Urogymnus, J.P.Muller & Henle, 1837

Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, Zootaxa 5027 (2), pp. 211-230 : 223

Genus Urogymnus

Urogymnus granulatus ( Figure 11 ) was reported for the first time from Bangladesh, based on three specimens from one study site. NADH2 sequence analysis from one of the three specimens supported this identification. This confirms that four species of Urogymnus occur in Bangladeshi waters; U. asperrimus , U. granulatus (likely previously misidentified as U. Africana ) ( Hoq et al. 2011; Roy et al. 2015), U. lobistoma and U. polylepis , especially around mangrove areas in the southwestern region. Urogymnus polylepis ( Figure 12 ) has been recorded in news articles but has not yet been added to checklists. Hence, while this is not considered a new record for Bangladesh, it is the first verified record from 52 specimens.

Figures

FIGURE 11. Dorsal image of Urogymnus granulatus from Cox’s Bazar.

FIGURE 12. Dorsal image of Urogymnus polylepis from Cox’s Bazar and caught from Sundarbans (Male, DW= 185.42 cm).