Untitled - Alaska Resources Library

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Urotrygon aspidura (Jordan & Gilbert, 1882). Panamic Stingray or Spinytail Round Ray. To 50 cm (19.7 in)
TL (Amezcua Linares 1986), 23 cm (9.2 in) disc width (Robertson and Allen 2002). Bahia Magdalena,
southern Baja California (De La Cruz-Agüero et al. 1994) to Paita, Peru (Chirichigno and Vélez 1998);
not yet collected in Gulf of California (Robertson and Allen 2002). At depths of 5–100 m (16–328 ft)
(min.: Allen and Robertson 1994; max.: Amezcua Linares 1996).
Urotrygon chilensis (Günther, 1872). Blotched Stingray or Chilean Round Ray. To 41.9 cm (16.5 in) TL
(McEachran in Fischer et al. 1995), 26 cm (10.4 in) disc width (Robertson and Allen 2002). Bahia
Magdalena, southern Baja California (De La Cruz-Agüero et al. 1994) to Chile (Chirichigno and Vélez
1998), including Gulf of California (McEachran in Fischer et al. 1995). At depths of 1–60 m (3–197 ft)
(min.: SIO 71-224; max.: Robertson and Allen 2002)).
Urotrygon munda Gill, 1863. Spiny Round Ray or Spiny Stingray. To 28.8 cm (11.3 in) TL (McEachran
in Fischer et al. 1995). Bahia Magdalena, southern Baja California (De La Cruz-Agüero et al. 1994)
and Gulf of California (Miyake and McEachran 1986) to Callao, Peru (Chirichigno and Vélez 1998).
At depths of 4–51 m (13–167 ft) (min.: LACM 50817; max.: Amezcua Linares 1996). Recently also as
Urotrygon asterias.
Urotrygon rogersi (Jordan & Starks, 1895). Thorny Stingray. To 46.2 cm (18.2 in) TL (Robertson and Allen
2002), disc width 28 cm (11.2 in; Robertson and Allen 2002). Bahia San Juanico, southern Baja California
(Fitch 1953) to Ecuador (De La Cruz-Agüero et al. 1997), including Gulf of California (McEachran in
Fischer et al. 1995). At depths of 2–30 m (7–98 ft) (min.: Castro-Aguirre et al. 1999; max.: SIO 65-163).
Family Gymnuridae — Butterfly Rays
Gymnura marmorata (Cooper, 1864). California Butterfly Ray. To 122 cm (48.8 in) disc width (Ebert 2003),
possibly to 150 cm (60 in) disc width (Eschmeyer and Herald 1983). Point Conception, California (Miller
and Lea 1972) to Paita, Peru (Chirichigno and Vélez 1998), including Gulf of California (McEachran in
Fischer et al. 1995). Surf zone to 94 m (308 ft) (min.: Carlisle et al. 1960; max.: Amezcua Linares 1996).
Family Myliobatidae — Eagle Rays
Aetobatus narinari (Euphrasen, 1790). Spotted Eagle Ray. To 3.6 m (11.8 ft) disc width (Amezcua Linares
1996), reportedly to 4 m (13.2 ft; Compagno 1986). Circumglobal; Bahia Almejas, southern Baja
California (D. A. Ebert, pers. comm. to M. L.) to Los Organos, Peru (Chirichigno and Vélez 1998),
including Islas Galápagos (Grove and Lavenberg 1997) and Gulf of California (Galván-Magaña et al.
1996). Shallow bays and estuaries (Amezcua Linares 1996) to 80 m (262 ft) or more (Myers 1999). The
northern California reference (Grove and Lavenberg 1997) appears to be an error.
Myliobatis californica Gill, 1865. Bat Ray. To 1.8 m (6 ft) disc width (Eschmeyer and Herald 1983). Yaquina
Bay, Oregon (Ebert 2003) to Gulf of California (Eschmeyer and Herald 1983), including Islas Galápagos
(Grove and Lavenberg 1997). Intertidal and to 108 m (354 ft) (min.: Eschmeyer and Herald 1983; max.:
Morris et al. 1996).
Myliobatis longirostris Applegate & Fitch, 1964. Longnose Eagle Ray or Snouted Eagle Ray. To 95 cm (37.4 in)
disc width (McEachran and Notarbartolo-di-Sciara in Fischer et al. 1995). Bahia de Sebastian Vizcaino,
central Baja California (Castro-Aguirre and Espinosa Peréz 1996) to Gulf of California (McEachran
and Notarbartolo-di-Sciara in Fischer et al. 1995) and to Sechura, Peru (Chirichigno and Vélez 1998).
Inshore and to depth of 50 m (164 ft; Robertson and Allen 2002).
Pteromylaeus asperrimus (Gilbert, 1898). Rough Eagle Ray or Striped Eagle Ray. To at least 79 cm (31.1 in) disc
width (Grove and Lavenberg 1997). Captured at widely separated sites including Bahia Almejas, southern
Baja California (Fitch 1953), Gulf of Panama (Grove and Lavenberg 1997), and Islas Galápagos (Grove and
Lavenberg 1997). Near shore to a maximum depth of 50 m (164 ft; Robertson and Allen 2002).