Urogymnus acanthobothrium


Mumburarr Whipray
Classification: Elasmobranchii Myliobatiformes Dasyatidae

Reference of the original description
LAST, P.R. & WHITE, W.T. & KYNE, P.M. (2016)
Urogymnus acanthobothrium sp. nov., a new euryhaline whipray (Myliobatiformes: Dasyatidae) from Australia and Papua New Guinea. Zootaxa, 4147 (2): 162–176

Urogymnus acanthobothrium
Holotype: WAM: P.34488-001;

Images of types

Description :

Citation: Urogymnus acanthobothrium LAST, WHITE & KYNE, 2016: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 02/2019

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Urogymnus acanthobothrium sp. nov., juvenile male holotype (WAM P.34488-001, 672 mm DW) © LAST, WHITE & KYNE, 2016
Common names
eng Mumburarr Whipray

Short Description
Original diagnosis after LAST, WHITE & KYNE, 2016 [24344]: A species of Urogymnus distinguished by a combination of the following characters: disc elongate suboval, snout tip to axis of maximum width 53% DW; anterior disc margin not truncated, almost str

Gulf of Papua, Papua New Guinea, and northern Australia (Fig. 8), in brackish reaches of tidal rivers and estuaries, and marine waters [24344]

Size / Weight / Age
adult female max. 1740 mm DL, a late embryo ~265 mm DW, Juveniles (n=5) measured 390–672 mm DW, 430–720 mm DL [24344]

demersal; freshwater; brackish; marine [24344]

Teeth small, broadly subtriangular to rhomboidal, in quincunx; similar in size in upper and lower jaws; surfaces of crowns strongly crenulate. Tooth rows in upper jaw ~40, in lower jaw >40, difficult to count without further dissection [24344]

shark-references Species-ID=14667;