taxonID	type	description	language	source
EF7D0F56FF99FFC80ABCDFBB0953DA28.taxon	diagnosis	Genus diagnosis. Corynidae have a bell-shaped umbrella with four radial canals, and a ring canal. Tentacle bulbs swollen, each with an abaxial ocellus. Manubrium short, not extending beyond umbrella margin and without thin proximal part. Gonads undivided, and encircle manubrium for nearly its entire length, leaving manubrium visible only at the top and near the mouth. Four tentacles arising from bulbs with a single egg-shaped nematocyst swelling at tips.	en	Toshino, Sho, Hamatsu, Yoshimi, Uchida, Hiroaki (2021): Caltsacoryne setouchiensis (Hydrozoa, Anthoathecata) a new genus and species of hydrozoan jellyfish from Japan. Zootaxa 5032 (1): 87-103, DOI: 10.11646/zootaxa.5032.1.4
EF7D0F56FF99FFC80ABCDFBB0953DA28.taxon	type_taxon	Type species. Caltsacoryne setouchiensis	en	Toshino, Sho, Hamatsu, Yoshimi, Uchida, Hiroaki (2021): Caltsacoryne setouchiensis (Hydrozoa, Anthoathecata) a new genus and species of hydrozoan jellyfish from Japan. Zootaxa 5032 (1): 87-103, DOI: 10.11646/zootaxa.5032.1.4
EF7D0F56FF99FFC80ABCDFBB0953DA28.taxon	etymology	Etymology. The genus name Caltsacoryne is taken from the Greek words “ kaltsa ” and “ koryne, ” meaning “ sock ” and “ club, ” respectively. The gender is feminine. The name reflects the illusion that the medusa appears to be wearing socks on the tentacle tips.	en	Toshino, Sho, Hamatsu, Yoshimi, Uchida, Hiroaki (2021): Caltsacoryne setouchiensis (Hydrozoa, Anthoathecata) a new genus and species of hydrozoan jellyfish from Japan. Zootaxa 5032 (1): 87-103, DOI: 10.11646/zootaxa.5032.1.4
EF7D0F56FF99FFCE0ABCD9A30E4FDF49.taxon	description	Figures 4 – 7	en	Toshino, Sho, Hamatsu, Yoshimi, Uchida, Hiroaki (2021): Caltsacoryne setouchiensis (Hydrozoa, Anthoathecata) a new genus and species of hydrozoan jellyfish from Japan. Zootaxa 5032 (1): 87-103, DOI: 10.11646/zootaxa.5032.1.4
EF7D0F56FF99FFCE0ABCD9A30E4FDF49.taxon	materials_examined	Material examined. Holotype: NSMT-Co 1749. Suo-Oshima, Okikamuro Island, Yamaguchi Prefecture, western Japan, April 24, 2016, collector: Sho Toshino, one adult female medusa. Paratypes. NSMT-Co 1750. Same locality and date as the holotype, collectors: Yoshimi Hamatsu, one adult male. NSMT-Co 1751 – 1753. Same locality as the holotype, April 18, 2018, collector: Hiroaki Uchida, two adult males and one adult female.	en	Toshino, Sho, Hamatsu, Yoshimi, Uchida, Hiroaki (2021): Caltsacoryne setouchiensis (Hydrozoa, Anthoathecata) a new genus and species of hydrozoan jellyfish from Japan. Zootaxa 5032 (1): 87-103, DOI: 10.11646/zootaxa.5032.1.4
EF7D0F56FF99FFCE0ABCD9A30E4FDF49.taxon	description	Description. Mature medusae with transparent, thick but soft bell-shaped umbrella (Fig. 4 A – C, 5 A – C). Umbrella height (UH) and diameter (UD) approximately 7 mm and 4 mm, respectively (Table 4). Umbrella apex thickened, tapered. Exumbrella smooth, nematocyst sparsely scattered. Bell cavity small. Four radial canals and single straight ring canal. Canals narrow, almost with same diameter. Tentacle bulbs swollen, reddish purple in color, each with abaxial ocellus (Fig. 6 A – C). Tentacle arising from bulbs, short and terminating in single large egg-shaped swelling covered with nematocysts (Fig. 6 D, E). Orange band present on middle part of swelling. Mouth simple and circular, whitish in color (Fig. 6 F, G). Manubrium hanging in bell cavity, large and flask-shaped; rounded at apical side and furnished with small proboscis in distal portion. Extended manubrium length approximately 3 mm and approximately half umbrella height (almost full length of subumbrella). Gonads encircling entire surface of manubrium, with exception of apical and distal portions (Fig. 6 