Table 5.

Morphology of adult medusae in previous and the present study. Bars represent a lack of data.

	O. deigo sp. nov.	O. formosus		O. malayensis	O. mulleri		O. sambaquiensis	O. singularis	O. tenuis	Olindias sp. (young medusa)
UD (mm)	62–84	83.2	75	25–35	40–60	22–44	50–100	13–36	35	7
UH (mm)	30–45	42.6	about 1/2 of UD	over 1/2 of UD	–	–	–	half of UD	–	5.5
No. of ET	30–60	84	present	absent	absent	absent	absent	absent	absent	absent
No. of PT	78–141	168	264	20–30	50–60	48–60	80–100	28–86	32–54	12
No. of ST	49–51	57	325	30–40	100–120	96–120	200–300	16–50	38–70	–
No. of MC	168–242	283	–	120	100–170	–	100–200	32 to more than 100	64–69	–
No. of CC (per quadrant)	20–26	19–23	18–23	7–9	11–19	7–11	21–27	4–12	7–10	1
No. of gonads	4	4–6	4–6	4	4	4	4	4	4	4
Gonads	Folded/ along nearly whole length of radial canals	Folded/ along nearly whole length of radial canals	–	Papilliform/ along nearly whole length of radial canals	Linear, swollen, with surfaces covered with branched processes/ over nearly entire length of radial canals	Papilliform/along the radial canals	Folded/ along nearly whole length of radial canals	Papilliform/ outer half of radial canals	Papilliform/ outer half of radial canals	Folded/ upper half of the radial canals
Statocysts	Not examined	Not examined	Twice as many as primary tentacles	Twice as many as primary tentacles	Twice as many as primary tentacles	–	Twice as many as primary tentacles	Single otolith at base of each primary tentacle	Single otolith at base of each tentacle	Two at the base of two centripetal canals
Color	Manubrium light red to orange. Gonads milky-white. Primary tentacles pale black with purple and glowing green tips and black base. Secondary tentacles deep-brown.	Manubrium lilac to red orange. Each corner of base of manubrium smaragdine-green. Gonads egg-yellow. Tips of primary and exumbrellar tentacles transparent, lilac and smaragdine-green. Marginal clubs and base of primary and exumbrella tentacles ivory-black. Radial canals and circular canals deep scarlet. Centripetal canals lighter scarlet.	–	Similar to O. mulleri	Similar to O. tenuis but apparently browner and duller.	Gonads orange	Bright and variable, with mingled yellow, red, brown, and black. Colors similar to O. tenuis.	Entoderm of stomach, gonads, and ring-canal opaque (cream color?).	Entoderm of manubrium, tentacle-bulbs, and gonads opaque yellowish-green, streaked with purple. Exumbrella tentacles white or dark-purple. Marginal tentacles red and yellow.	–
Distribution (Sampling locality)	Ryukyu archipelagos, Okinawa, southern Japan	Oita, Japan	Japan; Korea	Malay Archipelago	Bahamas; Bermudas; Mediterranean Sea; West Africa	Aegean Sea	Brazil; Argentina	Maldive Is.; Low Archipelago; Chagos Archipelago; Philippines; India Australia; Iranian Gulf; Pakistan	Florida; Bahamas; Barmudas; Cuba	Sunda Strait
References	This study	This study	Goto (1903) Kramp (1961) Park (2006)	Maas (1905) Mayer (1910) Kramp (1961)	Mayer (1910) Kramp (1961)	Aytan et al. (2019)	Müller (1861) Mayer (1910) Kramp (1961) Chiaverano et al. (2004)	Browne (1905) Mayer (1910) Kramp (1961)	Fewkes (1883) Maas (1905) Mayer (1910) Kramp (1961)	Uchida (1947)