Irolita westraliensis

LAST & GLEDHILL, 2008


Western round skate
Classification: Elasmobranchii Rajiformes Arhynchobatidae

Reference of the original description
LAST, P.R. & GLEDHILL, D.C. (2008)
A new species of round skate, Irolita westraliensis sp. nov. (Rajoidei: Arhynchobatidae), from northern Western Australia. CSIRO Marine and Atmospheric Research Paper, 21: 173–181

Image of the original description

Irolita westraliensis sp. nov., adult male holotype (CSIRO H 3243–01, 348 mm TL, fresh): A, dorsal surface; B, ventral surface. In: LAST, P.R. & GLEDHILL, D.C. 2008 A new species of round skate, Irolita westraliensis sp. nov. (Rajoidei: Arhynchobatidae), from northern Western Australia. CSIRO Marine and Atmospheric Research Paper, 21: 173-181

Types
Irolita westraliensis
Holotype: CSIRO: H 3243-01; Paratype: CSIRO: H 1503-01; CSIRO: CA 4217; CSIRO: CA 4216; CSIRO: CA 2801; CSIRO: CA 2800; CSIRO: H 5189-01; CSIRO: H 4069-01; CSIRO: CA 3793; WAM: P 26193-004;


Description :


Citation: Irolita westraliensis LAST & GLEDHILL, 2008: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 11/2018

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Irolita westraliensis sp. nov., female paratype (CSIRO H 4069–01, 430 mm TL), dorsal surface. In: LAST, P.R. & GLEDHILL, D.C. 2008 A new species of round skate, Irolita westraliensis sp. nov. (Rajoidei: Arhynchobatidae), from northern Western Australia. CSIRO Marine and Atmospheric Research Paper, 21: 173-181
Common names
eng Western round skate

Short Description
Original diagnosis after LAST & GLEDHILL, 2008 [3317]: A small Irolita with the following combination of characters: bluish spots on dorsal surface of disc not in dense aggregations; dark bands usually visible on tail; orbital thorns absent; snout to cloacal distance usually slightly shorter than tail; tail relatively narrow and thin in cross-section; caudal fin relatively long; posterior extremity of second dorsal fin well short of tail tip; distance from second dorsal-fin origin to tail tip exceeding 3.5 times width of mid-tail; minimum width of nasal curtain usually more than 2.5 times width of adjacent lobe; trunk centra 35–39; pectoral radials 87–94.

Distribution
Eastern Indian Ocean: Australia. Source: www.gbif.org

Size / Weight / Age
43.0 cm TL (male/unsexed; [3317])

Habitat
demersal; marine; depth range 142 - 209 m [3317]

Remarks
63976