Hemitrygon izuensis

(NISHIDA & NAKAYA, 1988)


Izu stingray
Classification: Elasmobranchii Myliobatiformes Dasyatidae

Reference of the original description
NISHIDA, K. & NAKAYA, K. (1988)
Dasyatis izuensis, a new stingray from the Izu Peninsula, Japan. Japanese Journal of Ichthyology, 35 (3): 227–235

Image of the original description
Image in copyright.

Synonyms / new combinations and misspellings
Dasyatis izuensis

Types
Hemitrygon izuensis

Dasyatis izuensis
Holotype: HUMZ: 109730; Paratype: HUMZ: 109733; HUMZ: 109732; HUMZ: 109716; HUMZ: 105907; HUMZ: 105476; HUMZ: 109731; HUMZ: 107444;


Description :


Citation: Hemitrygon izuensis (NISHIDA & NAKAYA, 1988): In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 04/2019

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Hemitrygon izuensis (NISHIDA & NAKAYA, 1988); KAUM - I. 5388, mature female, 369.1 mm DW, off Chiringajima Island, Kagoshima Bay, Japan © Hiroyuki Motomura, Kagoshima University Museum, Japan
Common names
eng Izu stingray

Distribution
Northwest Pacific: Izu Peninsula, Pacific coast of Japan. Source: www.gbif.org

Biology
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures [733]. Distinct pairing with embrace [17086].

Size / Weight / Age
41.8 cm WD (male/unsexed; [3754])

Habitat
demersal; marine; depth range 10 - 10 m (Ref. 58018)

Remarks
shark-references Species-ID=14617;

Parasites (arranged by Jürgen Pollerspöck)
Isopoda
  • Gnathia trimaculata COETZEE, SMIT, GRUTTER & DAVIES, 2009 [17188]