A new subfamily of ulmarid scyphomedusae, the Santjordiinae, with a description of Santjordia pagesi gen. et sp. nov. (Cnidaria: Scyphozoa: Discomedusae: Semaeostomeae: Ulmaridae) from the Sumisu Caldera, Ogasawara Islands, Japan Author Lindsay, Dhugal John Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa, Japan Author Grossmann, Mary Matilda 0000-0002-6800-6092 Okinawa Institute of Science and Technology (OIST), Onna, Okinawa, Japan & grossmann. mary @ gmail. com; https: // orcid. org / 0000 - 0002 - 6800 - 6092 grossmann.mary@gmail.com Author Montenegro, Javier Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa, Japan Author Morandini, André Carrara Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, trav. 14, n. 101, São Paulo, SP, Brazil, 05508 - 090 & Centro de Biologia Marinha (CEBIMar), Universidade de São Paulo, Rod. Manoel Hipólito do Rego, km 131.5, São Sebastião, SP, Brazil, 11612 - 109 text Zootaxa 2023 2023-11-20 5374 4 533 551 https://mapress.com/zt/article/download/zootaxa.5374.4.5/52305 journal article 279799 10.11646/zootaxa.5374.4.5 574440eb-4c32-41f5-893b-bb6a89dd83db 1175-5326 10159050 3EE99BAD-F9F3-41BA-A069-9F47CB03835E
TABLE 3. Summary of data and diagnostic characters for distinction of the currently recognized families of “ Semaeostomeae ” medusae. Spp. = number of valid species of the family/subfamily, if the literature mentions undescribed or doubtful species the number was put in brackets and followed by a question mark. Tentacles = presence or absence of tentacles and, if present, how they are organized. Gastrovascular cavity = organization of the cavity, with radial septa, radial canals, ring canal and branching of canals. Gonads = organization of gonads: inverted = contained inside the body; everted = parts of the gonads outside the body. Subgenital ostia = present or absent. Rhopalia = number and position of rhopalia; question mark (?) means that the character is not known for the genus or its state is doubtful. Mostly after: Mayer (1910); Kramp (1961); Russell (1970); Larson (1986); Mianzan & Cornelius (1999); Gershwin & Collins (2002); Matsumoto et al. (2003); Raskoff & Matsumoto (2004); Bayha & Dawson (2010); Morandini & Marques (2010); Straehler-Pohl et al. (2011); Jarms & Morandini (2019); Collins et al. (2022). * signifies character not described in original species description but visible in photograph in Jarms & Morandini (2019).
Family/ SubfamilyGeneraSpp.TentaclesRhopailaGastrovascular cavityGonadsSubgenital ostia
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Pelagiidae Gegenbaur, 1856Chrysaora15 (16?)present, 8, 24, 40, or more, marginal8, marginalradial septa, no canals but sometimes with canals on lappetsinverted horse-shoe sometimes protrudingpresent
Mawia1present, 8, marginal8 marginalradial septa, no canalsinverted horse-shoe always protrudingabsent
Pelagia1 (5?)present, 8, marginal8, marginalradial septa, no canalsinverted horse-shoe sometimes protrudingpresent
Sanderia2present, 16, marginal16, marginalradial septa, no canalsinverted horse-shoe always protrudingpresent
Cyaneidae Agassiz, 1862Cyanea10 (17?)present, many, subumbrellar groups8 marginalradial septa, canals on lappetsevertedabsent
Desmonema4present,8 marginalradial septa,evertedabsent
many, subumbrellar groupscanals on lappets
Drymonematidae Haeckel, 1880Drymonema3present, many, subumbrellar zone8 subumbrellarradial septa, canals on lappetsevertedabsent
Phacellophoridae Straehler-Pohl et al., 2011Phacellophora1 (3?)present, many, subumbrellar rows16 marginalunbranched and branched canalsevertedabsent
Ulmaridae Haeckel, 1880present or absentunbranched or branched canals, ring canal on margininverted or evertedpresent or absent
Aureliinae Agassiz, 1862Aurelia26 (more?)present, many, exumbrellar8 marginalbranched canalsinverted, horse-shoepresent
Aurosa1present, many, exumbrellar8 marginalbranched canalsinverted, horse-shoepresent
Poraliinae Larson, 1986Poralia1 (3?)present,>50, marginal16? (12–30) marginalunbranched canals, ring canal away from margininverted, continuous ringabsent
Sthenoniinae Mayer, 1910Sthenonia1present, many, subumbrellar rows8 marginalunbranched and branched canalsevertedabsent
Ulmarinae Kramp, 1961Diplulmaris2present, 16– 48, marginal16 marginalunbranched and branched canalsevertedabsent
Discomedusa2present, 24– 48, marginal8 marginalunbranched and branched canalsevertedabsent
Floresca1present, 24, marginal8 marginalunbranched canalsinverted?, horse-shoeabsent
Parumbrosa1present, 24, marginal8 marginalunbranched and branched canalseverted?absent
Ulmaris2present, 8, marginal8 marginalunbranched and branched canalsevertedabsent
Deepstariinae Larson, 1986Deepstaria2absent8–20 marginalbranched canalson manubrium wallabsent
Stellamedusinae Raskoff & Matsumoto, 2004Stellamedusa1absent8 marginalunbranched canals, ring canal away from margin, centripetal canalsinverted, horse-shoepresent
Stygiomedusinae Russell & Rees, 1960Stygiomedusa1absent20 marginalbranched canalsinverted, horse-shoepresent
Tiburoniinae Matsumoto et al., 2003Tiburonia1absent~20–54+ marginalbranched canalseverted*present
Santjordiinae subfam. nov.Santjordia1present, many, subumbrellar rows8 marginal + 24 subumbrellarunbranched canals, ring canal away from margin?absent