New insights into the identities of the elasmobranch fauna of Sri Lanka Author Fernando, Daniel Author Bown, Rosalind M. K. Author Tanna, Akshay Author Gobiraj, Ramajeyam Author Ralicki, Hannah Author Jockusch, Elizabeth L. Author Ebert, David A. Author Jensen, Kirsten Author Caira, Janine N. text Zootaxa 2019 2019-04-12 4585 2 201 238 journal article 27326 10.11646/zootaxa.4585.2.1 86f58653-808d-45ee-bba8-2706327e1afd 1175-5326 2637236 8519C595-0A62-4710-8D38-B200951D7B19 Urogymnus granulatus (Macleay) ( Figs. 2H , 10 D–H) The left portion of the disc of a specimen (SL-13) found in a fish market in Puttalam in the North Western Province was preliminarily identifiable as Urogymnus granulatus based on the coloration of the dorsal surface of the disc which was yellowish brown with small white spots; it also had several irregular rows of enlarged, thorn-like denticles more or less restricted to the midline of the body. While this denticle pattern is inconsistent with that described for this species by Last et al. (2016a , b ), it is consistent with that reported in the redescription of U. granulatus by Ishihara et al. (1993) . This identification was supported by our molecular analysis in which this specimen was found to differ from our reference specimen of U. granulatus (CM03-74; JQ518808 ) from Australia by only a single bp. Our molecular work also confirmed the identity of a specimen, which has been deposited in the BRT Ichthyology Collection (SL-116; BRT-I 0030), collected from the Valaichchenai Fisheries Harbor in the Eastern Province earlier in the year, as U. granulatus . This immature specimen was identical to the reference specimen from Australia and differed from SL-13 by 1 bp. FIGURE 10. Pateobatis jenkinsii ( A–C ) and Urogymnus granulatus ( D–H ) ( Dasyatidae ). A. Dorsal surface of mature female (SL-98). B. Wedge-shaped thorns and denticles on base of tail of mature female (SL-43). C. Dorsal surface of immature male (SL-101; BRT-I 0028). D. Dorsal surface of portion of disc of large specimen (partial; SL-13). E. Thorns and denticles on base of tail of mature specimen (SL-13). F. Ventral surface of portion of disc of large specimen (partial; SL-13). G. Dorsal surface of immature female (SL-116; BRT-I 0030). H. Scapular denticles of immature female (SL-116; BRT-I 0030). This is the first report of U. granulatus from Sri Lanka . This may be the species referred to previously in Sri Lanka as Urogymnus africanus (Bloch & Schneider) by De Silva (1978) or possibly as Urogymnus asperrimus (Bloch & Schneider) (see De Bruin et al. 1995 ; Morón et al. 1998 ; De Silva 2006 ). Last et al . (2016b) suggested that both U. granulatus and U. asperrimus co-occur in Sri Lanka , and a specimen consistent with U. asperrimus collected since our survey confirms this. However, whether the form of this species in Sri Lanka is Urogymnus asperrimus 1 or Urogymnus asperrimus 2 (sensu Naylor et al. 2012a ) remains to be determined.