Elasmobranchii (sharks and rays) >
Myliobatiformes (Stingrays) >
Urolophidae (Round rays)
Etymology: Spinilophus: Name from Latin spina for spine or thorn and genus Urolophus; referring to the sqamation of the dorsal surface ot this stingaree.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal. Tropical
Western Central Pacific: known only from New Ireland (Bismarck Archipelago). Possibly New Guinea (Ref. 9863).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 17.4 cm TL male/unsexed; (Ref. 51067)
This species is distinguished by the following characters: dorsal disc with a prominent mid-scapular thorn and dermal denticles which are small, spinular, partly embedded and are restricted to the snout, supraorbital, interorbital and mid-lumbar regions and midline of the tail; nasal capsules are oval, relatively broad and short; the ischiopubic bar of pelvic girdle is strongly arched with concave outer anterior margin, short angular prepelvic process and long posterior mesial process (Ref. 113541).
Body shape (shape guide): other; Cross section: flattened.
Maximum length known only from the holotype and only known specimen, a juvenile male (Ref. 51067).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Séret, B. and P. Last, 2003. Description of four new stingarees of the genus Urolophus (Batoidea: Urolophidae) from the Coral Sea, South-West Pacific. Cybium 27(4):307-320. (Ref. 51067)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00372 - 0.01775), b=3.08 (2.88 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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