 32 http://dx.doi.org/10.11646/zootaxa.5336.1.1 journal article 10.11646/zootaxa.5336.1.1 1175-5326 8268440 98F89833-1EBB-41A6-B943-2091F2296D40 Nausithoe thieli Jarms, 1990 ( Fig. 16 : C–D) Nausithoe thieli Jarms, 1990: 17–21 , figs 8–11, pl. IV. Holotype ZMH C11532 . Material examined: None. Diagnosis: ephyra—transparent with 4 small buds of gastric filaments; polyp—solitary with 2, 4 and 8 cusps per whorl. Description: Based on original description. Polyp solitary; 19.58 mm in total length; 2, 4 and 8 cusps per whorl (number increases from base to aperture of tube) and maximum of 7 whorls; smooth cusps; 0.5 mm in diameter at basal disc; 0.08 mm in diameter above the basal disc; 30–40 tentacles; 20 ephyrae per strobilation. Newly released ephyra transparent; 2 mm diameter; 0.7 mm of this the central disc; rhopalia with statocyst and ocelli; 4 small buds of gastric filaments. Adult medusa unknown. Type locality: Central Red Sea ( 763m depth ) . Distribution: Only known from type locality. Remarks: Cultivation of ephyrae into mature medusae not yet successful.