D). Velum narrow (Fig. 4 C, 5 C). Smallest young medusa with UH of 2.5 mm and UD of 2.6 mm (Fig. 7 A – C). Umbrella spherical with few exumbrellar nematocysts. Mesoglea on apex of exumbrella thinner than that of adults. Manubrium thin, translucent to whitish, length approximately half that of umbrella. Mouth simple and circular. Gonad immature. Four radial canals and singular circular canal. Velum narrow. Tentacle bulbs swollen, reddish purple, each with dark brown abaxial ocellus. Four tentacles, terminating in single large spherical swelling. Orange band present on middle part of swelling. 2006; d, Huang et al. 2008; e, Forbes 1848; f, Huang et al. 2011; g, Minemizu et al. 2015; h, Torrey 1909. Cnidome. Two different types of nematocyst were identified and measured in the adult medusa (Table 5, Fig. 8), and two sizes of stenoteles (Fig. 8 A, B) and desmonemes (Fig. 8 C, D) were observed on tentacle tips, tentacle bulbs, and manubrium, although small stenoteles were absent from the manubrium. Stenoteles were also found on the bell; however, these could not be measured. Habitat and ecology. The medusae of C. setouchiensis collected in the present study appeared at the water surface in a shallow area (water depth 3 – 5 m) during the daytime around the coast of Suo-Oshima, the Seto Inland Sea, in April. They are not active swimmers but drift with the current using their extended tentacles. The species appears to be neritic. In some specimens, mesoglea at the apical part were found to be infested by flukes (Fig. 6 G, 7 B). Stinging events attributable to C. setouchiensis are currently unknown.	en	Toshino, Sho, Hamatsu, Yoshimi, Uchida, Hiroaki (2021): Caltsacoryne setouchiensis (Hydrozoa, Anthoathecata) a new genus and species of hydrozoan jellyfish from Japan. Zootaxa 5032 (1): 87-103, DOI: 10.11646/zootaxa.5032.1.4
EF7D0F56FF99FFCE0ABCD9A30E4FDF49.taxon	etymology	Etymology. The specific name “ setouchiensis ” refers to the Setouchi Region, which includes the type locality in which the species was found.	en	Toshino, Sho, Hamatsu, Yoshimi, Uchida, Hiroaki (2021): Caltsacoryne setouchiensis (Hydrozoa, Anthoathecata) a new genus and species of hydrozoan jellyfish from Japan. Zootaxa 5032 (1): 87-103, DOI: 10.11646/zootaxa.5032.1.4
EF7D0F56FF99FFCE0ABCD9A30E4FDF49.taxon	diagnosis	Differential diagnosis. A comparison of the key features of Corynidae species is presented in Table 6. Caltsacoryne setouchiensis can be distinguished from the species of other genera by the following combination of morphological characters: number of tentacles, cnidocyst pads, manubrium length, and shape of the gonads and tentacles in adult medusae. All species in the family Corynidae have four radial canals, circular canals, and marginal tentacle bulbs. Caltsacoryne bears four tentacles, whereas species in the genera Polyorchis, Scrippsia, and Spirocodon typically have more than 100. Whereas most corynids have unbranched filiform tentacles, those in Caltsacoryne, Dicyclocoryne, and Slabberia are unbranched capitate, and Cladosarsia and Dipurenella have branched capitate tentacles. Caltsacoryne lacks adaxial cnidocyst pads on the marginal bulbs, whereas these pads are present in Cladosarsia and Dipurenella. Furthermore, unlike species of Cladosarsia, Dipurenella, Sarsia and Slabberia, the manubrium in Caltsacoryne does not extend beyond the umbrella margin, and in contrast to Dipurenella, Slabberia, and some species of Stauridiosarsia, in which the gonads are divided, those in Caltsacoryne are divided	en	Toshino, Sho, Hamatsu, Yoshimi, Uchida, Hiroaki (2021): Caltsacoryne setouchiensis (Hydrozoa, Anthoathecata) a new genus and species of hydrozoan jellyfish from Japan. Zootaxa 5032 (1): 87-103, DOI: 10.11646/zootaxa.5032.1.4
