Untitled - Alaska Resources Library

Raja velezi Chirichigno, 1973. Rasptail Skate. To 83 cm (32.7 in) TL (Robertson and Allen 2002). Bahia
Almejas, southern Baja California (J. Bizarro, pers. comm. to M. L.) to west and southwest Gulf of
California to Peru, Islas Galápagos, and Malpelo (Robertson and Allen 2002). Minimum depth no
deeper than 20 m (66 ft) and most probably 10 m (33 ft) or less (J. Bizarro, pers. comm. to M. L.) to 300
m (984 ft; Robertson and Allen 2002).
Order Myliobatiformes
Family Dasyatidae — Whiptail Stingrays
Dasyatis dipterura (Jordan & Gilbert, 1880). Bullseye Stingray, Diamond Stingray, Shorttail Stingray, or
Whiptail Stingray. To 200 cm (78.7 in) TL (Grove and Lavenberg 1997) and at least 88 cm (34.6 in)
disc width, possibly to 120 cm (47.2 in) disc width (Ebert 2003). Central California to northern Chile
and Islas Galápagos (Grove and Lavenberg 1997), including Gulf of California (McEachran in Fischer
et al. 1995). Surf zone to 70 m (230 ft) (min.: Carlisle et al. 1960; max.: De La Cruz-Agüero et al. 1997).
Dasyatis dipterura was treated as a junior synonym of Dasyatis brevis (Garman, 1880) by Nishida and
Nakaya (1990). However, dipterurus (published about 18 May 1880) has priority over brevis (Oct. 1880)
and thus D. dipterura is the correct name (Eschmeyer 1998).
Dasyatis longa (Garman, 1880). Longtail Stingray. To 257 cm (101 in) TL, 180 cm (72 in) disc width
(W. Smith, pers. comm. to M. L.). Bahia San Juanico, southern Baja California (Fitch 1953) to Ecuador
and probably to northern Peru (Chirichigno and Vélez 1998) and Islas Galápagos (Grove and Lavenberg
1997), including lowermost Gulf of California (McEachran in Fischer et al. 1995). Shallow waters to
100 m (328 ft; Amezcua Linares 1996).
Pteroplatytrygon violacea (Bonaparte, 1832). Pelagic Stingray. To 163 cm (64.2 in) TL (Eschmeyer and
Herald 1983), 80 cm (32 in) disc width (Collette and Klein-MacPhee 2002) and possibly to 96 cm
(37.8 in) disc width (Ebert 2003). Circumglobal; in the western Pacific as far north as the southern Kuril
Islands (Savinykh 1998); British Columbia (Peden and Jamieson 1988) to Baja California and to central
Chile (Ebert 2003) and Islas Galápagos (Eschmeyer and Herald 1983). Surface to 238 m (780 ft) over
deep water (min.: J. O’Sullivan, pers. comm. to M. L.; max.: Eschmeyer and Herald 1983). Until recently,
in genus Dasyatis; moved to Pteroplatytrygon by McEachran and Fechhelm (1998).
Family Urolophidae — Round Stingrays
Urobatis concentricus Osburn & Nichols, 1916. Bullseye Stingray, Reef Stingray, Reticulated Round Ray, or
Spot-on-Spot Round Ray. To 47.5 cm (18.7 in) TL (McEachran in Fischer et al. 1995), 28.3 cm (11.3 in)
disc width (Robertson and Allen 2002). Isla Cedros (M. L., unpubl. data) and, off mainland, Rocas
Chester (27°53'N, 115°04'W), central Baja California (M. L., unpubl. data) to Bahia Huatulco, Oaxaca,
southern Mexico (Amezcua Linares 1996). At 1–109 m (4–358 ft) (min.: SIO 68-177; max.: SIO 84-78).
Perhaps a synonym of Urobatis halleri (Thomson et al. 2000). Recently as Urolophus concentricus.
Urobatis halleri (Cooper, 1863). Round Ray or Round Stingray. To 56 cm (22 in) TL (Eschmeyer and Herald
1983), 31 cm (12.1 in) disc width (McEachran in Fischer et al. 1995). Humboldt Bay, northern California
(Miller and Lea 1972) to Ecuador (Béarez 1996), including Gulf of California (McEachran in Fischer et
al. 1995). Shallow, at depths of 0.9–21 m (3–70 ft; Eschmeyer and Herald 1983), but reported to at least
91 m (298 ft; Ebert 2003). Recently as Urolophus halleri.
Urobatis maculatus Garman, 1913. Cortez Stingray or Spotted Round Ray. To 42 cm (16.5 in) TL, 26 cm
(10.2 in) disc width (McEachran in Fischer et al. 1995). Lagunas Ojo de Liebre-Guerrero Negro, central
Baja California (De La Cruz-Agüero et al. 1996) and Gulf of California (McEachran in Fischer et al.
1995). At depths of 1–30 m (3–98 ft; Robertson and Allen 2002). Recently as Urolophus maculatus.
Perhaps a synonym of Urobatis halleri (Thomson et al. 2000).
13