Bougainvillia Lesson, 1830

Wang, Xuefeng, Lu, Liyi, Zhang, Shenzeng, Lin, Linkun, Xu, Zhenzu, Guo, Donghui & Huang, Jiaqi, 2021, Two new species of hydromedusa (Cnidaria) from the Leizhou Bay, the northern South China Sea, Zoological Systematics 46 (3), pp. 193-199 : 194

Genus Bougainvillia Lesson, 1830

Cyanaea Bougainville Lesson, 1830: 118–119 .

Bougainvillia Lesson, 1836: 262 ; Mayer, 1910: 155; Kramp, 1961: 74; Bouillon et al., 2006: 128–131; Schuchert, 2007: 198; Xu et al., 2014: 203–204; Guo et al., 2018: 99. Type species: Bougainvillia macloviana Lesson, 1830 .

Diagnosis. Medusa with four perradial marginal bulbs bearing two or more identical tentacles, with or without ocelli; four perradial oral tentacles, usually branched and ending in nematocyst clusters; gonads on manubrium, adradial, interradial or rarely perradial.

Remarks. The genus comprises 29 species (Vannucci & Rees, 1961; Bouillon et al., 2006; Schuchert, 2007; Nogueira et al., 2013; Xu et al., 2014), of which 19 species are known in Chinese seas. These species are widely distributed in all China waters, especially in the East China Sea and the South China Sea. A remarkably large number of medusae was found in the Taiwan Strait and the northern South China Sea by Xu et al. (2014).

Bougainvillia is closely related to Nemopsis , but the latter has each of four clusters of marginal tentacles with a median pair of club-shaped or capitate tentacles, which are absent in Bougainvillia .