Ethusina rowdeni Ahyong, 2008

Ahyong, Shane T. & Farrelly, Caroline A., 2018, First Australian records of Ethusina (Crustacea: Decapoda: Ethusidae) and additional records from New Zealand, Zootaxa 4486 (2), pp. 161-168 : 166

Ethusina rowdeni Ahyong, 2008

Ethusina rowdeni AHYONg, 2008 : 29–31, figS 12B, 13C–D, 14F–L [TYpe lOcaliTY: WHakaTaNe SeamOuNT, BaY Of PleNTY, NeW ZealaNd].— Webber et al. 2010: 226.—YaldWYN & Webber 2011: 230.

Material examined. AUSTRALIA: New South Wales: NMV J72625 , 1 male (cl 11.2 mm, cw 10.0 mm), E of woolgoolga, 30°05.94–07.68'S, 153°34.36–35.76'E, 1194–1257 m, IN2017_ V03 _080 -176, 5 June 2017.

NEw ZEALAND: NIwA 83192, 1 male (cl 10.9 mm, cw 10.1 mm), white Island Canyon , 37°33.018–33.168'S, 177°17.280–16.950'E, 938– 914 m, beam trawl, TAN1206 /148, 28 April 2012 ; NIwA 31725, 1 juvenile male (cl 5.6 mm, cw 4.6 mm), Challenger Plateau , 36°55.2402–55.6908'S, 167°31.608–31.260'E, 1216–1222 m, TAN0707 / 52, 30 May 2007 .

Remarks. Ethusina rowdeni was previously known only by the male holotype from the southern Kermadec Ridge (whakatane Seamount, Bay of Plenty; 1292–1336 m). The present specimens extend the known bathymetric range and the geographic range westwards to southeastern Australia. The Australian specimen (NMV J72625 ) is the largest recorded of the species. The gonopods of the juvenile male (NIwA 31725) are incompletely developed; both are elongated but gonopod 2 is as yet separate from, rather than enclosed by gonopod 1.

Distribution. Northern New Zealand from seamounts in the Bay of Plenty, westwards to the Challenger Plateau; for the first time from eastern Australia; 914–1336 m.